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| Number | Title | Issue Date |
| 7273069 | Pressure activated shutoff valve An apparatus for providing a pressurized gas inline valve assembly incorporating a check valve to maintain pressure above a selectable psi and a ball valve for selectively shutting off gas flow. The apparatus is preferably positioned approximate the gas source in a ... | 09/25/2007 |
| 6161768 | Micro gas turbine engine The present invention provides a turbo heater which utilizes a gas turbine engine and a heat exchanger assembly. The gas turbine engine is adapted to efficiently operate over a prolonged period of time and at varying power outputs without adverse or detri... | 12/19/2000 |
| 6073857 | Co-generator utilizing micro gas turbine engine The present invention provides a turbo heater which utilizes a gas turbine engine and a heat exchanger assembly. The gas turbine engine is adapted to efficiently operate over a prolonged period of time and at varying power outputs without adverse or detri... | 06/13/2000 |
| 5992507 | Geothermal community loop field A geothermal community loop field which serves as a shared means of heat exchange for a plurality of thermal loads. Heat is exchanged between the ground and a circulating heat exchange fluid in at least one subterranean heat exchanger. Heat is exchanged b... | 11/30/1999 |
| 5865369 | Recycling high pressure steam for heating purposes Apparatus for diverting and recycling exhaust steam used in manufacturing processes to provide steam for conventional heating equipment.... | 02/02/1999 |
| 5535944 | Combined heat and power system A combined heat and power (CPH) system for a building has an electrical generator (12) For supply power and a gas engine (14) which drives the generator, contained in a housing (30). Recirculating air is drawn in through an inlet (32), over the electric g... | 07/16/1996 |
| 5106447 | Bonding method employing hot melt adhesives for insulation assembly Insulation assemblies for the HVAC industry are bonded by spray application of a hot melt adhesive composition comprising 10 to 50 percent of an isostactic thermoplastic polybutene-1/ethylene copolymer containing from about 5.5 to about 10% by weight ethy... | 04/21/1992 |
| 4873840 | Energy co-generation system A co-generation system for producing electricity, heating and cooling and including a combustion unit, a boiler connected to the combustion unit, a steam engine and an electrical generator driven to the steam engine. A condenser is connected to the steam ... | 10/17/1989 |
| 4865251 | Receiving station for long-distance heating The receiving station for long-distance heating has a heat exchanger for the transmission of heat from the long-distance heating medium, in particular water, to the heating water in a receiver circuit. This arrangement has a first automatic control system... | 09/12/1989 |
| 4782888 | Community thermal energy exchange system A system of interconnecting a plurality of users of low grade thermal energy exchange has a number of users which are heat sources and a number of users which are heat sinks to balance heat flux. Heat is exchanged between a nontoxic primary heat transfer ... | 11/08/1988 |
| 4775944 | System for controlling air conditioning and/or hot water supplying apparatus A control system for air conditioning and/or hot water supplying apparatus using a central heat source supplies cooling or heating to a plurality of dwelling units of a congregated or multi-storied house. The system calculates the optimum operating condit... | 10/04/1988 |
| 4715192 | Electrical or thermal tracking cogeneration system utilizing open cycle-air-conditioning The invention is a cogeneration system which utilizes an open cycle air-conditioner in conjunction with an internal combustion engine, a generator, an exhaust heat recovery unit, a hot water heat exchanger, a circulating pump, a load dump heat exchanger a... | 12/29/1987 |
| 4360152 | Auxiliary heating system An auxiliary boiler is provided for substantially reducing fuel consumption of a conventional forced-air heating system. A boiler tank substantially filled with water is connected by hot and cold water lines to a heat exchanger disposed within the cold ai... | 11/23/1982 |
| 4232522 | Method and apparatus for utilizing waste heat from a flowing heat vehicle medium A method and apparatus for the utilization of the waste heat of diesel engines, in which the waste heat is utilized in at least one vapor circuit to produce mechanical energy. To improve the waste heat utilization, the engine media containing the waste he... | 11/11/1980 |
| 4226364 | Single conduit air conditioning system An improved air conditioning system of the type wherein a conditioned fluid is conveyed from a central plant to a remote location where the fluid exchanges heat prior to being returned to the central plant for reconditioning. The system is provided with s... | 10/07/1980 |
| 4187982 | Apparatus for increasing the transmission capacity of remote heating grids For the purpose of improving the utilization of remote heating grids, particularly for space air heating, at least one heat storage device is connected in series with the heaters of a hot water heating circuit, whereby the water conduit from the remote he... | 02/12/1980 |
| 4170879 | Method and system for utilizing waste heat generated in thermal electric power stations In a thermal power station installation the waste heat of the last stage is utilized by storing the cooling water which receives this waste heat, and heating it further during the periods during which the installation is not on full load, whereafter it is... | 10/16/1979 |
| 4168030 | Waste heat utilization system Power generating plants discharge steam or hot water typically from a steam turbine to a condenser system for the purpose of cooling the discharged fluid prior to its being recirculated. The condenser system receives water from an ambient source pumped us... | 09/18/1979 |
| 4159595 | Installation for cultivating plants An installation for cultivating plants on a soil, characterized in that it comprises at least one heat-exchanger, each of said exchangers being constituted by an elongated flat flexible hose with a then wall resting on the soil, and feed means for circula... | 07/03/1979 |
| 4158291 | Environmentally assisted heating and cooling system A heating and cooling system comprises a first reservoir containing liquid at an elevated temperature, solar collecting means exposed to solar radiation for collecting solar energy and means disposed in thermal exchange relationship with said first reserv... | 06/19/1979 |
| 4134267 | Method and device for utilizing waste heat For utilizing the waste heat from a thermal power station a plurality of annular zones are provided surrounding the power station, said zones having different temperature levels decreasing in discrete steps radially outwardly from zone to zone. Heat comsu... | 01/16/1979 |
| 4093868 | Method and system utilizing steam turbine and heat pump Discharge cooling water from the condenser of a steam turbine is pumped through the chiller of a refrigeration machine operating as a "heat pump" during heating duty, thus improving the efficiency thereof from that obtained when using water supplied to th... | 06/06/1978 |
| 4019681 | Thermal distributing unit A thermal distributing unit for thermal working fluid, primarily for heating and/or air conditioning purposes, comprises a first or thermal supply stand having a main supply connection and a main return connection for the or each thermal working fluid, a ... | 04/26/1977 |
| 4006857 | Method for transportation and utilization of waste heat of large condenser power plants A method for transporting heat over long distances in which waste heat from large power plants is utilized. The condenser back-pressure is increased to a level so that the condenser cooling water acquires a temperature in the range of 25°-50° C. The coo... | 02/08/1977 |
