| Patents for F25B 30 - Heat pumps (6,899) |
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| 03/24/1998 | US5729992 Refrigerant charge control system for heat pump |
| 03/19/1998 | DE19637821A1 Wärmetauschverfahren und Wärmetauscher Heat exchange processes and heat exchanger |
| 03/04/1998 | EP0826935A2 Heat pump |
| 02/25/1998 | EP0824659A1 Heat pump system and method for air-conditioning |
| 01/13/1998 | US5706888 Geothermal heat exchanger and heat pump circuit |
| 12/23/1997 | US5699668 Multiple electrostatic gas phase heat pump and method |
| 11/20/1997 | DE19619793A1 Heat recovery unit using a heat pump |
| 11/19/1997 | CN1165280A Heat pump ice water machine device |
| 11/12/1997 | EP0805942A2 Apparatus and method for the transfer of heat with the aid of air |
| 10/22/1997 | CN1162730A Heat pump drived by engine |
| 10/07/1997 | US5673569 Double effect absorption cold or hot water generating machine |
| 10/07/1997 | US5673566 Heat pump and refrigeration system |
| 09/30/1997 | US5671608 Geothermal direct expansion heat pump system |
| 09/28/1997 | CA2172790A1 Direct expansion source heat pump |
| 09/24/1997 | CN1160171A Heat pump unit for air conditioning |
| 09/23/1997 | US5669224 Direct expansion ground source heat pump |
| 09/10/1997 | CN1158973A Heat pump system driven by engine |
| 09/09/1997 | CA2166632A1 Anti-flood protection feature for "heat pump" pool heaters |
| 09/02/1997 | CA1339394C Heat pumps |
| 08/14/1997 | DE19604356A1 Heat recovery from solar energy by thermal absorber in closed circuit |
| 08/13/1997 | CN1156812A Heat pump system |
| 08/13/1997 | CN1156811A Heat pump system driven by engine |
| 08/13/1997 | CN1156808A 热泵式空气调节器 Heat pump air conditioner |
| 08/12/1997 | CA2059815C Heat pump |
| 07/29/1997 | US5651265 Ground source heat pump system |
| 07/17/1997 | DE19600673A1 Heat pump for open-air swimming pools |
| 07/09/1997 | CN1153887A 热泵 Pump |
| 06/04/1997 | EP0603199B1 Dual temperature heat pump apparatus |
| 06/03/1997 | US5634515 Geothermal heat-pump system and installation of same |
| 05/13/1997 | US5628199 In a heat pump system |
| 05/01/1997 | WO1997015788A1 Method and device for heating with the aid of a heat pump |
| 04/30/1997 | DE19642702A1 Heat pump installation for heating and hot water in buildings |
| 04/30/1997 | DE19540017A1 Heat pump using environmentally acceptable working medium for use in air conditioning |
| 04/30/1997 | DE19540000A1 Verfahren und Einrichtung zum Heizen mit Hilfe einer Wärmepumpe Method and apparatus for heating using a heat pump |
| 04/08/1997 | US5617738 Energy converter |
| 04/08/1997 | US5617733 Absorbing type water cooling-heating apparatus |
| 03/20/1997 | WO1997010480A1 Apparatus and method for installing a pipe in a wellbore |
| 03/13/1997 | WO1997009574A1 Method and apparatus of an hydraulic heat pump |
| 03/12/1997 | EP0762064A1 Refrigerant flow control for a heat pump and method |
| 03/01/1997 | CA2157054A1 Heat pump system |
| 02/12/1997 | CN1142593A Heat pump air conditioner with circulation fluid by-pass path |
| 01/08/1997 | EP0680588B1 Absorption heat pump and refrigeration system |
| 01/07/1997 | US5590715 Underground heat exchange system |
| 12/03/1996 | US5579652 Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pump |
| 11/06/1996 | CN1135255A Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in heat pump |
| 10/24/1996 | WO1996033378A1 Heat pump system and method for air-conditioning |
| 10/15/1996 | US5564282 Variable capacity staged cooling direct expansion geothermal heat pump |
| 10/09/1996 | CN1132846A Double effect absorption cold or hot water generaing machine |
| 10/08/1996 | US5561985 Heat pump apparatus including earth tap heat exchanger |
| 09/26/1996 | WO1996023188A3 Apparatus and method for the transfer of heat with the aid of air |
| 09/24/1996 | US5558273 Space conditioning system for a building |
| 09/10/1996 | CA2171373A1 Biothermal and geothermal heat exchange apparatus for a ground source heat pump |
| 08/14/1996 | EP0726426A1 Method for the optimized operation of solar panels |
| 08/14/1996 | EP0725919A1 Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pump |
| 08/14/1996 | CN1128842A Energy conversion mechanism |
| 08/01/1996 | WO1996023188A2 Apparatus and method for the transfer of heat with the aid of air |
| 06/13/1996 | DE4443204A1 Heat transport system for central heating or underfloor heating using steam |
| 05/29/1996 | EP0535106B1 Method of transferring heat from a low to a higher temperature |
| 05/28/1996 | US5520008 Centrifugal compressor and heat pump comprising |
| 04/23/1996 | US5509274 High efficiency heat pump system |
| 04/17/1996 | EP0604417B1 Control of high-side pressure in transcritical vapor compression cycle |
| 03/27/1996 | EP0703420A2 Energy converter |
| 03/26/1996 | US5501088 Exhaust gas discharge system for a gas engine heat pump |
| 03/07/1996 | WO1996007062A1 Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pump |
| 03/07/1996 | CA2174865A1 Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pump |
| 02/06/1996 | CA2033240C Heat condensing furnace with de-intensifier tubes |
| 01/16/1996 | CA2128178A1 Ground source heat pump system |
| 01/11/1996 | WO1996000874A1 Combined ambient-air and earth exchange heat pump system |
| 12/12/1995 | US5473910 Apparatus and method for exhaust gas dispersion and condensate removal for gas engine driven heat pumps |
| 12/12/1995 | US5473907 Heat pump with supplementary heat |
| 11/30/1995 | WO1995032365A1 Power unit for high efficiency heat pump system |
| 11/08/1995 | EP0680588A1 Improvements relating to absorption refrigerators. |
| 11/07/1995 | US5463868 Heat pumping method as well as heat pump for generating cryogenic temperatures |
| 10/31/1995 | US5461876 Combined ambient-air and earth exchange heat pump system |
| 08/08/1995 | US5438846 Heat-pump with sub-cooling heat exchanger |
| 08/08/1995 | US5438844 Microprocessor-based controller |
| 07/04/1995 | US5429179 Gas engine driven heat pump system having integrated heat recovery and auxiliary components |
| 06/22/1995 | WO1995016885A1 Heat plant |
| 05/24/1995 | DE4339547A1 Photovoltaic electricity generation by solar cells |
| 05/24/1995 | DE4339215A1 Temperature control of bakery store room |
| 05/23/1995 | US5417084 Heat exchanger; depressurized vapor generator; pan evaporator with steam jacket; heat efficiency, stability |
| 05/09/1995 | US5413728 Process for operating a compressor heat pump or a compressor refrigeration system in which ammonia is used as the refrigerant |
| 03/09/1995 | DE4431887A1 Heat pump installation (system) |
| 03/08/1995 | CN2191396Y Air-conditioner with thermodynamic heat pump |
| 03/04/1995 | CA2105508A1 Simplified, low cost absorption heat pump |
| 02/14/1995 | US5388419 Staged cooling direct expansion geothermal heat pump |
| 01/04/1995 | EP0631799A1 Vacuum concentrating plant |
| 12/06/1994 | US5370307 Air conditioner having high heating capacity |
| 11/10/1994 | DE4314509A1 Method and means for producing an improved heat pump |
| 11/01/1994 | US5360057 Dual-temperature heat pump apparatus and system |
| 10/24/1994 | CA2122100A1 Direct expansion heat pump |
| 10/04/1994 | US5351501 Method of transferring heat energy from a low to a higher temperature |
| 09/29/1994 | DE4405991C1 Arrangement for obtaining heat energy |
| 09/25/1994 | CA2092331A1 Method and means for producing improved heat pump system |
| 08/23/1994 | US5339890 Ground source heat pump system comprising modular subterranean heat exchange units with concentric conduits |
| 08/10/1994 | EP0609395A1 Ancillary heat pump apparatus for producing domestic hot water |
| 08/04/1994 | WO1994017343A1 Improvements relating to absorption refrigerators |
| 07/06/1994 | EP0604417A1 Method of high-side pressure regulation in transcritical vapor compression cycle device. |
| 07/05/1994 | US5325683 Heat pump apparatus |
| 06/29/1994 | EP0603199A1 Dual-temperature heat pump apparatus and system. |