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 29 - Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
Patents for F25B 29 - Combined heating and refrigeration systems, e.g. operating alternately or simultaneously (6,502)
11/1979
11/06/1979US4173125 Energy recovery system
10/1979
10/23/1979US4171621 Freeze protection device in heat pump system
10/02/1979US4169554 Solar energy system with heat pump assistance
09/1979
09/04/1979CA1061757A1 Thermopump
08/1979
08/22/1979EP0003578A2 Refrigerant circuit of a heat pump
07/1979
07/31/1979CA1059330A1 Heat extraction or reclamation apparatus for refrigerating and air conditioning systems
07/10/1979CA1057966A1 Air source heat pump with multiple slide rotary screw compressor/expander
06/1979
06/19/1979US4158291 Environmentally assisted heating and cooling system
05/1979
05/08/1979US4152904 Absorption heating-cooling system
05/08/1979US4152901 Method and apparatus for transferring energy in an absorption heating and cooling system
05/01/1979US4151721 Solar powered air conditioning system employing hydroxide water solution
04/1979
04/17/1979US4149585 Process and apparatus for heat exchange between fluids
04/10/1979US4148436 Solar augmented heat pump system with automatic staging reciprocating compressor
03/1979
03/27/1979US4146089 Hot water system and condensing unit therefor
03/13/1979US4143523 Apparatus to transfer heat or refrigerant
03/06/1979US4142678 Combined heat pump system and ice making system
02/1979
02/27/1979US4141222 Energy recovery system for refrigeration systems
02/20/1979CA1048802A1 Heat reclaim unit
02/13/1979US4138861 Solid adsorption air conditioning apparatus and method
01/1979
01/23/1979US4135571 Thermal storage systems
01/23/1979CA1046782A1 Room heating devices with heat pumps
01/16/1979US4134274 System for producing refrigeration and a heated liquid and control therefor
01/16/1979US4134273 Home heating and cooling system
01/10/1979EP0000205A1 Heat pump apparatus and method for increasing the heat content of a fluid and thereafter transferring the heat content to an ambient atmosphere
01/10/1979EP0000192A1 Heat recovery device for a dishwasher
12/1978
12/19/1978CA1044477A1 Air conditioning system having compressor-expander in pressurized closed loop system with solar assist and thermal storage
12/05/1978CA1043583A1 Heat pumps
11/1978
11/07/1978US4123914 Energy saving change of phase refrigeration system
10/1978
10/31/1978US4122892 Devices for heating premises by the use of heat pumps and method therefor
10/17/1978US4120316 Flow control valve assembly
10/10/1978US4118934 Process and apparatus for transforming heat at a relatively low temperature into power or energy
10/10/1978CA1039962A1 Heat pump-refrigeration system with water injection and regenerative heat exchanger
10/03/1978US4117696 Heat pump
09/1978
09/19/1978US4114686 Hot water system
09/19/1978US4114380 Traveling wave heat engine
09/12/1978US4112705 Fuel fired supplementary heater for heat pump
09/12/1978CA1038176A1 Thermal storage systems
08/1978
08/01/1978US4103706 Reservoir
07/1978
07/18/1978US4100755 Absorption refrigeration system utilizing solar energy
07/11/1978US4100092 Dual temperature thermal energy storage composition for heat pumps
06/1978
06/13/1978US4094167 Heat pump assembly
05/1978
05/30/1978US4091994 Heat pump device
05/16/1978US4089667 Heat exchanger
03/1978
03/21/1978US4079596 Heat engines and heat pumps
03/14/1978US4078974 Vapor generating and recovering apparatus including vapor condenser control means
03/07/1978US4077464 Cooling system for buildings
01/1978
01/31/1978US4071077 Heating system for building
01/03/1978US4065937 Method to transfer heat or refrigerant and heat pump for practical application of this method
12/1977
12/27/1977US4064705 Air conditioning system having compressor-expander in pressurized closed loop system with solar assist and thermal storage
12/13/1977US4062197 Absorption heating-cooling system
12/06/1977US4061186 Combined cooling and heat recovery system
09/1977
09/20/1977US4049045 Heating and cooling system for buildings
08/1977
08/30/1977US4044568 Space heating and cooling system
08/16/1977US4042017 Produce warmer
08/16/1977US4041726 Hot water system
08/16/1977US4041724 Installation for heating a fluid, preferably water, in a conventional central heating system, using the waste heat produced by a number of refrigerators
07/1977
07/26/1977US4037650 Thermal storage apparatus
07/26/1977US4037649 Heating and refrigeration system
07/12/1977US4034801 Optimum environmental control system for a building
07/05/1977US4033141 Method for thermal running of a heat pump plant and plant for carrying out the method
06/1977
06/21/1977US4030312 Heat pumps with solar heat source
05/1977
05/31/1977US4026347 Method and apparatus for the alternate heating and cooling of a heat exchanger of a heating and cooling system
05/31/1977US4026035 Dryer with low temperature heat recovery system
05/24/1977US4025326 Heat reclaiming system
05/24/1977US4024728 Method of and an installation for controlling the temperature of a plurality of rooms having mutually differing and varying heating requirements, among which rooms there is normally a cooling requirement
04/1977
04/26/1977US4019679 Thermostatically controlled heating arrangement including a heat pump
04/26/1977US4019570 Heating and cooling apparatus
04/26/1977US4019338 Heating and cooling system
04/19/1977US4018583 Vapor compression, heat exchanging
04/19/1977US4018581 Solar heating system
04/12/1977US4017285 Heat pump-refrigeration system with water injection and regenerative heat exchanger
04/12/1977US4016657 Heat pump freeze drying system
04/05/1977US4015962 Temperature control system utilizing naturally occurring energy sources
03/1977
03/29/1977US4014751 Vapor generating and recovering apparatus
03/22/1977US4012920 Heating and cooling system with heat pump and storage
03/01/1977US4009587 Combined loop free-piston heat pump
02/1977
02/15/1977US4007874 Heating system
02/15/1977US4007603 Apparatus for defrosting of an evaporator in a heat pump
02/01/1977US4005584 Composition, method and apparatus for absorption heating
01/1977
01/18/1977US4003798 Vapor generating and recovering apparatus
01/18/1977US4003213 Triple-point heat pump
01/04/1977US4000778 Temperature-control system with rotary heat exchangers
12/1976
12/14/1976US3996998 Combination furnace--heat pump unit
12/14/1976US3996759 Environment assisted hydronic heat pump system
12/07/1976US3995809 Arrangement for air-conditioning of one or more rooms
11/1976
11/30/1976US3994142 Heat reclaim for refrigeration systems
11/23/1976US3992896 Air conditioning system
11/16/1976US3991819 Air conditioning device
11/09/1976US3990264 Refrigeration heat recovery system
10/1976
10/19/1976US3986664 Heating installation comprising a heat pump and a fuel-fired boiler with a radiator circuit
10/19/1976US3986345 Heat recovering device for dishwashers
10/05/1976US3984050 Heat pump system
09/1976
09/21/1976US3981702 Compression, centrifuging
08/1976
08/24/1976US3976123 Refrigeration system for controlled heating using rejected heat of an air conditioner
08/10/1976US3973622 Temperature-control system with rotary heat exchangers
06/1976
06/29/1976US3965696 Crop drying (food preserving) apparatus
06/01/1976US3960322 Solar heat pump
05/1976
05/04/1976US3953973 Heat engine and heat pump utilizing a working medium undergoing solidification and melting operations
04/1976
04/06/1976US3948314 Thermodynamically integrated buildings
03/1976
03/23/1976US3945218 Environment control system
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