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| Number | Title | Issue Date |
| 8161963 | Thin film solar collector A solar collector is provided that is formed from relatively thin polymer sheet(s). The sheet(s) are welded together to integrally define a storage tank, a plurality of fluid flow channel (e.g. risers), and other desired features within the collector. The storage ta... | 04/24/2012 |
| 7234314 | Geothermal heating and cooling system with solar heating A sealed well direct expansion geothermal heat exchange unit, whose sealed well can be placed in ground and/or in water, consisting of a conventional direct expansion, or other heat pump, system wherein the exterior refrigerant heat exchange lines are placed within ... | 06/26/2007 |
| 7178337 | Power plant system for utilizing the heat energy of geothermal reservoirs A geothermal power plant system for producing electricity and process heat at least one compressed gas storage device and at least one gas compression device connected to the at least one compressed gas storage device. At least one gas utilization device is connecte... | 02/20/2007 |
| 7146823 | Horizontal and vertical direct exchange heating/cooling system sub-surface tubing installation means A sub-surface geothermal direct exchange sub-surface tubing installation means, comprising situating certain specified tubing sizes for certain specified horizontal distances and for certain specified depths within each of a horizontally oriented trench and a vertic... | 12/12/2006 |
| 7108794 | Recycled tire pipe fluid purification process and apparatus for liquids including stormwater A method of conveying and purifying fluids including stormwater by passing fluid through an assemblage of tires fastened together by physical and chemical means, and an apparatus for carrying out the same method, are disclosed. The apparatus according to the ... | 09/19/2006 |
| 7097210 | Method and apparatus for providing a transition connector to introduce outside air and vent flue for boiler combustion A method and apparatus for sealing a combustion intake for a boiler from inside air is provided. A method and apparatus for providing a transition piece for venting fresh air to and combusted gas away from a boiler is also provided. A method of connecting a transiti... | 08/29/2006 |
| 6814070 | Molded polymer solar water heater A solar water heater has a rotationally-molded water box and a glazing subassembly disposed over the water box that enhances solar gain and provides an insulating air space between the outside environment and the water box. When used with a pressurized water system,... | 11/09/2004 |
| 6787116 | Overmolding insert for heat exchanger, process for manufacturing a heat exchanger, and heat exchanger produced thereby An overmolding insert includes a base having at least one opening in a first surface, the opening communicating with a second surface opposite the first surface, at least one hollow projection extending from the first surface, the hollow projection having a first op... | 09/07/2004 |
| 6772823 | Heat storage device A heat storage device comprises a heat storage tank 2 charged with a heat storage material 1 for storing the heat supplied from the outside, and a heat exchanger 3 for executing an injection and an extraction of heat between the inside of the st... | 08/10/2004 |
| 6712069 | Solar energy collection and storage system A solar energy collection and storage system uses the radiation from the sun to heat a liquid in a collector and uses an enclosure with a vacuum to contain the collector, pump, pipes and storage tank to provide maximum insulation and minimum heat loss. Also, the vac... | 03/30/2004 |
| 6568386 | Solar heat harnessing system The present invention was achieved in order to provide a solar thermal system, wherein using a small amount of water as a medium, solar thermal energy can be largely and efficiently collected as latent heat of saturated steam or superheated steam with 1 a... | 05/27/2003 |
| 6371198 | Heat storage device A heat storage device comprises a heat storage tank 2 charged with a heat storage material 1 for storing the heat supplied from the outside, and a heat exchanger 3 for executing an injection and an extraction of heat between the inside of the storage tank... | 04/16/2002 |
| 6364002 | Heat storage apparatus A heat storage apparatus for a temperature range of about 10 to 95 degrees Celsius, especially for solar installations, heat pumps, boilers or the like and for extraction of heat for the operation of a room heating installation and/or an installation for ... | 04/02/2002 |
| 6142216 | Indirect water heater An apparatus for heating a domestic water supply including a glass-lined storage tank for the domestic water supply and having a domestic water inlet port, a domestic water outlet port, and a heat-exchanging coil mounted therein. A heating tube is connect... | 11/07/2000 |
| 5941238 | Heat storage vessels for use with heat pumps and solar panels A solar heat storage and heat pump system includes an insulated heat storage vessel filled by a liquid heat storage medium. A first heat exchanger is deeply immersed in the storage vessel, with solar panel means operatively connected by a pair of delivery... | 08/24/1999 |
| 5660165 | Back-up heater An apparatus for heating a domestic water supply including a glass-lined storage tank to contain the domestic water supply. A combustible fuel burner is positioned to heat the domestic water supply within the glass-lined storage tank. A solar heating tube... | 08/26/1997 |
| 5575276 | Solar thermal water heating system A solar thermal water heating system including a solar collector unit, first and second heat exchangers, and a drain back tank, ordered respectively in vertically descending relation. The solar energy collector comprises a plurality of heat absorbing modu... | 11/19/1996 |
| 5537990 | Solar water heating system A solar water heating system includes a water storage tank to which a hot water outlet pipe and a cold water inlet pipe are connected. A solar-collector unit is mounted below the water storage tank. A downcomer pipe connects the water storage tank and the... | 07/23/1996 |
| 5438712 | Hot tub heater system The present invention is a hot tub heater system. The hot tub heater system is comprised of a hot tub having water within. The hot tub heater system is also comprised of means for heating the water within the hot tub. The heating means comprises a hot wat... | 08/08/1995 |
| 5307802 | High efficiency steam generator A steam generator having two vaporization chambers filled with molten metal salts for sequential flash evaporation of preheated atomized water through multiple vaporization tubes in said respective chambers. The molten metal salts are heated by secondary ... | 05/03/1994 |
| 5259363 | Solar roofing system A solar roofing panel system for use in residential and commercial buildings employing conventional metal roofing components. The system collects and supplies thermal energy from the sun to heat the interior thereof and also is capable of providing solar ... | 11/09/1993 |
| 5245984 | Solar domestic hot water system with thermal siphon preheating A solar energy based domestic hot water system which employs a columnar-type heat exchanger designated as a thermal booster having two columns, through one of which passes extremely warm water coming from the output of a solar collector to prewarm colder ... | 09/21/1993 |
| 5224466 | Process for converting solar energy into heat and device for implementing the process A process and apparatus for converting solar energy into heat wherein a solar collector includes a plurality of mutually-coupled solar energy collector elements (1) coupled to a heat transfer fluid circuit, each collector element including a collector cha... | 07/06/1993 |
| 4852547 | Heat storage The present invention comprises heat-storage means to store heat in a tank of liquid, and back-up heat means. The back-up heat means comprise more than one source of heat, which can produce back-up heat and heated liquid at various temperatures (for examp... | 08/01/1989 |
| 4790477 | Solar heating The invention relates to a space heating system comprising an air cooled solar collector, a heat store, air ducting, a forced draught mechanism valves, auxiliary heating means and a control system. According to the invention the auxiliary heating means in... | 12/13/1988 |
| 4779610 | Plane solar heat collector A solar accumulator with a plane solar heat collector of the kind which emits radiated heat to an accumulator tank containing a heating fluid in a pressure free condition and at least one heat exchanger coil is arranged in said accumulator tank. The colle... | 10/25/1988 |
| 4691692 | Solar energy system with delayed drain-back A solar energy system in which a heat transferring liquid captures heat in solar collectors and stores it in a storage tank is disclosed. A pump moves heat transferring liquid from the storage tank to the collectors and into a drain-back module only when ... | 09/08/1987 |
| 4574779 | Solar water heating system An active solar hot water system includes a solar collection unit, a heat exchanger, and a draindown tank, ordered respectively in vertically descending relation. A pump for drawing thermally conductive recirculation fluid from the draindown tank and deli... | 03/11/1986 |
| 4550712 | Solar water heating apparatus and solar concentrator useful therewith Solar water heating apparatus comprising a housing, apparatus disposed in the housing for receiving incident solar energy and for heating a first fluid thereby, heat exchanger apparatus disposed in the housing for contacting the heated first fluid and bei... | 11/05/1985 |
| 4539975 | Integral storage solar heating system An improved integral storage solar heating system is described which comprises an integral storage solar collector comprising an absorber means, a heat storage medium of large heat capacity and high thermal conductivity directly heated by the absorber mea... | 09/10/1985 |
| 4531510 | Bidirectional thermal syphon valve, installation for the production and storage of heat or cold comprising such a thermal syphon valve, and various uses The invention relates to a bidirectional thermal siphon-valve operating by natural convection. It further relates to an installation for the production and storage of heat or cold comprising such a thermal siphon-valve, preferably with a continuously oper... | 07/30/1985 |
| 4524759 | Process for the reversible transfer of thermal energy and heat transfer system useful therein A process for reversibly transferring heat between a plurality of zones maintained at different temperature levels, and a heat transfer system useful therein. The technique involves maintaining a solution of a volatile material, e.g., a solution of a non-... | 06/25/1985 |
| 4485804 | Solar heat collector system This invention discloses a solar heat collector and system in which radiant heat energy is absorbed by an absorber plate and the heat is transferred by conduction to a circulating fluid. During normal operation, heat loss from the solar panel is reduced b... | 12/04/1984 |
| 4483318 | Borehole reservoir A borehole reservoir includes a plurality of vertical boreholes (5, 6) in each of which there is arranged pipes (9, 17) for feeding water to and returning water from the boreholes. In order to avoid sealing the boreholes (5, 6) so as to prevent leakage wh... | 11/20/1984 |
| 4483322 | Water heating apparatus A water heating apparatus comprising a refrigerant loop for natural circulation which includes a hot water storage tank for holding water to be heated, a heat collecting plate for collecting solar heat, and refrigerant tubes having a refrigerant sealed th... | 11/20/1984 |
| 4483321 | Solar heat collector system This invention discloses a solar heat collector and system in which radiant heat energy is absorbed by an absorber plate and the heat is transferred by conduction to a circulating fluid. During normal operation, heat loss from the solar panel is reduced b... | 11/20/1984 |
| 4483320 | Solar powered fluid heating system A solar powered fluid heating system includes a thermal collector for vaporizing a refrigerant, a separator for removing any liquid component from the vapor component of the heated refrigerant, and a condenser for transferring heat from the refrigerant va... | 11/20/1984 |
| 4474139 | Water heater structure A water heater having an inner water tank into which cold water is passed and from which hot water is periodically withdrawn including a jacket within the inner water tank constructed of material which absorbs and gives up heat rapidly whereby on periodic... | 10/02/1984 |
| 4465060 | Curved heat exchange apparatus for solar heating and air-conditioning of premises This invention concerns an apparatus characterised in that the heat exchange surface is formed by passages with a vertical circulation, said passages being distributed in two groups, one serving for pre-heating by means of diffuse radiation and the other ... | 08/14/1984 |
| 4416258 | Heat storage means In abstract, a preferred embodiment of this invention is a heat storage tank particularly adapted for use in conjunction with solar energy systems. The tank is insulated about its entire exterior with control means being mounted in a special compartment w... | 11/22/1983 |
