Patent application number | Description | Published |
20100070088 | AIR-CONDITIONING ALGORITHM FOR WATER TERMINAL FREE COOLING - A building air conditioning system control scheme to optimize water terminal capacity and create energy savings by utilizing a building management system signal to run in a mode that maximizes the conditions of the outside air to condition their local zones and potentially require no thermal pre-treatment of outside air by an air handling unit. | 03-18-2010 |
20110113797 | METHODS AND SYSTEMS FOR COMPRESSOR OPERATION - There is provided a refrigeration system ( | 05-19-2011 |
20110209490 | CONTROL OF MULTIPLE ZONE REFRIGERANT VAPOR COMPRESSION SYSTEMS - A refrigerant vapor compression system and a method of controlling the system are adapted for controlling the distribution of cooling capacity between two or more temperature controlled zones. | 09-01-2011 |
20140137580 | Method And System For Transport Container Refrigeration Control - A method of refrigeration control through a refrigeration system of a refrigerated transport container includes performing a defrost cycle on the refrigeration system by activating a heat source; and restarting the refrigeration system after the defrost cycle has completed, wherein restarting the refrigeration system includes performing a liquid slugging avoidance process including: initiating a compressor of the refrigeration system at a speed; opening a pressure equalization valve in parallel with the compressor in response to the initiating; opening a liquid valve in series between a condenser and an evaporator after opening of the pressure equalization valve; and closing the pressure equalization valve after a period of time. | 05-22-2014 |
20140305147 | System And Method For Cooling A Compartmentalized Refrigeration Enclosure - A refrigeration enclosure comprises a cargo box with a partition wall that subdivides the cargo box into compartments. In one embodiment, the refrigeration enclosure includes a refrigeration system with a refrigeration unit for cooling one of the compartments and an air moving device disposed proximate the partition wall to facilitate airflow from the first compartment to the second compartment. The refrigeration system further comprises a control device coupled to each of the air moving device and the refrigeration unit. The control device provides control signals that vary the operation of each of the air moving device and the refrigeration unit in response to variations in the operating conditions (e.g., temperature) inside each of the compartments. | 10-16-2014 |
Patent application number | Description | Published |
20100036530 | AIR CONDITIONING SYSTEMS AND METHODS HAVING FREE-COOLING PUMP STARTING SEQUENCES - An air conditioning system having a cooling mode and a free-cooling mode is provided. The system includes a refrigeration circuit, two pressure sensors, a controller, and a pump starting sequence resident on the controller. The refrigeration circuit includes a compressor and a pump. The first pressure sensor is at an inlet of the pump, while the second pressure sensor is at an outlet of the pump. The controller selectively operates in the cooling mode by circulating and compressing a refrigerant through the refrigeration circuit via the compressor or operates in the free-cooling mode by circulating the refrigerant through the refrigeration circuit via the pump. The pump starting sequence cycles the pump between an on state and an off state based at least upon a differential pressure determined by the controller from pressures detected by the pressure sensors. | 02-11-2010 |
20100036531 | METHODS AND SYSTEMS FOR CONTROLLING AIR CONDITIONING SYSTEMS HAVING A COOLING MODE AND A FREE-COOLING MODE - A method of controlling an air conditioning system having a cooling mode and a free-cooling mode, including activating the air conditioning system; measuring a first temperature of ambient air surrounding a condenser; measuring a second temperature of the working fluid; calculating a difference between the first and second temperatures; and comparing the difference to a predetermined value, wherein if the difference is greater than or equal to the predetermined value the free-cooling mode is activated, and wherein if the difference is less than the predetermined value the cooling mode is activated. | 02-11-2010 |
20100050669 | AIR CONDITIONING SYSTEMS AND METHODS HAVING FREE-COOLING PUMP-PROTECTION SEQUENCES - An air conditioning system having a cooling mode and a free-cooling mode is provided. The system includes a refrigeration circuit, two pressure sensors, a controller, and a pump-protection sequence resident on the controller. The refrigeration circuit includes a compressor and a pump. The first pressure sensor is at an inlet of the pump, while the second pressure sensor is at an outlet of the pump. The controller selectively operates in the cooling mode by circulating and compressing a refrigerant through the refrigeration circuit via the compressor or operates in the free-cooling mode by circulating the refrigerant through the refrigeration circuit via the pump: The pump-protection sequence turns the pump to an off state based at least upon a differential pressure determined by the controller from pressures detected by the first and second pressure sensors. | 03-04-2010 |
20100070082 | METHODS AND SYSTEMS FOR CONTROLLING AN AIR CONDITIONING SYSTEM OPERATING IN FREE COOLING MODE - A method of controlling an air conditioning system having a cooling mode and a free-cooling mode, including activating the air conditioning system; measuring a first temperature of ambient air surrounding a condenser, measuring a second temperature of the working fluid; calculating a difference between the first and second temperatures; and comparing the difference to a predetermined value, wherein if the difference is greater than or equal to the predetermined value the free-cooling mode is activated, and wherein if the difference is less than the predetermined value the cooling mode is activated. | 03-18-2010 |
20100094465 | METHODS AND SYSTEMS FOR CONTROLLING AIR CONDITIONING SYSTEMS HAVING A COOLNIG MODE AND A FREE-COOLING MODE - An air conditioning system having a cooling mode and a free-cooling mode. The system having a refrigeration circuit having a compressor and a pump; a suction pressure sensor for measuring a suction pressure of the compressor; a discharge pressure sensor for measuring a discharge pressure of the compressor; a controller for selectively operating in the cooling mode by circulating and compressing a refrigerant through the refrigeration circuit via the compressor or operating in the free-cooling mode by circulating the refrigerant through the refrigeration circuit via the pump; and a recover-refrigerant sequence resident on the controller, the recover-refrigerant sequence being configured to pump the refrigerant in a portion of the refrigeration circuit not used in the free-cooling mode to remaining portions of the refrigeration circuit used in the free-cooling mode when the controller switches from the cooling mode to the free-cooling mode. | 04-15-2010 |
Patent application number | Description | Published |
20100282834 | FLUID PROCESSING MEDICAL APPARATUS AND METHOD FOR SETTING-UP A FLUID PROCESSING MEDICAL APPARATUS - The invention relates to a method for setting up a fluid treatment apparatus using a single, and always accessible, reader of information relating to replaceable components which are to be mounted on the apparatus to perform the fluid treatment. It is also disclosed a fluid treatment apparatus having the always accessible reader. The reader can also be relied on to enter information other that those relating to the replaceable components, such as commands for the apparatus, patients' related information, etcetera. | 11-11-2010 |
20130062404 | FLUID PROCESSING MEDICAL APPARATUS AND METHOD FOR SETTING-UP A FLUID PROCESSING MEDICAL APPARATUS - The invention relates to a method for setting up a fluid treatment apparatus using a single, and always accessible, reader of information relating to replaceable components which are to be mounted on the apparatus to perform the fluid treatment. It is also disclosed a fluid treatment apparatus having the always accessible reader. The reader can also be relied on to enter information other that those relating to the replaceable components, such as commands for the apparatus, patients' related information, etcetera. | 03-14-2013 |
20130338560 | METHOD AND APPARATUS FOR DETERMINING ACCESS FLOW - A method and apparatus for determining a fluid flow rate in a blood access having an upstream position and a downstream position using a dialysis system. The dialysis system includes a dialyzer having a semi permeable membrane delimiting a first chamber through which blood removed from said blood access passes, and a second chamber through which dialysis liquid passes. In addition, an arterial line and a venous line are connected to an inlet and an outlet of the first chamber, respectively. | 12-19-2013 |