| Patents for F24J 3 - Other production or use of heat, not derived from combustion (4,775) |
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| 03/31/1993 | EP0456696B1 A method of erecting the outer walls of a building, and a building |
| 03/03/1993 | EP0309467B1 Thermodynamic cycle |
| 02/23/1993 | US5188090 For converting energy |
| 02/09/1993 | US5184576 Heat exchange system utilizing cavitating fluid |
| 02/09/1993 | CA1313479C Snow melting method utilizing heat retaining function of underground aquifer without sprinkling water |
| 02/02/1993 | US5183100 System for efficiently exchanging heat or cooling ground water in a deep well |
| 01/27/1993 | CN1068396A Compressor assembly |
| 01/13/1993 | EP0522673A2 Compressor unit |
| 01/12/1993 | US5178485 Heat exchanging pipe system for uniformly heating road surfaces and the like |
| 01/11/1993 | CA2072269A1 Compressor assembly |
| 12/24/1992 | DE4140778A1 Energy generation system using earth surface heat - uses circulated refrigeration medium vapour fed through expansion turbine |
| 12/22/1992 | US5172754 Heat exchanger for recovery of heat from a spa or hot tub pump motor |
| 12/02/1992 | EP0349576B1 Method for recovering latent heat from a heat transfer medium |
| 12/01/1992 | CA1310868C Device suitable for producing thermal flow inside a thermal integral block |
| 10/29/1992 | WO1992018815A1 Method and device for tapping and converting thermal energy |
| 10/08/1992 | DE4127161A1 Method of obtaining terrestrial heat from abandoned mines - is achieved by pumping up water from flooded mines into heat exchangers or by water turbines in non flooded mines |
| 09/08/1992 | US5145656 Brine treatment |
| 09/08/1992 | US5145515 Passing acidified constituents through conduit packed with metal higher in electromotive series than copper |
| 09/08/1992 | US5144940 Compost water heater and method |
| 08/20/1992 | DE4204178A1 Ultra sound transmitters used in conjunction with audio sounds in extraction of heat from thermal salt bearing streams - involves keeping crystals in suspension by agitation but heat exchangers may be used to reheat water as alternative |
| 08/19/1992 | EP0499466A2 System for efficiently exchanging heat or cooling ground water in a deep well |
| 07/30/1992 | DE4101800A1 Heat generator with moving friction plate and heat stores |
| 07/29/1992 | EP0306508B1 Heat accumulator with a heat storage and absorption body of low thermal conductivity |
| 06/16/1992 | US5121606 Thermodynamic cyclic process |
| 06/10/1992 | CN1016991B Air-conditioning system using usderground water as coolant |
| 06/09/1992 | CA1303024C Geothermal energy collecting method |
| 06/03/1992 | EP0488926A1 Procedure to increase the temperature in a closed circuit heating system, working on any kind of calorific energy basis |
| 05/31/1992 | CA2056544A1 Procedure to increase the temperature in a closed circuit heating system, working on any kind of calorific energy basis |
| 05/19/1992 | CA1300901C Method and apparatus for the utilization of the heat of melting of water |
| 04/28/1992 | US5108269 Method of controlling a rotary compressor |
| 04/07/1992 | US5101632 Thermal radiation energy conversion |
| 03/25/1992 | EP0322424B1 Process for composting organic material and device for carrying out this process |
| 03/03/1992 | CA1296535C Method for recovering latent heat from a heat transfer medium |
| 02/20/1992 | DE4025579A1 Process for recovery of energy - utilises its own energy, ambient temp. and temp. difference is inversely proportional to increased volume |
| 01/22/1992 | EP0467426A2 Heat exchange apparatus |
| 01/21/1992 | US5082492 Brines |
| 01/08/1992 | EP0464020A1 Power station for converting elementary energy into thermal energy |
| 12/17/1991 | US5072783 For extracting heat from a geothermal deposit using fluid circulation |
| 12/05/1991 | DE4017684A1 Utilising thermal and mechanical energy potentials - esp. of environment, for remote electrical and thermal energy prodn. |
| 12/03/1991 | US5069199 Device suitable for producing a thermal flow inside a thermal integral block |
| 12/02/1991 | WO1991019139A1 Process for using energy potentials, in particular with small temperature differences |
| 12/02/1991 | CA2084202A1 Process for using energy potentials, in particular with small temperature differences |
| 11/21/1991 | EP0457416A1 Device for using geothermal energy |
| 11/21/1991 | EP0456696A1 A method of erecting the outer walls of a building, and a building. |
| 11/19/1991 | WO1991018205A1 Device for utilizing geothermal energy |
| 11/19/1991 | CA2063833A1 Device for utilizing geothermal energy |
| 11/06/1991 | CN2088000U Cyclonic geothermal water sand-remover |
| 11/05/1991 | US5062736 Snow melting method utilizing heat retaining function of underground aquifer without sprinkling water |
| 10/29/1991 | CA1291383C Heat generator for automotive vehicle |
| 10/22/1991 | US5058386 Power generation plant |
| 10/15/1991 | US5056502 Friction heat generator |
| 10/08/1991 | US5054556 Method of and means for operating geothermal wells |
| 09/19/1991 | DE4008183A1 Energy saving system to use heat absorbed by ground - requires insulated cavity wall construction through which forced air is pumped in closed circulation |
| 09/10/1991 | US5046480 Compression furnace |
| 09/04/1991 | EP0444170A1 Process for making general use of the earth's heat and obtaining minerals in the zone of weakness (at depths of 13-30 km). |
| 08/13/1991 | US5038853 Heat exchange assembly |
| 06/21/1991 | CA2006364A1 Supercooled liquid thermal generator and improved triggering device |
| 06/18/1991 | US5024553 Non-water-sprinkling type snow melting method and system |
| 06/11/1991 | US5022787 Method of returning geothermal gases to the underground |
| 04/30/1991 | US5012060 Permanent magnet thermal generator |
| 03/12/1991 | WO1991003690A1 Process for making general use of the earth's heat and obtaining minerals in the zone of weakness (at depths of 13-30 km) |
| 03/12/1991 | CA2041637A1 Recovery of geothermal energy and mineral resources |
| 03/01/1991 | CA2023305A1 Solar energy system |
| 02/19/1991 | US4993377 Automobile heating apparatus and heat generator for the same |
| 01/24/1991 | DE4008571A1 Method of winning ground heat - involves drilling without rotation and using natural pressure and temperature ratios with electro hydraulic effects |
| 01/16/1991 | EP0408207A2 Positive temperature coefficient heater |
| 01/01/1991 | US4981172 Mechanism for heat transfer |
| 12/25/1990 | US4979374 Geothermal heat- and water supply plant |
| 12/04/1990 | US4974778 Heating system for occupant spaces in power vehicles with liquid-cooled internal combustion engines |
| 10/31/1990 | EP0395600A2 Dynamic heater |
| 10/24/1990 | EP0393084A1 Power generation plant |
| 10/04/1990 | WO1990011446A1 Power station for converting elementary energy into thermal energy |
| 09/04/1990 | CA1273496A1 Geothermal energy utilization system |
| 08/30/1990 | DE3906135A1 Heat recovery (generating) system |
| 08/23/1990 | DE4004777A1 Production of heat by oxidising petroleum or other fossil material - used as nutrient medium for genetically manipulated organisms |
| 08/02/1990 | WO1990008862A1 A method of erecting the outer walls of a building, and a building |
| 08/02/1990 | CA2045636A1 Method of erecting the outer walls of a building, and a building |
| 06/27/1990 | CN1043381A Air-conditioning system using underground water as coolant |
| 06/26/1990 | US4937052 Underground chemical reactor |
| 06/26/1990 | US4936290 Solar energy system |
| 06/05/1990 | US4931627 Positive temperature coefficient heater with distributed heating capability |
| 06/05/1990 | US4930572 Heat pipe and aqua-thaw animal waterer |
| 05/29/1990 | US4928752 Method for recovering latent heat from a heat transfer medium |
| 05/23/1990 | EP0314719B1 Binary compression heat pump with solution circuit |
| 05/22/1990 | US4927856 Production of hydrocarbons from geothermal resources |
| 05/09/1990 | CN1042003A Non-coal heating system |
| 05/08/1990 | CA1268758A1 Method and means for applying a heat exchanger in a drill hole for the purpose of heat recovery and storage |
| 04/24/1990 | US4918945 Binary solution compressive heat pump with solution circuit |
| 04/04/1990 | EP0361053A2 Heating device for the interior of a fluid-cooled internal-combustion engine of an automotive vehicle |
| 04/03/1990 | US4913854 Water warming method and apparatus therefor |
| 03/07/1990 | EP0356745A1 Heat transfer device |
| 01/31/1990 | EP0352275A1 Reservoirs for media. |
| 01/30/1990 | US4896725 In-well heat exchange method for improved recovery of subterranean fluids with poor flowability |
| 01/10/1990 | EP0349576A1 Method for recovering latent heat from a heat transfer medium. |
| 12/28/1989 | WO1989012728A1 In-well heat exchange method for improved recovery of subterranean fluids with poor flowability |
| 12/14/1989 | DE3813669A1 Heat-pump installation |
| 11/30/1989 | DE3817638A1 Heating of fluids by friction energy |
| 11/23/1989 | DE3913429A1 Earth collector for obtaining geothermal energy and for heat accumulation in the earth, and method for erecting an earth collector |
| 11/21/1989 | US4882071 Method and apparatus for the in situ decontamination of underground water with the aid of solar energy |
| 09/19/1989 | US4867229 Method and means for applying a heat exchanger in a drill hole for the purpose of heat recovery or storage |