| Patents for F25B 30 - Heat pumps (6,899) |
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| 05/25/2000 | DE19955339A1 Hot water supply system has hot water producing fluid, and heated coolant flowing in opposite direction in heat exchanger; water heated by coolant on high pressure side is stored in tank |
| 05/17/2000 | CN2378670Y Cool and heat accumulation hot pump air conditioner |
| 05/11/2000 | DE19839867A1 Heat pump for buildings has ice making and storage unit using water and glycol fluid medium to separate ice sheet from evaporator plate |
| 05/09/2000 | US6058719 Heat pump apparatus having refrigerant level indication and associated methods |
| 05/03/2000 | CN2376603Y Quick defrosting air conditioner |
| 04/18/2000 | US6050102 Heat pump type air conditioning apparatus |
| 04/12/2000 | CN1250145A Thermal pump |
| 03/30/2000 | DE19844246A1 Application of heat pump employing absorption principle with lithium bromide working solution, exploits low temperature steam to reduce energy consumption |
| 03/28/2000 | US6041862 Ground heat exchange system |
| 03/28/2000 | US6041613 Energy conserving heat pump system |
| 03/01/2000 | CN2366801Y Air cooling heat pump refrigeration system using plate type exchanger |
| 02/23/2000 | CN1245266A Changing-over valve, fluid compressor and heat pump type refrigerating circulation |
| 02/16/2000 | CN1244650A Control of evaporator defrosting in pneumatic heat pump device |
| 02/01/2000 | US6018954 Heat pump system and method for air-conditioning |
| 01/27/2000 | DE19835084A1 Refrigeration or heat pump circuit for cooling or heating system has spaced-apart flow paths formed between inlet and outlet points on evaporation container |
| 01/27/2000 | DE19832682A1 Defrosting unit for evaporator of heat pump of air conditioner has line connecting one expansion valve to second expansion valve |
| 01/12/2000 | CN1240919A Absorption heat pump unit and its running method |
| 01/11/2000 | CA2178981C Heat exchanger and heat pump circuit |
| 01/05/2000 | CN1240266A Both heat pump and ice-water machine system equipment |
| 12/29/1999 | EP0967447A1 Heat pump system |
| 12/29/1999 | CN2356279Y Heat pump type refrigerator for outdoor machine of air conditioner |
| 12/29/1999 | CN1239769A Apparatus and method of operating heat pump to improve heating supply air temperature |
| 12/23/1999 | DE19827474A1 Heat machine, e.g. cooling device, heating device or motor for producing mechanical energy |
| 12/21/1999 | CA2073106C High efficiency heat exchanger |
| 12/08/1999 | EP0962715A2 Apparatus and method of operating a heat pump to improve heating supply air temperature |
| 12/02/1999 | WO1999061849A1 Geothermal heat pump system |
| 12/02/1999 | DE19820818A1 Heat pump with compact construction of heat and insulation housing |
| 11/16/1999 | US5983660 Defrost subcircuit for air-to-air heat pump |
| 11/10/1999 | EP0955712A1 Method for removing power loss |
| 10/21/1999 | DE19851889A1 Heat pump/air conditioning plant for buildings |
| 10/20/1999 | CN1232155A Air conditioner |
| 09/23/1999 | DE19812495A1 Method for optimizing the performance of absorption heat pump or refrigeration systems |
| 09/16/1999 | DE19810725A1 Method for cooling rooms in high ambient temperature conditions |
| 09/08/1999 | CN2337481Y Steam-water counterflow pump |
| 09/08/1999 | CN1227906A Air conditioner |
| 09/07/1999 | US5946928 Mini tube and direct expansion heat exchange system |
| 08/26/1999 | WO1999042768A1 Heat pump having improved defrost system |
| 08/26/1999 | WO1999042767A1 System for the thermal compensation of an air-conditioning unit with heat pump |
| 08/26/1999 | WO1999042538A1 Heat pumps using organometallic liquid absorbents |
| 08/17/1999 | US5937665 Geothermal subcircuit for air conditioning unit |
| 08/11/1999 | CN2332943Y Air cooling heat pump whole-year cold/hot water set |
| 07/08/1999 | DE19820379C1 Regenerative use of power loss of at least one heavy current cable |
| 07/07/1999 | EP0927326A1 Heat transferring method and heat exchanger |
| 07/07/1999 | CN2327960Y Heat pump air conditioner with plurality of inner units |
| 06/16/1999 | CN2324501Y Regulator for electronic heat pump |
| 06/09/1999 | EP0857282B1 Method and device for heating by means of a heat pump |
| 06/02/1999 | CA2255181A1 Integrated system for heating, cooling and heat recovery ventilation |
| 05/26/1999 | EP0725919B1 Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pump |
| 05/26/1999 | CN2320961Y Jet-type refrigerant cold-storage device |
| 05/20/1999 | WO1999024765A1 Heat exchanger for water heater using heat pump |
| 05/20/1999 | WO1999024764A1 Heat exchanger for water heater using heat pump |
| 05/19/1999 | CN2319760Y Thermal pump air conditioner |
| 05/11/1999 | US5901566 Heat pump |
| 05/11/1999 | CA2056325C Air-conditioning apparatus |
| 04/29/1999 | DE19751178A1 Geothermal heat utilization process for heating buildings |
| 04/28/1999 | CN2316608Y Air-type heat pump |
| 04/21/1999 | CN1214436A Air conditioner and refrigerant heater outlet temperature control method |
| 04/20/1999 | US5894735 Heat pump system using energy-supplying mechanism to control refrigerant pressure |
| 04/14/1999 | CN2314277Y 多功能热泵 Multifunctional heat pump |
| 03/31/1999 | CN1212352A Heat pump type air conditioning apparatus |
| 03/24/1999 | CN2311735Y Double-effect bromide of lithium first absorption heat pump |
| 03/18/1999 | WO1999013275A1 Multiple electrostatic gas phase heat pump and method |
| 03/03/1999 | CN2309540Y Drying device for heat pump |
| 03/02/1999 | US5875644 Heat exchanger and heat pump circuit |
| 02/17/1999 | CN2308058Y Heat pump type safety water heater |
| 02/17/1999 | CN1208162A Recovery and utilization of cold source energy in thermal power plant |
| 02/16/1999 | CA2028327C Apparatus and process for producing refrigeration and/or heat by solid-gas reaction managed by gravitational heat pipes |
| 01/21/1999 | DE19730699A1 Discontinuous adsorption heat pump operation |
| 01/21/1999 | DE19730698A1 Adsorption heat pump using zeolite heat exchanger |
| 01/21/1999 | DE19730697A1 Adsorption heat pump using zeolite heat exchanger |
| 01/07/1999 | DE19727493A1 Geothermal probe in borehole, for heat pump system |
| 01/06/1999 | CN1204036A Active composite heat pump system |
| 12/30/1998 | EP0887602A1 Heat pump |
| 12/29/1998 | US5852939 Heating and air conditioning device using geothermal heat exchange |
| 12/23/1998 | CN2301678Y Attached cooling and heating device for solar heater |
| 12/08/1998 | US5845502 Heat pump having improved defrost system |
| 11/24/1998 | US5839292 Defroster for heat pump |
| 10/21/1998 | CN1196466A Heat pump type household air conditioner |
| 09/23/1998 | EP0866291A1 Compression heat pump or compression cooling machine and control method therefor |
| 09/23/1998 | CN1193718A Method and apparatus for continuously transferring heat from cold objects to hot objects |
| 09/22/1998 | CA2098680C Microprocessor-based controller |
| 09/15/1998 | US5806331 Water-based hot water heat pump |
| 09/09/1998 | CN2290823Y Automatic defrost heat pump |
| 09/02/1998 | EP0862031A2 Heat pump operating in the heating mode refrigerant pressure control |
| 08/19/1998 | CN1190721A Thermal pump type air conditioner |
| 08/12/1998 | EP0857282A1 Method and device for heating with the aid of a heat pump |
| 07/30/1998 | DE19702416A1 Heat pump plant for heat and hot water supply to buildings |
| 07/21/1998 | US5782101 Heat pump operating in the heating mode refrigerant pressure control |
| 07/01/1998 | EP0851183A2 Refrigeration system |
| 07/01/1998 | CN1186206A Improved water heater |
| 06/30/1998 | US5772113 Two-pipe heat pump system with isolated tank coil for domestic hot water |
| 06/30/1998 | US5771700 Heat pump apparatus and related methods providing enhanced refrigerant flow control |
| 06/17/1998 | CN1184908A High-low pressure switching device in heating-cooling apparatus |
| 06/10/1998 | DE19650183A1 Method for utilising high temperature waste heat in combined heat and power generation |
| 06/02/1998 | US5758724 Underground heat exchange system |
| 06/02/1998 | US5758514 Geothermal heat pump system |
| 05/20/1998 | CN1182475A Heat pump system and method for air-conditioning |
| 03/26/1998 | WO1998012487A1 Heat transferring method and heat exchanger |
| 03/25/1998 | CN2277055Y Forward circulating heat pump |
| 03/24/1998 | US5730208 Biothermal and geothermal heat exchange apparatus for a ground source heat pump |