Class / Patent application number | Description | Number of patent applications / Date published |
062094000 | By sorption | 42 |
20090133414 | Autonomous water source - An autonomous water source for extracting water from ambient air and delivering it to a plant to support growth. The system is based on an adsorption-desorption-condensation cycle using a sorption material to extract moisture from ambient air and condensing the water vapor driven off from the sorption material by subsequent heating and followed by condensation. Liquid condensate produced in this process on the condenser is collected and delivered by gravity to a plant to reduce thermal stress and to support growth. The invention provides a sustainable source of irrigation water for agriculture and forestry, including areas where no water resources exist or are not economically viable. It can be tailored in size, and therefore, output capacity, reflecting the desired water requirements of a particular application, and can be used to replace most agricultural situations now reliant on surface water drip feed systems. The device is simple, rugged, invulnerable to rain, snow, and freezing conditions, and can be designed to last for many years without service as there are few moving parts and power required for operation is provided by sunlight. | 05-28-2009 |
20090145140 | Geothermal Air Conditioning with Desiccant Dehumidification - A geothermal desiccant cycle cools and dehumidifies the air in an indoor conditioned space. The return air is split into two streams. One of the streams passes through a desiccant wheel to remove water vapor and then through a cooling coil for sensible cooling from geothermal water. The other stream is heated to increase its capacity to absorb moisture, and then is passed through the desiccant wheel to pick up the moisture transferred from the first stream and regenerate the desiccant. The second air stream, which now has a higher dewpoint temperature, flows through a geothermal cooling coil, for sensible cooling as well as condensation of the moisture. The two air streams are mixed and supplied back to the conditioned space. A regenerative air-air heat exchanger can be used to recover some of the heat used in heating the second air stream. | 06-11-2009 |
20090211276 | SYSTEM AND METHOD FOR MANAGING WATER CONTENT IN A FLUID - A system and method for managing water content in a fluid includes a collection chamber for collecting water from the fluid with a desiccant, and a regeneration chamber for collecting water from the desiccant. An evaporator is used to cool the collection chamber, and a compressor is used to compress refrigerant flowing through the evaporator. An engine powers the compressor, and also provides waste heat to the regeneration chamber to increase the amount of water expelled from the desiccant. Water from the desiccant is evaporated in air flowing through the regeneration chamber. Air leaving the regeneration chamber is cooled to extract the water for drinking or other uses. | 08-27-2009 |
20100050666 | Climatic Chamber and Control Method Therefor - A climatic chamber for rapidly reaching and maintaining a predetermined air humidity and/or a predetermined temperature. | 03-04-2010 |
20100175394 | AIR ENERGY REDUCTION METHOD AND APPARATUS USING WASTE HEAT FROM CONDENSERS OR OTHER LOW GRADE HEAT - The present invention provides a process for utilizing waste heat released by condensers of conventional air conditioning systems and more particularly using this low grade heat or other low grade sources that are slightly above ambient air temperatures to alter concentration of a liquid desiccant that contacts an ambient air stream thereby reducing its relative humidity while its temperature is controlled and generally reduced by heat exchange with another air stream that is saturated with water. | 07-15-2010 |
20100242507 | Dynamic outside air management system and method - An outside air management system in which the air is cooled by a first refrigeration condenser to a temperature either above or somewhat below the dewpoint of the incoming air so as to remove either none of the moisture to be removed, or a significant portion of it. The air then is sent to a desiccant wheel which removes the remainder of the moisture to be extracted. The temperature of the air leaving the wheel is above the desired delivery temperature. Then a heat exchanger and a second condenser remove sensible heat from the heated air leaving the desiccant wheel to bring the air to the desired temperature. Thus, the temperature and humidity are controlled substantially independently of one another. A heat pump embodiment of the invention allows the reversal of the flow of refrigerant in the system, allowing it to be used to either heat or cool. | 09-30-2010 |
20100281893 | DESICCANT DEHUMIDIFIER UTILIZING HOT WATER FOR REACTIVATION, AND RELATED METHOD - An air conditioning system includes a refrigeration cooling coil in fluid communication with process air, a refrigeration circuit containing refrigerant, a heat exchanger in fluid communication with the refrigerant and water, the heat exchanger adapted to transfer heat from the refrigerant to the water, a hot water coil in fluid communication with the water, a desiccant rotor having a process portion in fluid communication with the process air and a reactivation portion, and a reactivation blower adapted to move reactivation air over the hot water coil and through the reactivation portion of the desiccant rotor. A method of conditioning air is also described. | 11-11-2010 |
20100300123 | HYBRID DESICCANT DEHUMIDIFYING APPARATUS AND CONTROL METHOD THEREOF - Disclosed are a hybrid desiccant dehumidifying apparatus and a control method thereof which are employed under poor environment, such as a ship painting field. External air cooled by an evaporator is dehumidified and heated while passing through a desiccant dehumidifier and external air heated by condensation heat of a condenser is supplied to the desiccant dehumidifier as a regeneration air source such that high-temperature and high-humidity regeneration. A cooler is integrally formed with the desiccant dehumidifier so that the hybrid desiccant dehumidifying apparatus is manufactured in a compact size and the operating cost thereof is significantly reduced. | 12-02-2010 |
20100307175 | ENERGY RECOVERY ENHANCED CONDENSER REACTIVATED DESICCANT REFRIGERANT DEHUMIDIFIER - A method and apparatus for conditioning ambient air for use in an enclosure is disclosed which cools the ambient supply air stream in sensible energy recovery device or cools and dehumidifies the ambient supply air stream in an enthalpy energy recovery device. The thus cooled air is then cooled by a cooling coil of a refrigerant cooling system to reduce its temperature and humidity. The thus cooled and dehumidified air is then passed through a segment of a rotating desiccant wheel or through a different type of desiccant dehumidification device under conditions which reduce its moisture content and increases its temperature. The supply air is then delivered from the desiccant wheel to the enclosure. The desiccant wheel is regenerated by heating a separate regeneration air stream, provided by the exhaust air from the space and using the condensing coil of the refrigerant system to increase the regeneration air stream temperature. The thus heated regeneration air stream is then passed through another segment of the rotating desiccant wheel to regenerate the wheel and is exhausted to the atmosphere. | 12-09-2010 |
20110000235 | REFRIGERATOR WITH MOISTURE ADSORBING DEVICE - The present invention relates to a refrigerator or freezer having a cabinet forming at least a freezer compartment, at least one door for opening and closing the cabinet, and an adsorbing device containing a desiccant material for collecting moisture from air inside the cabinet, wherein the adsorbing device is mounted inside the cabinet. | 01-06-2011 |
20110056220 | PH2OCP - portable water and climatic production system - The present invention “PH | 03-10-2011 |
20110079028 | WATER-FROM-AIR SYSTEM USING A DESICCANT WHEEL - A water-from-air extraction system ( | 04-07-2011 |
20110079029 | AIR CONDITIONER AND METHOD FOR CONTROLLING OF AIR CONDITIONER - An air conditioner includes first and second air passages, first and desiccant devices, a system heat source, a heat supplier, a system heat source temperature sensor, an airflow controller and a controller. The first and second air passages are communicable with a space to be air conditioned. The first desiccant device disposing in the first air passage has a first desiccant material. The second desiccant device disposed in the second air passage has a second desiccant material whose temperature for regeneration is higher than the temperature for regeneration of the first desiccant material. The heat supplier supplies heat generated by the system heat source to the first desiccant device for regenerating the first desiccant material. The airflow controller regulates airflow in the first and second air passages. The controller controls the airflow controller based on the temperature of the system heat source detected by the system heat source temperature sensor. | 04-07-2011 |
20110088417 | Energy Recovery Ventilator And Dehumidifier - An energy recovery ventilator system includes a belt partially located in each of a first chamber and a second chamber. First and second desiccant units are positioned on the belt. At least some of the first desiccant units are in the first chamber at a first relative humidity, causing air received in the first chamber to achieve a first air humidity. At least some of the second desiccant units are in the second chamber at a second relative humidity, the second relative humidity being caused by the air received in the first chamber. The second relative humidity is modified to the first relative humidity by air passing through the second chamber, the air achieving a second air humidity. A controller causes the belt to move second desiccant units from the second chamber to the first chamber when the first air humidity fails to comply with a specific air humidity. | 04-21-2011 |
20110296858 | PH2OCP PORTABLE WATER AND CLIMATIC PRODUCTION SYSTEM - The present invention relates to a portable water and climatic production system (“PH | 12-08-2011 |
20120060524 | AIR CONDITIONER HAVING AN AIR DEHUMIDIFYING DEVICE AND METHOD FOR OPERATING SUCH AN AIR CONDITIONER - An aircraft air conditioning system has a fresh air line connected to a fresh air inlet for supplying fresh air to the air conditioning system and a sorption device disposed in the fresh air line which contains a sorbent for taking up moisture from the fresh air flowing through the fresh air line. The sorption device is adapted to expose the sorbent contained in the sorption device to ambient pressure surrounding an aircraft carrying the aircraft air conditioning system when the aircraft is flying for the purpose of regeneration of the sorbent. The sorption device is thermally connectable to a heat source that is adapted, when the aircraft is flying and while the sorbent contained in the sorption device is exposed to the ambient pressure, to supply thermal energy from the heat source to the sorbent contained in the sorption device for the purpose of assisting the regeneration. | 03-15-2012 |
20120117987 | SYSTEM AND METHOD FOR EFFICIENT AIR DEHUMIDIFICATION AND LIQUID RECOVERY WITH EVAPORATIVE COOLING - The present invention relates to systems and methods for dehumidifying air by establishing humidity gradients in one or more dehumidification units. Water vapor from relatively humid atmospheric air entering the dehumidification units is extracted by the dehumidification units without substantial condensation into low pressure water vapor vacuum volumes. For example, in one embodiment, the water vapor is extracted through water vapor permeable membranes of the dehumidification units into the low pressure water vapor vacuum volumes. As such, the air exiting the dehumidification units is less humid than the air entering the dehumidification units. The low pressure water vapor extracted from the air is compressed to a slightly higher pressure, condensed, and removed from the system at ambient conditions. In addition, each of the dehumidification units may be associated with one or more evaporative cooling units through which the air will be directed, with the evaporative cooling units being upstream and/or downstream of the dehumidification units. In one embodiment, the dehumidification units function to reduce the humidity ratio and temperature to desired final conditions by iteratively approaching an ideal humidity ratio versus temperature curve. | 05-17-2012 |
20120125020 | METHODS AND SYSTEMS FOR DESICCANT AIR CONDITIONING USING PHOTOVOLTAIC-THERMAL (PVT) MODULES - Methods and systems are provided for air conditioning, capturing combustion contaminants, desalination, and other processes using liquid desiccants. | 05-24-2012 |
20120125021 | DESICCANT AIR CONDITIONING METHODS AND SYSTEMS USING EVAPORATIVE CHILLER - Methods and systems are provided for air conditioning, capturing combustion contaminants, desalination, and other processes using liquid desiccants. | 05-24-2012 |
20120131934 | WATER RECOVERY METHODS AND SYSTEMS - Methods and systems are provided for air conditioning, capturing combustion contaminants, desalination, and other processes using liquid desiccants. | 05-31-2012 |
20130145779 | ABSORPTION TYPE AIR DRYING SYSTEM AND METHOD OF PERFORMING HEATING REGENERATION OF THE SAME - This invention relates to an absorption type air drying system which can maximize energy efficiency, and to a method of controlling the same. This absorption type air drying system includes first and second adsorption towers, first diverter valves provided below the first and second adsorption towers to change the direction of transport of dehumidification air and regeneration air and including first to fourth on-off valves, second diverter valves provided above the adsorption towers to change the direction of transport of dehumidification air and regeneration air and including fifth to eighth on-off valves, and regeneration diverter valves connected to the first and second diverter valves to circulate the regeneration air and including ninth and tenth on-off valves which are opened upon heating regeneration, and eleventh and twelfth on-off valves which are opened upon cooling regeneration. | 06-13-2013 |
20130186117 | SYSTEM AND METHOD TO PROCESS INLET AIR - A system to process inlet air includes a dehumidifying portion configured to dehumidify the inlet air. The system also includes a chilling portion configured to cool the inlet air, and bypass louvers configured to open and close, the bypass louvers being open to channel the inlet air to the chilling portion when the dehumidifying portion is not operational. A control portion of the system is configured to operate the bypass louvers. | 07-25-2013 |
20130186118 | DEHUMIDIFICATION SYSTEM - A dehumidification system is disclosed including a regeneration air flow path, a process air flow path, and a recirculation air flow path. In one embodiment, the regeneration air flow path includes a regeneration fan and a refrigeration system having an evaporator coil upstream of a condenser coil. The system also includes a desiccant wheel partially disposed within the process air flow path and partially disposed in the regeneration air flow path downstream of the refrigeration system. The recirculation air flow path is in fluid communication with the regeneration air flow path downstream of the regeneration fan at an inlet and upstream of the refrigeration system at an outlet. The recirculation air flow path is arranged to allow for an air flow to be recirculated through the refrigeration system and the desiccant wheel by the regeneration fan. A heat exchanger may also be provided in the regeneration air flow path. | 07-25-2013 |
20130255287 | METHOD AND APPARATUS FOR CONDITIONING AIR - An apparatus and a method for conditioning air has a quantity of liquid desiccant. A first portion of a first airflow is received in a first contact volume such that it contacts a first portion of the liquid desiccant. A second contact volume is in parallel with the first contact volume and receives a second portion of the first airflow. At least a portion of a second airflow is brought into contact with a second portion of the liquid desiccant in a third contact volume. A first heat exchanger is associated with the first portion of the liquid desiccant and configured to transfer heat between the first portion of the liquid desiccant and a first medium. A second heat exchanger is associated with the second portion of the liquid desiccant and configured to transfer heat between the second portion of the liquid desiccant and a second medium. | 10-03-2013 |
20130298580 | DESICCANT DEHUMIDIFICATION SYSTEM WITH CHILLER BOOST - A hybrid dehumidification system for controlling the humidity and/or both humidity and temperature in a space includes a cooling coil for first cooling, or cooling and reducing the humidity of, an airstream to be supplied to the space with an aqueous cooling medium, passing the thus cooled airstream through a desiccant adsorption means to further reduce the humidity of the airstream before supplying the airstream to the space, and regenerating the desiccant adsorption means by heating the desiccant with waste heat from a heat pump used to further cool the first aqueous cooling medium. | 11-14-2013 |
20130319022 | SURFACE TREATMENTS FOR DESSICANT MEDIA IN A WATER RECOVERY DEVICE - A system and method recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection. | 12-05-2013 |
20130319023 | METHOD FOR WATER RECOVERY FROM ATMOSPHERE - A method to recover water from the atmosphere is provided. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection. | 12-05-2013 |
20140150481 | METHODS AND SYSTEMS FOR COOLING BUILDINGS WITH LARGE HEAT LOADS USING DESICCANT CHILLERS - A system for providing cooling to a building includes a cooling tower for transferring waste heat from the building to the atmosphere and a liquid desiccant system for dehumidifying an air stream entering the cooling tower to increase cooling efficiency of the cooling tower. The liquid desiccant system includes a conditioner and a regenerator. The conditioner utilizes a liquid desiccant for dehumidifying the air stream entering the cooling tower. The regenerator is connected to the conditioner for receiving dilute liquid desiccant from the conditioner, concentrating the dilute liquid desiccant using waste heat from the building, and returning concentrated liquid desiccant to the conditioner. | 06-05-2014 |
20140238057 | REGENERATION AIR MIXING FOR A MEMBRANE BASED HYGROSCOPIC MATERIAL DEHUMIDIFICATION SYSTEM - A contactor for an air temperature and humidity control device is provided including a plurality of contact modules. Each contact module has a generally porous sidewall configured to define an internal space through which a hygroscopic material flows. A first airstream passes over a first portion of the plurality of contact modules. A second airstream passes over a second portion of the plurality of contact modules. | 08-28-2014 |
20140260372 | CONTROL METHODS AND SYSTEMS FOR INDIRECT EVAPORATIVE COOLERS - A control method for operating an indirect evaporative cooler to control temperature and humidity. The method includes operating an airflow control device to provide supply air at a flow rate to a liquid desiccant dehumidifier. The supply air flows through the dehumidifier and an indirect evaporative cooler prior to exiting an outlet into a space. The method includes operating a pump to provide liquid desiccant to the liquid desiccant dehumidifier and sensing a temperature of an airstream at the outlet of the indirect evaporative cooler. The method includes comparing the temperature of the airstream at the outlet to a setpoint temperature at the outlet and controlling the pump to set the flow rate of the liquid desiccant. The method includes sensing space temperature, comparing the space temperature with a setpoint temperature, and controlling the airflow control device to set the flow rate of the supply air based on the comparison. | 09-18-2014 |
20140260373 | VARIABLE DESICCANT CONTROL ENERGY EXCHANGE SYSTEM AND METHOD - Embodiments of the present disclosure provide a system and method for providing conditioned air to at least one enclosed structure. The system may include at least one conditioning module configured to provide conditioned air to the at least one enclosed structure. The conditioning module(s) may include a conditioning energy exchanger. The conditioning module(s) is configured to circulate desiccant through a desiccant circuit to condition air passing through the conditioning energy exchanger. The conditioning module(s) may be configured to receive at least one of concentrated desiccant or diluted desiccant in order to vary temperature or concentration of the desiccant circulating through the desiccant circuit. | 09-18-2014 |
20150128625 | Temperature Modulated Desiccant Evaporative Cooler and Indirect and Direct Evaporative Air Conditioning Systems, Methods, and Apparatus - A method is disclosed for supplying air conditioned air to a residence or building interior. The method entails positioning a heat and mass exchanger to discharge conditioned air into the residence or building interior. Further, a rotatable desiccant wheel dehumidifier in positioned in fluid communication with the heat and mass exchanger. Supply air is received and treated in the dehumidifier, thereby supplying dry air to the heat and mass exchanger and exhausting hot humid air. The heat and mass exchanger is positioned and configured to received dry air from the dehumidifier and supply cooler dry air to the residence or building interior, or other target environment. A system is also disclosed for operating the described air supplying or air conditioning method. | 05-14-2015 |
20150292754 | AIR CONDITIONING METHOD USING A STAGED PROCESS USING A LIQUID DESICCANT - In a process and apparatus of conditioning an airstream, the airstream is contacted with a liquid desiccant absorber in each of at least two stages. The same apparatus is used as an evaporator to reconcentrate the desiccant. The desiccant for each said stage is cooled or heated externally to the absorber or evaporator using an external source of cooling supplied with a common cooling or heating fluid at each stage. The desiccant flows between the stages counter-current to the flow of the airstream such that at each step the concentration of the desiccant is reduced or increased by contact with the airstream so that the concentration in each stage is distinct from the concentration of the desiccant in the previous stages. | 10-15-2015 |
20150323203 | VARIABLE DESICCANT CONTROL ENERGY EXCHANGE SYSTEM AND METHOD - Embodiments of the present disclosure provide a system and method for providing conditioned air to at least one enclosed structure. The system may include at least one conditioning module configured to provide conditioned air to the at least one enclosed structure. The conditioning module(s) may include a conditioning energy exchanger. The conditioning module(s) is configured to circulate desiccant through a desiccant circuit to condition air passing through the conditioning energy exchanger. The conditioning module(s) may be configured to receive at least one of concentrated desiccant or diluted desiccant in order to vary temperature or concentration of the desiccant circulating through the desiccant circuit. | 11-12-2015 |
20160109143 | DEVICE AND METHOD FOR EXTRACTING VARIOUS COMPONENTS FROM AMBIENT AIR OR FROM A VAPOR-GAS MIXTURE, AND A SYSTEM FOR COOLING AIR, HEATING AIR, DESALINATION OF WATER AND/OR PURIFICATION OF WATER - Device for removing moisture and/or another substance from ambient air or from a gas, the device being configured to operate alternately in an adsorption phase and a desorption phase. The device comprises a vessel comprising an entry and an exit which comprise valves allowing the exit and entry to be opened and closed and a body of adsorption material positioned inside the vessel dividing the inside of the vessel in an upstream region and a downstream region. The device further comprises a condenser loop comprising a condenser located outside the vessel, a branch conduit which extends from the vessel to the condenser and which allows a branch flow of air or gas to flow from the downstream region to the condenser, and a condenser return conduit which extends from the condenser to the vessel and which allows the branch flow to return from the condenser to the upstream region of the vessel. The device further comprises at least one main return conduit for returning a main return flow of air or gas from the downstream region to the upstream region while bypassing the condenser. | 04-21-2016 |
20160123610 | HVAC SYSTEMS AND METHODS WITH IMPROVED HUMIDITY REGULATION - Systems, devices, and methods are presented for using a liquid desiccant to regulate a moisture content of air conditioned by a heating, ventilating, and air conditioning (HVAC) system. The liquid desiccant is disposed within a processing volume, which is substantially-enclosed and substantially segregates the liquid desiccant from the conditioned air. A pair of vapor-permeable membranes define opposite surfaces of the processing volume. Water vapor diffuses through the vapor-permeable membranes, thereby enabling an exchange of moisture between the liquid desiccant and the conditioned air. The refrigerant circuit itself is used to cool desiccant in the absorber and heat desiccant in the desorber. Other systems, devices, and methods are presented. | 05-05-2016 |
20160129763 | Method of Controlling a Climate Control System - A method of controlling a climate control system. The method may include positioning a valve to block airflow from a desiccant to a port, permit airflow from the port to a blower, and circulate air through the desiccant and then through a trim component. The valve may be disposed between the port and the blower. The desiccant may be disposed between the blower and the valve. | 05-12-2016 |
20190145638 | HIGH VOLUME AIR STREAM WATER RECOVERY SYSTEM | 05-16-2019 |
20190145639 | METHODS AND APPARATUS FOR UNIFORM DISTRIBUTION OF LIQUID DESICCANT IN MEMBRANE MODULES IN LIQUID DESICCANT AIR-CONDITIONING SYSTEMS | 05-16-2019 |
20190145640 | METHODS AND SYSTEMS FOR LIQUID DESICCANT AIR CONDITIONING | 05-16-2019 |
20190145643 | LOAD FOLLOWER AND LOAD ANTICIPATOR FOR A LIQUID DESICCANT AIR CONDITIONING SYSTEM | 05-16-2019 |
20220136715 | Device for Continuous and Efficient Water Absorption and Regeneratation of Desiccant, an Air Cooler, and a Method for Controlling Such a Device - The present invention relates to a device for absorbing water using a liquid desiccant and the regeneration of said liquid desiccant by evaporating the absorbed water. The device may further be used in an air cooler. The invention also relates to a method for controlling a device for absorbing water. | 05-05-2022 |