Patents
Sitemap › F25 - Refrigeration or cooling; Combined heating and refrigeration systems; Heat pump systems; Manufacture or storage of ice; Liquefaction or solidification of gases › F25B - Refrigeration machines, plants, or systems; Combined heating and refrigeration systems; Heat pump systems › F25B 30 - Heat pumps
Patents for F25B 30 - Heat pumps (6,899)
05/1994
05/24/1994US5313874 High efficiency pool heating system and power unit
05/24/1994US5313804 Direct expansion geothermal heat pump
05/18/1994EP0597822A2 Multi-stage apparatus with circulation circuits for working fluids and for absorbing media, and method of operating such an apparatus
05/18/1994CN1086891A Open type heat pump
05/10/1994USRE34600 Energy recovery system for absorption heat pumps
04/1994
04/26/1994US5305614 Ancillary heat pump apparatus for producing domestic hot water
03/1994
03/09/1994EP0585934A1 Method to run a compressor-heatpump or refrigerationplant with ammonia as refrigerant
12/1993
12/21/1993US5271242 Heat pump with heat exchanger air inlet/exhaust duct
11/1993
11/27/1993WO1993024876A1 Fuel-fired heat pump system
11/27/1993CA2112693A1 Fuel-fired heat pump system
11/23/1993US5263892 High efficiency heat exchanger system with glycol and refrigerant loops
11/16/1993US5261251 Hydronic building cooling/heating system
11/09/1993CA1324125C High efficiency heat-exchanger
10/1993
10/19/1993US5253482 Heat pump control system
10/05/1993US5249436 Simplified, low cost absorption heat pump
09/1993
09/22/1993EP0561290A2 Heat pump apparatus
09/07/1993US5241829 Method of operating heat pump
08/1993
08/31/1993US5239838 Heating and cooling system having auxiliary heating loop
08/12/1993DE4203491A1 Heating circuit for building or swimming pool - has combustion engine with exhaust gases and emergent cooling water heating up boiler water via heat exchangers
07/1993
07/22/1993DE4201627A1 Power plant for supplying mains hot water and central heating housing blocks - using environmentally clean high power two-stroke opposed ceramic piston diesel engine driving turbo compressor and generator with cyclone filter and heat pump
07/08/1993CA2086230A1 Non-azeotropic refrigerant mixtures containing r23, r152a and r125
07/06/1993US5224357 Modular tube bundle heat exchanger and geothermal heat pump system
06/1993
06/03/1993DE4234367A1 Heat recovery and heat storage obtained from shutdown mines and brown coal pits - utilising underground and above ground parts of mines and after preparations and survey pipes are laid underground also pipe-rerouting stations with surface access
05/1993
05/27/1993DE4138774A1 Heat pump for building heating system - uses heat exchangers for receiving and transferring heat energy to and from primary and secondary heat transfer mediums
05/13/1993WO1993009386A1 Ancillary heat pump apparatus for producing domestic hot water
05/13/1993CA2121794A1 Ancillary heat pump apparatus for producing domestic hot water
05/04/1993US5207075 Method and means for producing improved heat pump system
04/1993
04/27/1993US5205133 High efficiency pool heating system
04/07/1993EP0535106A1 Method of transferring heat energy from a low to a higher temperature.
04/01/1993WO1993006423A1 Method of high-side pressure regulation in transcritical vapor compression cycle device
03/1993
03/18/1993WO1993005349A1 Dual-temperature heat pump apparatus and system
03/09/1993US5192022 Fuel-fired heat pump system
03/02/1993US5189887 Heat condensing furnace with de-intensifier tubes
02/1993
02/04/1993DE4125535A1 Peltier device producing thermal energy at preselectable temp. - exploits intimate thermal contact between circulation of liq. and surface of element with preset temp. control
02/02/1993US5183100 System for efficiently exchanging heat or cooling ground water in a deep well
01/1993
01/07/1993DE4211576A1 Heating system using heat pump and ground probe - uses heat provided by probe transferred to refrigeration medium via evaporator heat exchanger
12/1992
12/29/1992US5174365 Air conditioning apparatus which selectively carries out a refrigerant collection operation
12/29/1992US5174129 Absorption heat pump
12/16/1992EP0518852A1 Heat pump
12/02/1992CN1066723A Absorptive heat pump
10/1992
10/27/1992US5157937 Rotating adsorption heat pump using thermosyphons for internal heat exchange
10/06/1992CA1308268C Heat pump system
09/1992
09/29/1992CA2064324A1 Cryopump
09/09/1992EP0502609A1 Heat pump
08/1992
08/19/1992EP0499466A2 System for efficiently exchanging heat or cooling ground water in a deep well
08/11/1992US5136855 Heat pump having an accumulator with refrigerant level sensor
07/1992
07/23/1992DE4110481A1 Adsorption type heat pump - has rotating disc divided into compartments filled with zeolite
07/01/1992EP0492168A2 Air-conditioning apparatus
05/1992
05/11/1992CA2061121A1 Heating and cooling system using heat exchanger
05/05/1992US5109677 Supplemental heat exchanger system for heat pump
02/1992
02/04/1992US5085271 Heat accumulation system and method of operating the same
01/1992
01/28/1992US5083607 Devices for producing cold and/or heat by solid-gas reaction managed by gravitational heat pipes
01/21/1992US5081848 Ground source air conditioning system comprising a conduit array for de-icing a nearby surface
01/08/1992EP0464840A2 Mixtures for absorption heat pumps and absorption heat transformators
01/07/1992US5077986 Energy recovery system for absorption heat pumps
12/1991
12/26/1991WO1991019947A1 Method of transferring heat energy from a low to a higher temperature
10/1991
10/22/1991US5058392 Air conditioner heatbox
10/16/1991CN1055421A Falling-film absorption type heat pump
10/15/1991US5056329 Heat pump systems
10/08/1991US5054542 Heat transfer system
09/1991
09/03/1991US5044425 Air conditioner having a refrigerant heater
08/1991
08/22/1991WO1991012474A1 Process and installation for converting waste heat into useful energy
08/22/1991WO1991012471A1 Energy recovery system for absorption heat pumps
08/14/1991EP0441175A2 Process and apparatus for purifying, recovering and recycling hot aqueous degreasing baths and spray washers
08/13/1991US5038850 Cooling and heat accumulating type electric cooling and heating system and a method for implementing the same
08/13/1991US5038580 Heat pump system
08/08/1991DE4003446A1 Producing cold and power from heat-pump - operated with binary fluids to utilise low-grade available heat
07/1991
07/25/1991DE4001851A1 Treating hot aq. degreasing liq. for reuse
07/02/1991US5027616 Air-cooled absorption type cooling and heating apparatus
06/1991
06/25/1991US5025634 Heating and cooling apparatus
06/06/1991DE3939780A1 Heat pump or refrigeration circuit - has crank used to operate offset piston providing asymmetrical movement
06/04/1991US5020320 Engine driven heat pump system
05/1991
05/21/1991US5017130 Burner for a combustion device
05/16/1991DE4035626A1 Cold and heat storage system - has solid storage material between convection preventing layers in storage chamber
05/03/1991CA2022125A1 Heat pump system
05/02/1991WO1991005977A1 A heat pump system having a refrigerant circuit in the form of an exchangeable unit, and means for effecting such an exchange
05/02/1991EP0425368A1 Devices for producing cold and/or heat by solid-gas reaction, managed by gravitational heat pipes
04/1991
04/18/1991CA2038928A1 Heat machine
04/11/1991DE4018936A1 Heat storage system - uses latent heat of melting ice stored in underground tube connected to sump and contg. heat pump evaporator
03/1991
03/19/1991US5000011 Engine driven air conditioning apparatus
02/1991
02/26/1991US4995241 High efficiency heat exchanger
02/19/1991US4993483 Geothermal heat transfer system
02/14/1991DE3925461A1 Medical surface tempering appts. for human or animal - has temp.-producing appts. and applicator for heating or cooling e.g. inflammation or bruise as part of treatment
12/1990
12/25/1990US4979374 Geothermal heat- and water supply plant
11/1990
11/14/1990CN2065746U Hot-tube pump, a new power machine heat transmission device
10/1990
10/02/1990US4959975 Heat pump system
08/1990
08/14/1990US4947930 Heat bonnet for heat pump
08/14/1990CA1272609A1 Heat pumps
08/09/1990WO1990008929A1 Method and device for converting heat in relation to lower potential into heat in relation to higher potential
06/1990
06/26/1990US4936110 Method and arrangement for withdrawing heat from a space which is exposed to a natural heat influence
05/1990
05/08/1990US4922726 Heat pump system
05/01/1990US4920757 Geothermal heating and air conditioning system
04/1990
04/24/1990US4918938 Heat exchanger
03/1990
03/20/1990US4909312 Interface equipment between a heat pump and a buried heat exchanger
03/13/1990US4907738 Heat pump
02/1990
02/14/1990EP0354749A2 Air-cooled absorption Air-conditioner
02/07/1990EP0353410A2 Operating method for a heat pump installation
01/1990
01/18/1990DE3822396A1 Heat pump installation with a variable temperature lift
12/1989
12/21/1989DE3820811A1 Vehicle air conditioning system (air conditioner)
12/07/1989DE3912113A1 Expanded multi-unit (unit-type) district heating power (heating and power, heat-and-power generating, heat-electric) station (MDHPS) having a heat pump for integrating residual heat
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