| Patents for F01K 25 - Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for (4,827) |
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| 01/01/1991 | US4981021 Heat exchanger, system, and method for using the same |
| 12/12/1990 | EP0402045A1 Air separation |
| 12/06/1990 | CA2018238A1 Air separation |
| 10/25/1990 | DE3912650A1 Expanding residual gas from nitric acid mfr. - to provide coolant for pressure absorption column |
| 10/24/1990 | EP0393084A1 Power generation plant |
| 10/17/1990 | EP0392801A2 Method for driving a prime mover using a refrigerant gas for generating electric power and for heating or cooling water |
| 10/10/1990 | CA2014148A1 Driving method, electric power generating method, and cold or hot water obtaining method using refrigerant gas |
| 10/09/1990 | CA1274985A1 Electrical power plant and method of producing electricity |
| 10/04/1990 | WO1990011431A1 A process for converting thermal energy into mechanical energy |
| 09/20/1990 | DE3908523A1 Carbonic acid power station |
| 09/06/1990 | DE3935048A1 Multi-technology system for energy conversion - incorporates arrangement of turbines with heat exchanger |
| 09/05/1990 | CN1045173A Method and apparatus for separating air by means of rectification |
| 08/29/1990 | EP0384483A2 Air rectification process and apparatus |
| 08/29/1990 | EP0383994A2 Air rectification process and apparatus |
| 08/16/1990 | EP0381825A1 Process for the production of mechanical energy during the NH3 oxidation in the HNO3 process |
| 08/09/1990 | WO1990008882A1 Method for converting thermal energy of a working medium into mechanical energy in a steam plant |
| 08/09/1990 | DE3903430A1 Intermittent flow accelerator having a heat exchanger |
| 08/01/1990 | CN1044324A Full-sealed rotor type heat engine |
| 07/24/1990 | US4942733 Hot gas generator system |
| 07/18/1990 | EP0378428A2 Method and apparatus for thermodynamic cycle |
| 07/18/1990 | EP0378085A2 Exhaust gas turbine generator apparatus |
| 07/12/1990 | DE3903605C1 Method and heat engine for converting thermal energy into mechanical work |
| 06/21/1990 | DE3842853A1 Thermal engine |
| 06/13/1990 | EP0372864A1 Method of and apparatus for producing power using steam |
| 05/30/1990 | EP0370587A2 Apparatus for generating electric energy using hydrogen storage alloy |
| 05/22/1990 | US4927856 Production of hydrocarbons from geothermal resources |
| 05/22/1990 | US4926643 Closed loop system with regenerative heating and pump-driven recirculation of a working fluid |
| 05/17/1990 | DE3838744A1 Method for increasing the efficiency of caloric gas expansion machines, in particular of turbines for power stations, and a device therefor |
| 05/09/1990 | EP0367428A1 Air separation |
| 05/09/1990 | EP0244435B1 Multiple energy generator with integrated thermal cycle |
| 05/01/1990 | US4920750 Heat exchanging system for power generation |
| 05/01/1990 | US4920749 Method of and means for producing electricity |
| 04/15/1990 | CA2000489A1 Air separation |
| 04/12/1990 | DE3834703A1 Solar thermal power station (plant) using environmental heat |
| 03/27/1990 | US4910963 Solar energy process |
| 03/22/1990 | DE3929876A1 Verfahren und einrichtung zum erzeugen elektrischer energie Method and device for generating electrical energy |
| 03/07/1990 | EP0356821A1 Method and apparatus for cryogenic liquid expansion |
| 03/07/1990 | EP0356470A1 A modular device for the exploitation of the heat in fluid means at low temperature |
| 02/28/1990 | CN1040082A Thermal energy from environmental fluids |
| 02/27/1990 | US4904158 Expansion turbine |
| 02/13/1990 | US4899545 Method and apparatus for thermodynamic cycle |
| 01/30/1990 | US4896509 1,2-dichloro-1,1,2-trifluoroethane |
| 01/23/1990 | US4894994 Sealed heat engine |
| 01/23/1990 | CA1264561A1 Natural gas depressurization power recovery and reheat |
| 01/10/1990 | EP0349611A1 Combined gas and steam turbine plant |
| 01/09/1990 | US4891939 System for the cryogenic processing and storage of combustion products of heat engines |
| 12/26/1989 | US4889539 Steady work output rate apparatus for cyclic solid with gas reactors |
| 12/20/1989 | EP0168494B1 Utilization of thermal energy |
| 12/07/1989 | DE3813787A1 Energy generating device (heat centrifuge 2 with cyclic process) |
| 11/23/1989 | DE3915618A1 Method for converting thermal energy into mechanical work in a turbo-energy block using carbon dioxide as working fluid |
| 11/09/1989 | DE3807783A1 Energy generating device heat centrifuge 1 |
| 11/09/1989 | DE3807773A1 Energy generating device heat centrifuge 2 |
| 11/02/1989 | DE3812929A1 Energy generating device (heat centrifuge 1 with cyclic process) |
| 11/02/1989 | DE3812928A1 Energy generating device (heat centrifuge 2 with cyclic process) |
| 10/31/1989 | US4876856 Heat exchanging system |
| 10/31/1989 | US4876855 Working fluid for rankine cycle power plant |
| 10/26/1989 | DE3807357A1 Energy generating device embodiment 2 |
| 10/17/1989 | US4873834 Cooling plant load reduction apparatus and method |
| 10/10/1989 | US4872315 Heat exchanger and systems and methods for using the same |
| 10/03/1989 | US4871295 Modular rankine cycle vapor turbine |
| 09/20/1989 | CN1035705A Compound rankine circulating system |
| 09/13/1989 | EP0214957B1 Pressure pulser |
| 08/16/1989 | EP0328103A1 Hybrid rankine cycle system |
| 08/09/1989 | CN1034605A Method of energy conversion by using rotating heat-pipe and heat engine |
| 07/27/1989 | WO1989006749A1 A modular device for the exploitation of the heat in fluid means at low temperature |
| 07/27/1989 | WO1989006748A1 Solar generator for converting sunlight to mechanical energy |
| 07/13/1989 | DE3841640A1 Method of obtaining heat energy from environmental fluids |
| 07/05/1989 | CN1033677A Power generation plant |
| 07/04/1989 | US4843824 System for converting heat to kinetic energy |
| 07/04/1989 | US4843823 eat engine |
| 06/29/1989 | DE3836061A1 Method for evaporating liquid natural gas |
| 06/29/1989 | DE3836060A1 Method for vaporising liquid natural gas |
| 06/27/1989 | US4841731 Electrical energy production apparatus |
| 06/13/1989 | US4838027 Power cycle having a working fluid comprising a mixture of substances |
| 06/01/1989 | WO1989004914A1 Combined gas and steam turbine plant |
| 06/01/1989 | WO1989004913A1 Power generation plant |
| 05/23/1989 | US4831827 Heat transfer systems |
| 05/09/1989 | US4829196 Energy-saving pressure reducer |
| 05/09/1989 | US4827877 Heat recovery system utilizing non-azeotropic medium |
| 05/02/1989 | US4825650 Hot gas generator system |
| 04/11/1989 | US4819437 Method of converting thermal energy to work |
| 04/05/1989 | EP0309467A1 Thermodynamic cycle. |
| 02/21/1989 | US4805410 Closed loop recirculation system for a working fluid with regeneration |
| 01/19/1989 | DE3722232A1 Osmotic cyclic process |
| 11/29/1988 | CA1245465A1 Method and apparatus for implementing a thermodynamic cycle with intercooling |
| 11/24/1988 | DE3715697A1 Device with a Closed Circuit |
| 11/22/1988 | US4785876 Heat recovery system utilizing non-azetotropic medium |
| 11/17/1988 | DE3812995A1 Osmotic generator |
| 10/26/1988 | CN88100935A Direct fired power cycle |
| 10/25/1988 | US4779424 Heat recovery system utilizing non-azeotropic medium |
| 10/12/1988 | EP0286565A2 Power cycle working with a mixture of substances |
| 10/12/1988 | CN86101160B Method and apparatus for implementing a thermodynamic cycle with intercooling |
| 09/13/1988 | CA1241845A1 Thermodynamic process for a practical approach to the carnot cycle |
| 09/01/1988 | DE3705310A1 Exhaust turbine generator unit |
| 08/31/1988 | EP0280453A1 Direct fired power cycle |
| 08/23/1988 | US4765143 System for storing energy and generate power |
| 08/16/1988 | US4763480 Method and apparatus for implementing a thermodynamic cycle with recuperative preheating |
| 08/10/1988 | EP0277777A2 Power plant using CO2 as a working fluid |
| 08/02/1988 | US4760705 Nuclear reactor heat source |
| 07/27/1988 | EP0275619A1 Method and apparatus for generating electric energy using hydrogen storage alloy |