Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Exchanging heat between plural systems, e.g., disparate

Subclass of:

062 - Refrigeration

062056000 - PROCESSES

Patent class list (only not empty are listed)

Deeper subclasses:

Entries
DocumentTitleDate
20130042636HEAT TRANSFER SYSTEM WITH INTEGRATED EVAPORATOR AND CONDENSER - Two phase heat transfer systems including integrated fluid transfer paths for exchange of a working fluid between an evaporator and condenser. Separate fluid transfer paths may be defined for communication of working fluid between the evaporator and condenser, wherein at least one of the fluid transfer paths is integrated with the evaporator and/or condenser. In one embodiment, both first and second fluid transfer paths are integrally provided to establish direct fluid communication between the evaporator and condenser to facilitate flow of vaporized and condensed working fluid respectively.02-21-2013
20130042637MODULAR AIR CONDITIONING SYSTEM WITH HEAT PUMP FUNCTIONALITY - A modular vehicle air-conditioning unit for heating and cooling air includes a housing having at least one blower and a plurality of flaps for setting air flow paths and a refrigerant circuit in fluid communication with the housing. The refrigerant circuit includes a condenser, an evaporator, a compressor, and an expansion device. An evaporator air flow path through the evaporator and a condenser air flow path through the condenser are formed in the housing. At least one of the evaporator air flow path and the condenser air flow path receives air from at least one of an environment, a passenger compartment of a vehicle, and any mixture of thereof.02-21-2013
20100058781REFRIGERANT SYSTEM WITH ECONOMIZER, INTERCOOLER AND MULTI-STAGE COMPRESSOR - A refrigerant system is provided with a multi-stage compression system. An intercooler is positioned between at least two compression stages to cool a refrigerant, by heat transfer interaction with a secondary fluid, after it has been compressed in the lower compression stages to some intermediate pressure. The intercooler enhances refrigerant system performance, improves compressor reliability, and extends operational envelope. Further, at least one economizer circuit is incorporated into the refrigerant system that returns the economized refrigerant flow at the location between at least two compression stages.03-11-2010
20130025301HOT WATER SUPPLY SYSTEM CONTROL APPARATUS AND HOT WATER SUPPLY SYSTEM CONTROL PROGRAM AND HOT WATER SUPPLY SYSTEM OPERATING METHOD - An operating method in a heat pump hot water supply system of an indirect heating method by which an average COP during a water heating period can be improved and a risk of running out of hot water can be prevented from increasing. For a heat pump hot water supply system of the indirect heating method, a change in heat transfer efficiency of a second heat exchanger is estimated by using either or both of a tank water temperature and a temperature of a second refrigerant flowing through a water circuit. When the heat transfer efficiency is determined to be high, an operation switching unit raises an output of a heat source device. When the heat transfer efficiency is determined to be low, the operation switching unit lowers the output of the heat source device.01-31-2013
20130025300HEAT PUMP WATER HEATER - An energy efficient heat pump system capable of operating in extreme low and high temperature environments. The heat pump system includes an evaporator, a heater operatively associated with the evaporator, compressor and condenser. In an exemplary embodiment, the heat pump system may further include a plasma pulse-spark system to facilitate removal of scale deposits. The heater heats an environmental medium prior to the environmental medium exchanging energy with a refrigerant located in an evaporator coil of the evaporator in order to maintain a predetermined minimum temperature differential between the environmental medium when it contacts the evaporator coil and the refrigerant when located in the evaporator coil. The system allows efficient operation at low temperatures.01-31-2013
20130042635HEAT PUMP WATER HEATER IN CONJUNCTION WITH GAS WATER HEATER - A method for heating water delivered and stored in a water heater storage tank includes activating at least one of dual fuel heater types in response to various modes of operation. The water heater is preferably a dual fuel or hybrid heat pump gas water heater that includes a heat pump as the first type of heater for heating the water, and a gas burner as the second type of heater that transfer heat to the water. One or more sensors monitor water temperature and communicate with a controller to activate one of, or both of, the first and second types of heaters. If there is an electrical power outage, the hybrid heat pump gas water heater is still able to heat the water.02-21-2013
20120174602SYSTEM FOR THE OVERALL CONTROL OF HEAT FOR ELECTRICALLY PROPELLED MOTOR VEHICLE - A system for overall control of heat for a passenger compartment and for electrical units in a motor vehicle that is completely or partially propelled by an electric engine powered by a battery, including a heat-control fluid circuit coupled to a heating device and/or to a cooling device enabling the fluid to store calories or frigories when the system is plugged into an electrical network outside of the vehicle. The fluid circuit is capable of releasing calories and/or frigories to the air of the passenger compartment, in an alternating manner, either through a heat exchanger between the circuit and the air of the passenger compartment, or using a climate circuit forming a heat pump and/or an air-conditioning system.07-12-2012
20100043461Energy storage and temperature change type air conditioning method with underground reservoir and water source heat pump, and the dedicated device thereof - The present invention discloses a variable temperature air-conditioning method using underground reservoir and water-source heat pump with energy-storage and its specialized equipment, which includes a geothermal heat exchanging cycling loop and an air-conditioning heat exchanging cycling loop, wherein the air-conditioning heat exchanging cycling loop includes a variable temperature air-conditioning heat exchanging cycling loop. In the geothermal heat exchanging cycling loop, the water-source heat pump exchanges energy with energy-storage tanks, and in the air-conditioning heat exchanging cycling loop, the energy-storage tanks exchanges energy with an air-conditioning load loop.02-25-2010
20130047639SYSTEM AND METHOD FOR STORING THERMAL ENERGY AS AUXILIARY POWER IN A VEHICLE - A system is provided for capturing energy from heat expelled in an exhaust of an engine of a motor vehicle and storing the captured energy. The system comprises a generator, a condenser, an evaporator, and an absorber. The generator captures heat from the exhaust of the engine and may be configured for circulating a first solution having a solute that is vaporizable by heat captured by the generator. The condenser may be coupled to the generator for receiving vaporized solute and condensing the vaporized solute to a liquid. The evaporator may be coupled to the condenser and have an orifice between the condenser and the evaporator. The evaporator may have a first fluid passage for circulating the solute and a second fluid passage for circulating a second solution. The first and second fluid passages may be configured such that solute running through the first fluid passage is vaporizable by heat absorbed from the second solution running through the second fluid passage, thereby cooling the second solution. The absorber may be coupled to the evaporator and the generator. The absorber may be configured to return the solute to solution by mixing the solute with a solvent of the first solution supplied by the generator, and for returning the first solution to the generator to complete a cycle of the system.02-28-2013
20130067939DEHUMIDIFIER DRYER USING AMBIENT HEAT ENHANCEMENT - An apparatus is configured to receive an incoming air stream from within an enclosure and to exhaust an outgoing air stream into the enclosure, the incoming and outgoing air streams flowing in a flow direction. The apparatus comprises an evaporator, a compressor, a condenser, and a heat exchanger. The heat exchanger has a heat extraction portion and a heat depositing portion, wherein the heat extraction portion is disposed in an air stream outside of the enclosure and wherein the heat depositing portion is disposed downstream of the evaporator with respect to the flow direction. A method includes receiving an incoming air stream from within an enclosure in a dryer apparatus, the apparatus including an evaporator, a compressor, and a condenser. A heat exchanger is operably connected to the dryer apparatus to transfer sensible heat from an air stream outside of the enclosure to a location downstream of the evaporator.03-21-2013
20120111032HEAT PUMP SUPPLY APPARATUS HAVING A COMBINED USE WITH AN AIR CONDITIONER - A hot water supply apparatus for combined use with an air conditioner is provided that may include an indoor unit having an indoor heat exchanger to heat exchange a first refrigerant with indoor air, and a cascade hot water heater connected to the indoor unit to receive the first refrigerant and to provide a second refrigerant to heat water. The cascade hot water heater may perform a heat exchange between the first refrigerant and a second refrigerant. The cascade hot water heater may include a capacity variable compressor to limit a maximum flowing amount of the second refrigerant and increase a flowing amount of the first refrigerant to flow to the indoor unit.05-10-2012
20120216551CASCADE REFRIGERATION SYSTEM WITH FLUOROOLEFIN REFRIGERANT - The present invention relates to a cascade refrigeration system which circulates a refrigerant comprising a fluoroolefin therethrough. The cascade refrigeration system includes a low temperature refrigeration loop and a medium temperature refrigeration loop. The fluoroolefin circulates through either loop, or both. In a particular embodiment, the fluoroolefin circulates through the medium temperature loop. In a particular embodiment, where the cascade refrigeration system includes a first and a second cascade heat exchanger, and a secondary heat transfer loop which extends between the first and second cascade heat exchangers, either the first and/or second refrigerant may be, but need not necessarily be, a fluoroolefin.08-30-2012
20110277488Pool Heating System and Method - A pool heating system is disclosed. The pool heating system includes, in some embodiments, an immersed condenser coil. In some embodiments, the immersed condenser coil is immersed in pool of water receiving hot refrigerant gas at high pressure from an outdoor unit, transferring heat to water in the pool, condensing the gas and transmitting condensed refrigerant to the outdoor unit. The system also includes an outdoor unit. In some embodiments, the outdoor unit includes a compressor, an expansion valve, an evaporator, and a fan.11-17-2011
20120186278HOT WATER STORAGE TYPE HOT WATER SUPPLY SYSTEM AND OPERATION METHOD OF THE SAME - A hot water storage type hot water supply system includes a storage battery unit, a heat pump cycle, a water storage tank, a water circulation path, first and second paths, first and second temperature sensors, and a controller. The heat pump cycle circulates a first refrigerant. The first and second paths circulate a second refrigerant. The first and second sensors sense temperatures of the storage battery unit and water stored in the tank, respectively. The controller controls the second refrigerant to flow in the first or the second path when the temperature of the storage battery unit sensed by the first sensor is higher or lower than a first or a second predetermined temperature, respectively. The controller controls to close the first and second paths when the temperature of the storage battery unit sensed by the first sensor is not lower than the second predetermined temperature and not higher than the first predetermined temperature.07-26-2012
20110283718HEAT-SOURCE SYSTEM AND METHOD FOR CONTROLLING THE SAME - A heat-source system includes centrifugal-chillers, cooling-water pumps, cooling towers, cooling-tower fans, chilled-water pumps, and a control unit for controlling them. A plurality of the cooling towers are provided so as to have a cooling-tower capacity corresponding to the total capacity of the rated capacities of the respective centrifugal-chillers, the cooling towers being commonly connected to the plurality of centrifugal-chillers. The control unit preliminarily prepares an optimum cooling-tower capacity relationship representing the cooling-tower capacity with which the heat-source system efficiency, taking into consideration the centrifugal-chillers, the cooling-water pump, the cooling towers, the cooling-tower fan, and the chilled-water pump, is higher, in relation to the outside-air wet-bulb temperature and the centrifugal-chiller partial load factor. The control unit determines the number of cooling towers to be operated by referring to the optimum cooling-tower capacity relationship, on the basis of the outside-air wet-bulb temperature and the partial load factor of the centrifugal-chillers during operation.11-24-2011
20110296855Thermal Management System with Dual Mode Coolant Loops - A dual mode, thermal management system for use in a vehicle is provided. At a minimum, the system includes a first coolant loop in thermal communication with a battery system, a second coolant loop in thermal communication with at least one drive train component (e.g., electric motor, power electronics, inverter), and a dual mode valve system that provides means for selecting between a first mode where the two coolant loops operate in parallel, and a second mode where the two coolant loops operate in series.12-08-2011
20110214437Heat pump system and control method thereof - A heat pump system which executes cooling and heating operations of an A2A indoor unit and cooling and heating operations and a hot water operation of an A2W indoor unit in a time division multiplexing (TDM) method, and a control method thereof. Further, the heat pump system solves shortage of a refrigerant during a heating operation of the A2A indoor unit or the A2W indoor unit when the TDM method is used. Therefore, the heat pump system includes a control unit to alternately operate the A2A indoor unit or the A2W indoor unit, upon judging that a simultaneous operating condition of the A2A indoor unit or the A2W indoor unit is satisfied. The heat pump system further includes a refrigerant distribution unit to circulate a refrigerant selectively to the A2A indoor unit or the A2W indoor unit.09-08-2011
20090260370SECONDARY COOLING PATH IN REFRIGERATOR - A refrigerator includes a secondary cooling path for circulating liquid coolant through the refrigerator wherein the liquid coolant is cooled by the freezer compartment and wherein the liquid coolant cools the ice maker and the ice bin as the liquid coolant circulates through the secondary cooling path. A pump is positioned along the secondary cooling path for pumping the liquid coolant through the secondary cooling path. A tube having a first end proximate the pump and an opposite end exposed to atmosphere may control suction pressure associated with the pump. The refrigerator reduces frost build up through configuration of the secondary cooling path or performing ice harvesting operations which melt frost. The secondary cooling path may be used to provide for circulating hot liquid. The secondary cooling path may be used to provide for circulating liquid coolant during a power outage.10-22-2009
20120096877HYDROFLUOROCARBON REFRIGERANT COMPOSITIONS FOR HEAT PUMP WATER HEATERS - Hydrofluorocarbon refrigerant compositions enable the use of existing compressor technologies in heat pump water heaters in a reliable (low discharge temperatures and pressures) and efficient (high capacity and efficiency) manner. The refrigerant comprises blends of pentafluoroethane (HFC-125), difluoromethane (HFC-32), tetrafluoroethane (HFC-134a) and tetrafluoropropene (HFO-1234ze).04-26-2012
20100024444HEAT RECOVERY SYSTEM FOR A TURBOMACHINE AND METHOD OF OPERATING A HEAT RECOVERY STEAM SYSTEM FOR A TURBOMACHINE - A heat recovery system includes a source of waste heat, and a refrigeration system operatively connected to the source of waste heat. The refrigeration system is capable of extracting heat rejected from the source of waste heat to form a cooling medium.02-04-2010
20110167843HEAT PUMP AND METHOD FOR CALCULATING HEATING-MEDIUM FLOW RATE OF HEAT PUMP - A heating-medium flow rate is obtained with sufficient accuracy even if an inexpensive flow rate sensor is used. Provided is a turbo-refrigerator including an evaporator that cools or heats a heating medium flowing from an external load, a condenser that exchanges heat with outside air or cooling water, a coolant circulation path through which a coolant is circulated between the evaporator and the condenser, and a turbo-compressor provided in the coolant circulation path, the turbo-refrigerator comprising a differential pressure sensor that measures the differential pressure between the inlet-side pressure and the outlet-side pressure of cold water in the evaporator, and a control panel storing a loss factor of the evaporator and calculating the flow rate of the cold water in the evaporator on the basis of the loss factor and the differential pressure output from the differential pressure sensor, wherein the control panel performs control using the calculated flow rate of the cold water and transmits the flow rate of the cold water to facility-side equipment.07-14-2011
20110167842ADSORPTION APPARATUS COMPRISING A HEAT RECOVERY SYSTEM - The invention relates to an adsorption machine, comprising 07-14-2011
20100275619COOLING SYSTEM FOR A BATTERY SYSTEM AND A METHOD FOR COOLING THE BATTERY SYSTEM - A cooling system for a battery system and a method for cooling the battery system are provided. The cooling system includes a housing having first and second enclosed portions, and a first evaporator and a first evaporator fan disposed in the first enclosed portion that recirculates air in a first closed flow path loop within the first enclosed portion. The first evaporator extracts heat energy from the air in the first closed flow path loop to reduce a temperature level of a first battery module in the first enclosed portion. The cooling system further includes a condenser disposed in the second enclosed portion and fluidly coupled to the first evaporator, which receives heat energy in a refrigerant from the first evaporator and dissipates the heat energy. The cooling system further includes a compressor disposed in the second enclosed portion that recirculates the refrigerant through the first evaporator and the condenser.11-04-2010
20090288430HEAT PUMP WITH THERMAL ENERGY TRANSFER UNIT AND METHOD - A thermal energy transfer unit is used in conjunction with a conventional Freon based heat pump system. One or several thermal energy transfer units are operatively interconnected to one or several Freon based heat pump systems and share a common energy storage tank. Each thermal energy transfer unit converts energy from a compressor and condensing coil of the conventional heat pump system and stores it in the common energy storage tank when electricity is in low demand. Each thermal energy transfer unit retrieves stored energy from the common storage tank and provides air conditioning without the use of the compressor when electricity is in high demand. Each thermal energy transfer unit can be disabled to allow the heat pump units to perform as if they and the energy storage tank were not connected. One or all of the units can be disabled without affecting the performance or purpose of the others.11-26-2009
20120291459METHOD AND APPARATUS FOR AIRCRAFT GALLEY COOLING - Described in this application for patent is a novel method and apparatus for providing cooling to an aircraft galley. The aircraft galley is cooled by means of a central aircraft cooling line, including a phase change cooling system and a ram air heat exchanger.11-22-2012
20110197600HEAT PUMP WATER HEATER AND OPERATING METHOD THEREOF - A refrigerant circuit of a heat pump water heater has a compressor, a four-way valve, a water heat exchanger, a heat storage transfer pipe contained in a heat storage water tank, an expansion valve, and an air heat exchanger and forms a refrigerating cycle by sequentially connecting them. A water circuit of the heat pump water heater has a water inlet pipeline that supplies water to the water heat exchanger, a hot water tank, and a water outlet pipeline that allows the water heat exchanger to communicate with the hot water tank, in which water is supplied to the heat storage water tank through a heat storage water tank water feed pipe branching from the water inlet pipeline by opening a heat storage water tank water feed opening/closing valve) and the water in the heat storage water tank can be discharged through the heat storage water tank water discharge pipe (by opening a heat storage water tank water discharge opening/closing valve).08-18-2011
20110203298Heat pump system and control method thereof - A heat pump system, the operation of which is controlled using a temperature difference between a water inlet and a water outlet of a heat exchanger, exchanging heat between a refrigerant and water, and a control method thereof. The heat pump system includes temperature sensors installed on a water circulation pipe unit at water inlet and outlet sides of a heat exchanger, and heats a load to a set temperature by controlling a compressor or an expander according to a difference between temperatures sensed by the temperature sensors. Here, a temperature of water transmitted to the load is set to be greater than a target load temperature by a reference value, and if the temperature difference is smaller than a designated value, the operation of the heat pump system is stopped.08-25-2011
20130019615HEAT PUMP SYSTEM FOR VEHICLE AND CONTROL METHOD THEREOF - A method for controlling a heat pump system is provided with air conditioning means connected to a controller and including a plurality of valves and expansion valves connected to each other through a refrigerant line and a bypass line, a compressor, an accumulator, an evaporator, an exterior condenser, an interior condenser, and an HVAC module having a PTC heater and a door at a warming mode, a cooling mode, a dehumidification mode, a dehumidification/defrosting mode, or an extremely low temperature dehumidification/defrosting mode according to selection of a driver.01-24-2013
20080209922Restriction in Vapor Injection Line - A refrigerant system can be operated in either vapor injection mode or unloaded mode. A restriction to the vapor injection flow is incorporated into the refrigerant system. The restriction is placed on the vapor injection line upstream of a point where the injection line meets the unloader line. In this case, the flow is restricted for the vapor injection mode of operation to a desired level. However, when the refrigerant system operates in the unloaded mode, there is no restriction to the by-pass flow, which is beneficial to the system performance in this mode of operation. In one of the embodiments, the restriction area can be adjusted to achieve the best performance during the vapor injection mode of operation in relation to the operating conditions.09-04-2008
20110219792METHOD FOR HEATING AND/OR AIR CONDITIONING A VEHICLE - The present invention relates to method for heating and/or air conditioning the passenger compartment of an automobile using a reversible cooling loop containing a refrigerant including 2,3,3,30-tetrafluoropropane and at least one compound chosen from among propane, propylene and ethylene. Said method is particularly suitable when the outside temperature is lower than −20° C. The method is also suitable for hybrid automobiles, which are designed to operate in alternation between a heat engine and an electric engine, as well as for electric vehicles. The present invention also relates to a composition including 2,3,3,3-tetrafluoropropane and at least one compound chosen from among propylene and ethylene, suitable for being used for refrigeration, air conditioning and heating.09-15-2011
20110219791COMPOSITION INCLUDING 2,3,3,3-TETRAFLUOROPROPENE, METHOD FOR HEATING AND/OR AIR CONDITIONING A VEHICLE - The present invention relates to a composition including 2,3,3,3-tetrafluoropropene, difluoromethane and at least one compound chosen among propane, propylene and ethylene, suitable for being used for refrigeration, air-conditioning and heating. The present invention also relates to a method for heating and/or air conditioning the passenger compartment of an automobile using a reversible cooling loop containing a refrigerant including said composition. Said method is particularly suitable when the outside temperature is lower than −20° C. The method is also suitable for hybrid automobiles, which are designed to operate in alternation between a heat engine and an electric engine, as well as for electric vehicles.09-15-2011
20110225991HIGH EFFICIENCY DOUBLE-EFFECT CHILLER HEATER APPARATUS - The absorption chiller-heater apparatus of present invention utilizes a portion of direct heat, used to heat water, for providing the refrigeration effect. The external heat input required for providing refrigeration is minimal; hence, the efficiency of the apparatus is increased by 30-40% over the conventional systems. Further, as the quantum of the external heat source required for a new cycle is reduced, the size of the high temperature generator required, is smaller, which results in lower capital costs. The apparatus provides chilled water which can be used for various industrial purposes. The absorption chiller-heater reduces CO09-22-2011
20100236261METHOD FOR UTILIZING HEAT OF COMPRESSION - Described is a method for utilizing the heat of compression accumulating during a compression process for air-conditioning and/or heating buildings and/or for heating service water. According to the invention, the heat of compression accumulating during the compression process is at least temporarily transferred to at least one consumer that serves for air-conditioning and/or heating a building and/or for heating service water by means of at least one refrigerant circuit.09-23-2010
20110056219Utilization of Exhaust of Low Pressure Condensing Steam Turbine as Heat Input to Silica Gel-Water Working Pair Adsorption Chiller - A device and method for utilizing waste heat from the exhaust of a low pressure condensing steam turbine. An adsorption chiller is driven by heat recovered from the exhaust steam by incorporating a heat exchanger between the low pressure condensing steam turbine and the condenser of the steam turbine. The heat exchanger provides heated fluid which is then utilized as the hot water for the adsorption chiller. The adsorption chiller outputs chilled water which may be beneficially used for many purposes in the power plant.03-10-2011
20100251734PLANT FOR HEAT-REGULATING A FIRST FLUID AND A SECOND FLUID USED FOR AIR-CONDITIONING PREMISES - A plant for heat-regulating a first fluid and a second fluid for the air-conditioning of premises, including a source of primary thermal energy capable of providing a hot fluid, an absorption refrigerating machine supplied with the primary thermal energy, a first auxiliary circuit for recirculating the first fluid, which exits hot from the absorption machine and returns cold into the same machine, a second auxiliary circuit for recirculating the second fluid, which exits cold from the machine and returns hot into the same machine, there being provided a heat-exchange mass capable of supplying/absorbing heat, means capable of connecting alternately the first auxiliary circuit or the second auxiliary circuit of the absorption machine to the thermal mass or to the user appliances for the associated heat exchange, the primary thermal energy being hot water.10-07-2010
20110126559CONTROL SYSTEM - A vapor compression system that circulates a fluid through a closed loop interconnecting a compressor, a first heat exchanger, a flow-restricting expansion device, and a second heat exchanger. The system further includes a vessel in a first fluid communication and a selective second fluid communication with the loop between the compressor and the first heat exchanger with each of the first and second fluid communication configured to receive fluid from the loop. The vessel is in a third fluid communication with the first heat exchanger configured to provide fluid to the first heat exchanger. In response to a predetermined ambient temperature surrounding the system, the second fluid communication is selectively opened to provide an increased fluid flow from the vessel to the first heat exchanger.06-02-2011
20120067067INSTALLATION AND METHOD FOR THE PRODUCTION OF COLD AND/OR HEAT - An installation for the production of cold and/or heat has a driving and a receiving machine. The driving machine has means for circulating a working fluid G03-22-2012
20110030395INLET AIR FLOW GUIDE FOR ACDX FAN COIL - An inlet air flow guide for a condensing unit of an air cooled direct expansion (ACDX) air conditioning unit. The flow guide has a panel having at least a portion spaced from a surface of the condensing unit to define a plenum for cooling air to enter the condensing unit from one side. A condensing unit of an ACDX air conditioning unit has a refrigerant cooling coil disposed in an opening, and the inlet air flow guide defines a plenum to provide an air flow passage to the opening from one side thereof. According to a method, the inlet air flow guide is installed onto the condensing unit of an ACDX air conditioning unit, wherein a panel of the flow guide has at least a portion spaced from a surface of the condensing unit to define a plenum for cooling air to enter the condensing unit from one side.02-10-2011
20110083452AUXILIARY REFRIGERATION SYSTEM AND OPERATING METHOD - Auxiliary refrigeration system used to refrigerate a wind turbine's gearbox (04-14-2011
20110239666HEAT TRANSFER PROCESSES AND EQUIPMENT FOR INDUSTRIAL APPLICATIONS - Embodiments of the present invention permit the transfer of heat energy from one process fluid to another in an industrial process without the need for an energy field or centralized energy storage. Preferred embodiments include one or more heat transfer modules that draw heat from one process fluid into circulating refrigerant in an evaporator heat exchanger and supply that heat to a different process fluid in a condenser heat exchanger. In some embodiments, adjustments are made to one or more parameters of one or more process fluids to ensure the desired heat transfer is accomplished with the heat transfer module's compressor operating near optimum efficiency.10-06-2011
20120125019SELF SUSTAINING ENERGY SYSTEM FOR A BUILDING - A self sustaining energy system for a building is provided part of which is typically driven by geothermal energy. The energy system typically uses a ground source heat pump for heating and cooling the building airspace and an organic Rankine cycle drive for producing electricity. A solar powered heating system may also serve as a heat source for providing domestic hot water and supplemental airspace heating.05-24-2012
20120240604HEAT PUMP SYSTEM FOR VEHICLE - A heat pump system for a vehicle includes a water cooled condenser that uses a coolant as a heat exchange media and uses waste heat generated from a motor and an electronic device to improve heating performance, efficiency, and dehumidifying performance. A control method is also described.09-27-2012
20110072836REFRIGERATION SYSTEM HAVING A VARIABLE SPEED COMPRESSOR - A two-stage cascade refrigeration system is provided having a first refrigeration stage and a second refrigeration stage. The first refrigeration stage defines a first fluid circuit for circulating a first refrigerant, and has a first compressor, a condenser, and a first expansion device that is in fluid communication with the first fluid circuit. The second refrigeration stage defines a second fluid circuit for circulating a second refrigerant, with the second refrigeration stage having a second compressor, a second expansion device, and an evaporator that is in fluid communication with the second fluid circuit. A heat exchanger is in fluid communication with the first and second fluid circuits to exchange heat between the first and second refrigerants. At least one of the first or second compressors is a variable speed compressor.03-31-2011
20110048037Cooling method and plant - The present invention relates to a method for cooling an indoor environment in a house with the aid of a cooling plant, and to a cooling plant for cooling an indoor environment. The cooling plant comprises a cold store in the form of a rock store, a cooling system for cooling the indoor environment and a cooling medium for transport of cold. The cooling plant has only one cooling mode and only one charging mode. In cooling mode, the cooling medium is cooled with cold from the rock store and the cooling system is fed only with cooling medium cooled only with cold from the rock store. In charging mode, the cooling medium is cooled only with outside air and/or ground cold and the rock store is cooled only with the cooling medium cooled only by outside air and/or ground cold.03-03-2011
20110041524REFRIGERANT SYSTEM PERFORMANCE ENHANCEMENT BY SUBCOOLING AT INTERMEDIATE TEMPERATURES - A refrigerant system operates in an environment defined by three distinct temperature levels, such as, for instance, the outdoor ambient temperature level, the indoor temperature level and the refrigeration temperature level. The refrigerant system is provided with an air-to-refrigerant heat exchanger located within the general indoor environment and connected to receive the flow of refrigerant from a heat rejection heat exchanger. The air-to-refrigerant heat exchanger gives off heat to the indoor air and in the process further cools the refrigerant flowing to an expansion device to thereby increase the cooling effect provided by an evaporator to the refrigeration area. Provisions are also made to partially or entirely bypass the air-to-refrigerant heat exchanger and/or the heat rejection heat exchanger, on a selective basis.02-24-2011
20120240603Integrated Gasification Combined Cycle System with Vapor Absorption Chilling - The present application and the resultant patent provide an integrated gasification combined cycle system. The integrated gasification combined cycle system may include a gas turbine engine, one or more power plant components, one or more carbon dioxide compressors, and a vapor absorption chiller. The vapor absorption chiller is driven by a waste heat source flow from the carbon dioxide compressors to produce a chilling medium flow to cool the power plant components.09-27-2012
20100319369Valve and subcooler for storing refrigerant - A reversible HVAC heating/cooling refrigerant system includes a novel valve system that allows an outdoor heat exchanger to function as a subcooler during a cooling or defrost mode and function as a receiver tank for storing excess liquid refrigerant during a heating mode. In the heating mode, a cooling expansion valve is kept slightly open to flood the subcooler with liquid refrigerant while a heating expansion valve is regulated to maintain a desired level of superheat at the suction side of the refrigerant system's compressor. The novel valve system also serves as a pressure relief valve to protect the subcooler from excess pressure caused by thermal expansion of liquid refrigerant trapped within the subcooler.12-23-2010
20110173998PROCESS AND APPARATUS FOR COOLING - The invention relates to the creation of hybrid refrigeration systems. In one embodiment a low pressure booster circuit is linked to an absorption plant to provide cooling at lower temperatures that can be achieved by the absorption plant alone. The combined systems are efficient compared to vapour compression systems, especially when “waste” heat from other processes is used to drive the absorption part of the circuit. The absorption plant can be provided with heat either by direct firing of a fuel, by waste heat from a combined heat and power (CHP) prime mover (such as a gas engine or gas turbine for example), or by any suitable source of waste heat from another process.07-21-2011
20100064699REFRIGERATION-GENERATION SOLAR UNIT FOR AN AIR-CONDITIONING SYSTEM, HEAT-GENERATION SOLAR UNIT, CORRESPONDING DEVICES AND CORRESPONDING CONTROL METHOD - A refrigeration-generation solar unit is provided for an air-conditioning system. The system includes a first heat exchanger comprising: absorption machine including a boiler and evaporator, the evaporator including at least a second heat exchanger, and the boiler including at least a third heat exchanger; a plurality of solar collectors; a first cooling fluid circuit between the first heat exchanger and the second heat exchanger; and a second heat-transfer fluid circuit between the third heat exchanger and the plurality of solar collectors. The second circuit includes a circulation pump supplying heat-transfer fluid to the plurality of solar collectors and a temperature sensor to measure the temperature of the heat-transfer fluid at the outlet of the plurality of solar collectors. The solar unit includes varies the operational delivery rate of the circulation pump according to the fluid temperature recorded by the temperature sensor at the outlet of the plurality of solar collectors.03-18-2010
20100024443HEAT RECOVERY SYSTEM - A heat recovery system for a turbomachine system includes a heat removal system and a refrigeration system. The heat removal system is fluidly connected to at least one component of the turbomachine system. The heat removal system passes a cooling fluid through the at least one component to absorb heat. The refrigeration system is operatively connected to the heat removal system. The refrigeration system extracts the heat from the cooling fluid passing through the at least one component of the turbomachine system to produce a cooling effect.02-04-2010
20120031119ATMOSPHERIC LAPSE RATE COOLING SYSTEM - A heat transfer fluid can be cooled using the atmospheric thermal lapse rate. The heat transfer fluid can be ascended to a predetermined altitude above ground level where a temperature of the atmosphere is less than a temperature at the ground level. The heat transfer fluid can be cooled to a predetermined temperature by heat exchange between the heat transfer fluid and the atmosphere. The heat transfer fluid can then be descended to ground level while inhibiting heat transfer with the atmosphere tending to warm the cooled fluid.02-09-2012
20120304673INTEGRATED ENERGY MANAGEMENT SYSTEM INCLUDING A FUEL CELL COUPLED REFRIGERATION SYSTEM - The disclosure relates to an integrated energy management system for managing thermal and electrical energy in a fuel cell coupled refrigeration system. In one example, a refrigeration cycle is driven by heat provided alternatively by a fuel cell and an electric heating device. In another example, a refrigeration cycle is driven by heat provided by a fuel cell to reduce consumption of electrical grid supplied power.12-06-2012
20120304674CLIMATE CONTROL SYSTEM FOR A VEHICLE AND METHOD FOR CONTROLLING TEMPERATURE - In a climate control system for a vehicle having at least one refrigerant circuit, at least one temperature control circuit for controlling the temperature of a vehicle interior, and at least one vehicle component, in particular of an electric vehicle or hybrid vehicle, at least one device for absorbing heat from the temperature control circuit and at least one device for releasing heat to the temperature control circuit are provided. In a method for controlling the temperature of vehicle components using at least one refrigerant circuit and at least one temperature control circuit, heat is absorbed from the temperature control circuit into the refrigerant circuit on the low-pressure side of the refrigerant circuit, and heat is released to the temperature control circuit by the refrigerant circuit on the high-pressure side of the refrigerant circuit.12-06-2012
20120304672FUEL CELL-COUPLED HEATING AND REFRIGERATION SYSTEM - Disclosed are fuel cell coupled refrigeration systems and to the use of fuel cells to provide thermal energy to a refrigeration system. More particularly, a heat exchanger couples, directly or indirectly, to a fuel cell and a heat driven refrigeration system to transfer at least a portion of thermal energy generated by the fuel cell to the refrigeration system, thereby driving a refrigeration cycle of the refrigeration system.12-06-2012
20120042665REJECT HEAT DRIVEN ABSORPTION COOLING CYCLE - An electric machine system includes: an electric motor; and an absorption cooling system driven by heat generated by the electric motor and configured to cool a primary cooling fluid that removes the heat from the electric motor to a temperature below an ambient temperature of an ultimate heat sink. A method for operating the electric machine system is also disclosed.02-23-2012
20110314843CO2-REFRIGERATION DEVICE WITH HEAT RECLAIM - A refrigeration device containing CO12-29-2011
20110154837REFRIGERANT SYSTEM WITH ADAPTIVE HOT GAS REHEAT - A refrigerant system incorporates a hot gas reheat circuit. The hot gas reheat circuit includes a reheat valve for selectively tapping at least a portion of refrigerant from a location downstream of a compressor and upstream of a condenser, and through a reheat heat exchanger. At least one refrigerant flow control device controls the amount of refrigerant passing through the reheat heat exchanger. A control for the refrigerant system is operable to receive inputs from an indoor environment, and to control the amount of refrigerant passing through the reheat heat exchanger to achieve desired temperature and humidity in the conditioned environment.06-30-2011
20090320503COGENERATION SYSTEM - A cogeneration system includes a coolant circuit through which a coolant is circulated for conducting a heat exchange with an exhaust heat generated by a power generation unit, a buffer tank provided at the coolant circuit and storing the coolant, a heating circuit including a heating power source and a heating terminal, the heating power source generating a heating water that is circulated to be supplied to the heating terminal, a heating water bypass circuit bypassing a flow passage of the heating circuit at a portion between an exit of the heating terminal and the heating power source, and a heat exchanging device performing a heat exchange between the heating water flowing through the heating water bypass circuit and the coolant.12-31-2009
20120011866REFRIGERANT VAPOR COMPRESSION SYSTEM WITH HOT GAS BYPASS - A refrigerant vapor compression system includes a hot gas bypass line establishing refrigerant vapor flow communication between the compression device and the refrigerant heat absorption heat exchanger, and bypassing the refrigerant heat rejection heat exchanger and the primary expansion device. A refrigerant vapor flow control device is interdisposed in the hot gas bypass line. The flow control device has at least a first open position in which refrigerant vapor flow may pass through the hot gas bypass line and a closed position in which refrigerant vapor flow may not pass through the hot gas bypass line.01-19-2012
20120011865Combined Water Extractor and Electricity Generator - A water extraction system having a cooling system adapted to cool air to below the dew point, the cooling system including an absorption chiller (01-19-2012
20120055178HEAT PUMP APPARATUS AND METHOD FOR CONTROLLING REGULATING VALVE - It is aimed to provide a heat pump type hot-water supply outdoor apparatus that can control a temperature of a compressor shell, according to a water temperature of a water circuit and a temperature of the compressor. A heat pump type hot-water supply outdoor apparatus includes a refrigeration cycle including a compressor, a water-refrigerant heat exchanger, an expansion valve, and an air heat exchanger, a water jacket that is arranged on the shell of the compressor and connected in the middle of a branch water circuit branching in parallel to a main water circuit which starts from a hot water storage tank and returns to the hot water storage tank through a water-refrigerant heat exchanger, a water flow valve that is connected between a branch and the water jacket and regulates the quantity of water flow, according to a control signal, a shell temperature detection sensor that senses a temperature of the shell of the compressor, a water temperature sensor that is installed in the vicinity of the branch and senses a temperature of the water flowing out of the hot water storage tank, and a control apparatus that generates a control signal for controlling the water flow valve, based on the temperature sensed by the shell temperature detection sensor and the temperature sensed by the water temperature sensor, and outputs it to the water flow valve.03-08-2012
20120055177Air conditioner and control method thereof - An air conditioner controls supply of refrigerant so that the refrigerant is first supplied to one or more indoor units in operation from an outdoor unit, and is then supplied to a hot water generator, thereby sufficiently supplying refrigerant to the indoor units in heating operation even when the hot water generator is operated.03-08-2012
20090301109METHOD AND APPARATUS FOR CONTROL OF CARBON DIOXIDE GAS COOLER PRESSURE BY USE OF A TWO-STAGE COMPRESSOR - A transcritical vapor compression system includes a fluid circuit circulating a refrigerant in a closed loop. The fluid circuit has operably disposed therein, in serial order, a first compressor, an intercooler, a second compressor with a variable capacity, a first heat exchanger, an expansion device and a second heat exchanger. The first compressor compresses the refrigerant from a low pressure to an intermediate pressure. The second compressor compresses the refrigerant from the intermediate pressure to a supercritical pressure. The first heat exchanger is positioned in a high pressure side of the fluid circuit. The second heat exchanger is positioned in a low pressure side of the fluid circuit. The expansion device reduces the pressure of the refrigerant from a supercritical pressure to a relatively lower pressure. Cooling means cools the refrigerant within one of the compressors.12-10-2009
20120151946METHOD AND DEVICE FOR HEAT RECOVERY ON A VAPOUR REFRIGERATION SYSTEM - A method and a device for heat recovery on a vapour compression refrigeration system allowing to produce hot water, includes at least a first piping closed refrigerating circuit in which a refrigerant fluid circulates, a compressor, an evaporator, an expansion valve, a condenser and/or a heat recovery unit including a water inlet and a water outlet respectively connected to a second piping circuit comprising a circulating pump. At least one physical unit of the refrigerant fluid and/or water of the second piping circuit is determined. When the physical unit is lower than a predetermined threshold, condensing temperature is increased, and when said physical unit is greater than said predetermined threshold, condensing temperature is decreased to a minimum value.06-21-2012
20120060521TRANSCRITICAL HEAT PUMP WATER HEATER AND METHOD OF OPERATION - A method for increasing efficiency of a transcritical heat pump water heater system is provided, as well as the corresponding system. The refrigerant, such as CO2, is compressed to a supercritical point and passed through a gas cooler that is wrapped at least partially around a water storage tank, wherein the refrigerant transfers heat to water stored in the tank. The hot water is discharged from the storage tank proximate to a top of the tank, and cold water is introduced into the tank proximate to a bottom of the tank. The supercritical refrigerant is directed to flow through the gas cooler from a top point to a lowermost point in a flow direction such that the refrigerant exits the gas cooler proximate to the bottom of the tank at a location of the coldest water within the storage tank.03-15-2012
20120060522METHOD FOR CONTROLLING AN AIR CONDITIONING SYSTEM - An air conditioning method is provided. The method comprises when a refrigerant circuit is in operation and a temperature of an evaporator of the refrigerant circuit is lower than a temperature of a heat exchanger of a heating circuit, transferring heat from the heat exchanger to air passing through the heat exchanger, and when the refrigerant circuit is not in operation and the temperature of the evaporator is higher than the temperature of the heat exchanger, transferring heat from the air passing through the heat exchanger to the heat exchanger. In this way, the heat exchanger functions to augment the cooling capabilities of the evaporator.03-15-2012
20120117986Solar collector and solar air conditioning system having the same - A solar air conditioning system and method of superheating working fluid is provided. The solar air conditioning system superheats the working fluid using radiant energy from the sun, and then delivers the working fluid as a superheated and higher-pressured gas to a condenser within the solar air conditioning system. The solar air conditioning system includes a solar collector within which the working fluid is superheated.05-17-2012
20120247132Air conditioning/dehumidifying unit - An air conditioning unit having: a first air passageway and a second air passageway adjacent to the first air passageway. Dampered air inlets are provided at one end of the first and second air passageways to selectively provide indoor air or outdoor air to each passageway. There is an indoor air outlet in the first air passageway and an outdoor air outlet in the second air passageway, both outlets at the other end of the passageways. There is a first blower in the first passageway and a second blower in the second passageway for moving air through each passageway. The unit has a refrigerant system with an evaporator in the first passageway, a compressor, a condenser in the second passageway, and a refrigerant line joining the evaporator, the compressor, and the condenser, in series, in a closed loop. The unit can be used in an air conditioning mode, a dehumidifying mode and a purge/ventilating mode. The unit is particularly suited for use in an indoor swimming pool.10-04-2012
20120186279UTILITIES GRID FOR DISTRIBUTED REFRIGERATION SYSTEM - A distributed refrigeration appliance system for use in a residential kitchen and other locations in a dwelling and includes multiple separate refrigeration appliance modules, a central cooling system and a cooling circuit. The system can include one or more satellite stations having a heat exchanger for supplying chilled air to one or more refrigeration appliance modules. One or more refrigeration appliance modules can include a thermal cascade cooling device to cool the module to lower temperatures than the cooling circuit can attain. One or more refrigeration appliance modules can be refrigeration/storage modules that can provide refrigerated, unconditioned or heated storage space. The central cooling system can be a vapor compression system having a refrigerant circuit connecting the modules. Alternately, the central cooling system can cool a secondary cooling medium circuit. The refrigeration system can have more than one refrigeration machine providing cooling to the secondary refrigeration loop.07-26-2012
20110225990Efficient heat pump - An efficient heat pump is disclosed, the heat content of the refrigerant flowing out of an existing condenser is reduced by sub-cooling using an additional condenser. The heat reduced during the sub-cooling phase is added to the evaporator to superheat the refrigerant during evaporation phase. Removing heat from condensation phase (which is otherwise wasted) of the refrigeration cycle and adding that heat to the evaporation phase (which requires additional heat) may enhance the efficiency of the heat pump.09-22-2011
20110265499CONTROLS FOR HIGH-EFFICIENCY HEAT PUMPS - As discussed herein, a first aspect of the present invention provides a method of providing improved efficiency in heating/cooling. The method can include operating an HVAC system that includes first and second heat pump compressors working together with corresponding heat pump expansion valves and heat pump heat exchangers. The method can include collecting HVAC fluid information concerning actual conditions of an HVAC fluid flowing in the HVAC system via sensors positioned in various places throughout the HVAC system. The method can include transmitting an update that includes HVAC fluid information. The method can include receiving control instructions at a heat pump controller. The method can include implementing the control instructions with the heat pump controller. Steps of the method can be repeated periodically during operation of the HVAC system.11-03-2011
20120324923HEAT PUMP AND METHOD FOR CONTROLLING THE SAME - A method for controlling a heat pump including an outdoor unit including a compressor and a first heat exchanger, an indoor unit including a second heat exchanger and an expansion valve to perform air stream cooling and heating operations, and a hydro unit connected among the compressor, the first heat exchanger, and the expansion valve, to change a flow direction of refrigerant in accordance with cold water and hot water operations. In the control method, it is determined whether the hot water operation and the air stream heating operation are simultaneously selected. When the hot water operation and the air stream heating operation are simultaneously selected, an opening degree of a valve included in the hydro unit is adjusted, to adjust amounts of refrigerant respectively supplied from the compressor to the hydro unit and the indoor unit.12-27-2012
20120090337Heat Pumps With Unequal Cooling and Heating Capacities for Climates Where Demand for Cooling and Heating are Unequal, and Method of Adapting and Distributing Such Heat Pumps - Heat pumps for climates where demand for cooling and heating are unequal and methods of adapting and distributing heat pumps for such climates. Heat pumps include a compressor, compressor motor, variable-speed drive, and controller. In a number of embodiments, non-volatile memory stores sets of constant speeds for cooling and heating, and a person can select, via an input device, different sets of speeds for cooling and heating to provide the different cooling and heating capacities. The controller then operates the unit at the selected speeds, selecting from within the set based on demand for cooling or heating. In some embodiments, different sets of speeds may have the same minimum speed but different maximum speeds. Identical heat pumps can be configured to have different capacity ratings and different advertized efficiencies for different climates.04-19-2012
20120324924THERMAL POWER UPGRADE FACILITY - The invention relates to a facility making it possible to maximize the overall power output, the facility including at least one absorption group (12-27-2012
20130008193MODULAR CHILLER HEATER REVERSING/NON-REVERSING CONVERSION APPARATUS AND METHOD - A chiller heater building air space conditioning system is set out including a plurality of interconnected modular chiller/heater units which can be operated variously in a chilling mode, a heating mode, or an off mode. An arrangement for converting a system comprising reversible modular heat pump chiller heater elements into a system comprising non-reversible modular chiller heater elements is set out.01-10-2013
20110146306START-UP FOR REFRIGERANT SYSTEM WITH HOT GAS REHEAT - A refrigerant system has a compressor for compressing and delivering refrigerant to a heat rejecting heat exchanger. Refrigerant from the heat rejecting heat exchanger passes through an expansion device, and then to an evaporator. A reheat circuit includes a reheat valve for selectively tapping refrigerant from a location downstream of the compressor and upstream of the condenser. The reheat refrigerant passes through a reheat heat exchanger, the reheat heat exchanger being positioned to be in a path of air having passed over the evaporator, and delivered into an indoor environment to be conditioned. A control for the refrigerant system is operable to receive inputs from the indoor environment to be conditioned, and to control the several components in the refrigerant system, the control being operable to determine a request for dehumidification provided without any request for significant change in the temperature of the air being delivered into the indoor environment to be conditioned, but said control starting operation of the refrigerant system by enabling cooling mode of operation initially and at least for a short period of time.06-23-2011
20110146305Optimization Of An Overall Heating Capacity Of An Air Conditioning System - The invention relates to a control process for an air conditioning system. The air conditioning system comprises a thermal loop (06-23-2011
20090260371SECONDARY COOLING APPARATUS AND METHOD FOR A REFRIGERATOR - The present invention provides a secondary cooling apparatus and method of providing cooling to one or more features in a refrigerator. In one exemplary aspect of the present invention, the refrigerator includes a cabinet having a door, a first cooling loop in the cabinet, and a second cooling loop cooled by the first cooling loop. The secondary cooling loop is adapted to cool the one or more features in the cabinet or on the door of the refrigerator. In another exemplary aspect of the present invention, a method for providing cooling in a refrigerator to one or more features in a compartment or on a door of the refrigerator includes providing a first cooling loop within a refrigerator, cooling a secondary cooling loop directly or indirectly with the first cooling loop, and transferring cooling from the secondary cooling loop to the one or more features in the compartment or on the door of the refrigerator.10-22-2009
20130167564AIR CONDITIONING APPARATUS FOR EFFICIENT SUPPLY AIR TEMPERATURE CONTROL - A system and method of controlling a multiple condenser air conditioning system that provides for efficient regulation of air temperature. The refrigeration system includes one or more valves whose operation is preferably controlled by programmable control logic to regulate flow through the refrigerant condenser(s) and sequentially control compressor discharge pressure and temperature in response to demands for heating or reheating of a supply air flow.07-04-2013
20110232305SYSTEMS AND METHODS FOR GENERATING POWER AND CHILLING USING UNUTILIZED HEAT - The present application provides a sorption system for generating power and chilling that includes at least one absorber to absorb a working fluid in a liquid sorbent, a pump in fluid communication with the absorber to yield a feed of pressurized liquid sorbent and absorbed working fluid, a heat source to heat the feed of pressurized liquid sorbent and absorbed working fluid to yield a feed of working fluid at a supercritical state, a generator in fluid communication with the feed of working fluid at a supercritical state to yield power and a feed of working fluid in an at least partially condensed state, and an evaporator in fluid communication with the feed of working fluid in the at least partially condensed state to yield chilling and uncondensed working fluid. Additional systems and method for the generating power and chilling are provided.09-29-2011
20080223048Heating System09-18-2008
20130133345AIR CONDITIONER AND METHOD OF OPERATING AN AIR CONDITIONER - An air conditioner and a method of operating an air conditioner are provided. The air conditioner may include at least one indoor device, each having an indoor heat exchanger installed therein; at least one outdoor device connected to the at least one indoor device by a refrigerant flow path, and each having a water-refrigerant heat exchanger that provides heat exchange between a refrigerant and heat source water and an outdoor device controller installed therein; a heat source water flow path connected to each water-refrigerant heat exchanger; a pump installed on the heat source water flow path; a variable flow valve installed on the heat source water flow path; a central controller that controls the at least one outdoor device; and a variable flow valve control board that regulates an opening degree of the variable flow valve and a flow rate of heat source water. The variable flow valve control board may be connected to the outdoor device controller via a first communication line, connected to the central controller via a second communication line having a different communication method from that of the first communication line, and perform protocol conversion between the central controller and the outdoor device controller.05-30-2013
20130091877AIR CONDITIONER AND METHOD OF OPERATING AN AIR CONDITIONER - An air conditioner and a method of operating an air conditioner are provided. The air conditioner may include at least one indoor device having an indoor heat exchanger that evaporates or condenses a refrigerant by heat exchange with indoor air; at least one outdoor device having a variable capacity compression device that sucks in and compresses a refrigerant of a refrigerant intake passage and discharges the refrigerant to a refrigerant discharge passage, a water-refrigerant heat exchanger that condenses or evaporates a refrigerant by heat exchange with heat source water, and an outdoor expansion device installed between the indoor heat exchanger of the at least one indoor device and the water-refrigerant heat exchanger; a heat source water flow path connected to the water-refrigerant heat exchanger; a pump installed on the heat source water flow path; and a variable flow valve installed on the heat source water flow path. An opening degree of the variable flow valve is varied depending on a pressure of at least one of the refrigerant discharge passage or the refrigerant intake passage.04-18-2013
20130111932BATTERY WARM-UP APPARATUS AND METHOD THEREOF - A the battery warm-up apparatus includes an electric motor, a battery, an electric generator for charging the battery, an engine for driving the electric generator, a refrigeration circuit arranged to pass through inside the engine in a manner that a temperature medium flows through an inside thereof, a heat exchanger, a battery-heating channel branched from the refrigeration circuit, arranged to pass through the battery and connected to the refrigeration circuit again, a first switching valve arranged at a first portion of the refrigeration circuit, the battery-heating channel being branched from the refrigeration circuit at the first portion, the first switching valve connecting and disconnecting the battery-heating channel relative to the refrigeration circuit, a battery temperature sensor, and a controller for operating the first switching valve on the basis of temperature of the battery and for allowing the temperature medium to flow through the battery-heating channel.05-09-2013
20130125566VEHICLE WITH A COOLING SYSTEM FOR COOLING AND METHOD FOR COOLING IN A VEHICLE - A cooling system of a vehicle with a fuel cell includes an absorbent circuit with an absorber tank, a regenerator tank, an absorbent pump and a first pressure reduction means and a coolant circuit with a condenser connected to a steam outlet of the regenerator tank, a second pressure reduction means and an evaporator arranged between a steam inlet of the absorber tank and the second pressure reduction means. The regenerator tank is designed to desorb the coolant in solution in the absorbent by absorbing a first quantity of heat and to introduce it in a vaporous state into the condenser. The evaporator is designed to evaporate the coolant while absorbing a second quantity of heat and to introduce it in the vaporous state into the absorber tank. At least one of the first and of the second quantity of heat could be provided by the fuel cell.05-23-2013
20110209484CONDENSER DRYER HAVING A HEAT PUMP, AND METHOD FOR OPERATING THE SAME - A condenser dryer includes a drying chamber for items to be dried; a process-air circuit including a fan; and a heat pump in which a refrigerant circulates. The heat pump has an evaporator and a condenser, with the evaporator or the condenser or both being a heat exchanger having level surfaces and including at least one endlessly folded, flattened tube to form a plurality of rows of meander stacks in laterally offset relationship.09-01-2011
20130152611AIR-CONDITIONING SYSTEM FOR A VEHICLE AND METHOD FOR AIR-CONDITIONING A VEHICLE - An air-conditioning system for a vehicle, comprising a refrigerant circuit through which a refrigerant can flow and which is configured as a heat pump circuit and as a cooling system circuit, and associated with these, a compressor, at least one external heat exchanger, at least one internal heat exchanger that is associated with an internal heating condenser, whereby a device is provided for generating an air stream that can be thermally coupled to the internal heat exchanger and to the internal heating condenser, as well as a metering device that can meter the flow of at least a partial stream of the thermally coupled air stream through the internal heating condenser is provided, wherein 06-20-2013
20110302936REFRIGERATION SYSTEM HAVING A VARIABLE SPEED COMPRESSOR - A two-stage cascade refrigeration system is provided having a first refrigeration stage and a second refrigeration stage. The first refrigeration stage defines a first fluid circuit for circulating a first refrigerant, and has a first compressor, a condenser, and a first expansion device that is in fluid communication with the first fluid circuit. The second refrigeration stage defines a second fluid circuit for circulating a second refrigerant, with the second refrigeration stage having a second compressor, a second expansion device, and an evaporator that is in fluid communication with the second fluid circuit. A heat exchanger is in fluid communication with the first and second fluid circuits to exchange heat between the first and second refrigerants. At least one of the first or second compressors is a variable speed compressor.12-15-2011
20120291460HEAT PUMP DEVICE AND REFRIGERANT BYPASS METHOD - An outdoor unit includes a bypass circuit that makes a part of refrigerant that is discharged from a compressor be bypassed to a connecting part at the time of defrosting operation. A control device of the outdoor unit performs control of opening an electromagnetic valve in the bypass circuit based on an water temperature TW (in) in an water inlet and an water temperature TW (out) in an water outlet of an water heat exchanger at the time of the defrosting operation. Further, a control device controls a valve travel of the valve of the third expansion valve in the bypass circuit based on a refrigerant temperature TR (in) in a refrigerant inlet and a refrigerant temperature TR (out) in a refrigerant outlet of the water heat exchanger in a case of the electromagnetic valve being in an open state at the time of the defrosting operation.11-22-2012
20130199217AIR CONDITIONER FOR VEHICLE - An air conditioner for a vehicle includes: a compressor (08-08-2013
20130098073AIR CONDITIONER AND METHOD OF OPERATING AN AIR CONDITIONER - An air conditioner and a method of operating an air conditioner are provided. The air conditioner may include a heat pump having a water-refrigerant heat exchanger that condenses or evaporates a refrigerant by heat exchange with heat source water; a heat source water flow path connected to the water-refrigerant heat exchanger; a pump installed on the heat source water flow path; a variable flow valve installed on the heat source water flow path; and a variable flow valve controller that controls an opening degree of the variable flow valve. The variable flow valve controller may include a heat source water minimum flow manipulator that manipulates a minimum flow rate of the heat source water and regulates the opening degree of the variable flow valve according to the manipulation of the heat source water minimum flow manipulator. Accordingly, a user or installation personnel may selectively regulate power consumption and efficiency as desired.04-25-2013
20120085108Desalination Using Low-Grade Thermal Energy - This invention describes a low temperature, self-sustainable desalination process operated under natural vacuum conditions created and maintained by barometric pressure head.04-12-2012
20120085107HEAT TRANSFER PROCESSES AND EQUIPMENT FOR INDUSTRIAL APPLICATIONS - Embodiments of the present invention permit the transfer of heat energy from one process fluid to another in an industrial process without the need for an energy field or centralized energy storage. Preferred embodiments include one or more heat transfer modules that draw heat from one process fluid into circulating refrigerant in an evaporator heat exchanger and supply that heat to a different process fluid in a condenser heat exchanger. In some embodiments, adjustments are made to one or more parameters of one or more process fluids to ensure the desired heat transfer is accomplished with the heat transfer module's compressor operating near optimum efficiency.04-12-2012
20120085106PROCESS FOR HEAT INTEGRATION BY MEANS OF A REFRIGERATION SYSTEM - A process for heat integration in engineering processes in which, in a heat carrier circuit (04-12-2012

Patent applications in class Exchanging heat between plural systems, e.g., disparate