| Patents for F24J 2 - Use of solar heat, e.g. solar heat collectors (51,924) |
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| 04/17/1991 | CN1050763A Method and equipment for thermal pipe vacuum tube air exhaust |
| 04/17/1991 | CN1050696A Technology for making strip-type hot tube vacuum pipe |
| 04/16/1991 | US5007244 Disaster prevention system and construction for an underground space |
| 04/11/1991 | DE4014189A1 Reflector for concentrating solar radiation - has inner and outer mirrors of elliptical or hyperbolic form |
| 04/11/1991 | DE3933734A1 Solar energy powered heater for buildings - has air duct(s) between outer and inner building surface with outer and inner aperture(s) |
| 04/11/1991 | DE3933733A1 Solar radiation receiver - with silicone sealed intermediate piece for two tube parts enclosing collector tube |
| 04/11/1991 | DE3932972A1 Cooling or heating element - using air or water in channels of core between two cover layers |
| 04/11/1991 | DE3931594A1 Heat insulating, transparent outer building wall component - has outer panel with numerous optical elements, with focal planes in heat insulating layer plane |
| 04/10/1991 | CN2074891U Multi-function solar-energy air conditioner |
| 04/09/1991 | US5005958 High flux solar energy transformation |
| 04/09/1991 | US5005557 Heat-insulating building and/or light element |
| 04/09/1991 | US5005360 Solar energy system for generating electricity |
| 04/09/1991 | CA1282658C Solar module |
| 04/04/1991 | WO1991004580A1 Photovoltaic solar systems with dispersive concentrators |
| 04/04/1991 | WO1991004403A1 A device and method in connection with collectors for solar energy, heat carrying wall elements and similar |
| 04/03/1991 | CN2074436U Reflecting solar water heater |
| 04/03/1991 | CN2074435U Solar heat collector |
| 03/28/1991 | DE3933133A1 Cover for collectors or windows - consists of foil stretched over frame and made taut by pneumatic source |
| 03/28/1991 | DE3931347A1 Hot steam pipes in solar energy system - are thermally insulated by corrugated pipes with vacuum, held by spacer pieces |
| 03/28/1991 | DE3930833A1 Solar energy assisted heat exchanger - uses hot waste water and can be installed on existing buildings |
| 03/28/1991 | DE3929537A1 Heat ray reflector for solar cooker - consists of number of flexible discs perforated around edge to form parabola |
| 03/26/1991 | US5002379 Bypass mirrors |
| 03/20/1991 | EP0417303A1 Roof collecting solar energy |
| 03/12/1991 | US4999483 Sensor for detecting two dimensional angle of incidence of the sun |
| 03/12/1991 | US4999059 Universal solar concentrator panel |
| 03/07/1991 | WO1991002930A1 Device for securing and supporting solar units |
| 03/06/1991 | EP0233213B1 Improvements in or relating to thermally insulating glazing |
| 03/06/1991 | CN2072664U Whole frost-proof solar hot tube hot water unit |
| 03/06/1991 | CN2072663U Solar energy hot-water unit |
| 03/01/1991 | CA2023305A1 Solar energy system |
| 02/28/1991 | DE3928257A1 Compressor for collecting energy from sun - has series of parallel tubes with mirrored surfaces swinging on light frame orientated to angle of sun |
| 02/28/1991 | DE3928100A1 Roof covering for house extensions, greenhouses, sheds - has plastic sheet base heat insulating layer, water resistant layer and external weather resistant cover of overlapping strips |
| 02/28/1991 | DE3927947A1 Device for controlling light transmission from sun - comprises focussing element together with reflectors and highly transparent elements |
| 02/27/1991 | EP0250487B1 Evacuated solar collector tube |
| 02/27/1991 | CN1011817B Cheap solar energy vacuum heat-collecting tube and method for mfg. the same |
| 02/26/1991 | US4995377 Dual axis solar collector assembly |
| 02/21/1991 | DE3926967A1 Vorrichtung zur festlegung und abstuetzung von kollektorelementen Apparatus for lockup and supporting of collector elements |
| 02/20/1991 | CN2071771U Zero energy consumption automatic solar energy tracker |
| 02/20/1991 | CN1049407A Automatic tracking system of solar stove using solar heat |
| 02/20/1991 | CN1011737B Heating and boiling device with heat-accumulating block |
| 02/19/1991 | US4993403 Method and apparatus for trapping heat energy |
| 02/19/1991 | US4993235 Window, facade and wall system |
| 02/19/1991 | US4993234 Solar collector absorption cooling system |
| 02/13/1991 | CN2071313U Cross reflection butterfly solar stove |
| 02/13/1991 | CN2071312U Hollow light-focusing solar water heater |
| 02/13/1991 | CN2071183U Complex heating asphalt device by solar energy-heat conducting oil |
| 02/07/1991 | WO1991001449A1 Solar augmented power system |
| 02/05/1991 | CA1279783C Totally internally reflecting thin, flexible film |
| 01/31/1991 | DE4009754A1 Solar concentrator - made of aluminised plastic foil and transparent plastic foil connected together at their peripheries |
| 01/29/1991 | WO1991002199A1 Process and device for converting solar energy to heat |
| 01/29/1991 | US4987883 Heat exchanger |
| 01/29/1991 | CA2065391A1 Process and device for converting solar energy to heat |
| 01/24/1991 | DE3923821A1 Solar collector combined with photovoltaic collector - has UV and visible radiation passed through IR absorbing thermic collector onto photovoltaic collector |
| 01/24/1991 | DE3923408A1 Lightweight construction for insulated chambers - in which tubes supporting the chamber walls also carry heat exchange fluid for heating or cooling the chamber contents |
| 01/23/1991 | EP0408816A1 Solar augmented power system |
| 01/23/1991 | EP0408576A1 Processing apparatus |
| 01/23/1991 | CN2069987U High-efficient solar water heater capable of using yearly |
| 01/22/1991 | US4986255 Apparatus pursuing the sun |
| 01/17/1991 | DE3922903A1 Solar heated heat exchanger for high temperatures - comprises battery of fluid carrying pipes wound round in tight coil as jacket for exchanger |
| 01/17/1991 | DE3922153A1 Optical sensor with electro=optical converter and lens - uses low-dispersion property of aspherical lens whose two ellipsoidal faces have major semi-axes orthogonal |
| 01/16/1991 | EP0408426A1 Wall cladding element consisting of a glass panel and a metal panel |
| 01/16/1991 | CN2069544U Thermal insulation device for solar energy water heater |
| 01/16/1991 | CN2069543U Solar cooking stove used in buliding balcony and acted as multiple focusing antenna concurrently |
| 01/10/1991 | WO1991000482A1 Vacuum solar collector |
| 01/10/1991 | DE3920186A1 Solar radiation collector mirror is inflated balloon - with one half transparent, for light, cheap easily transported structure |
| 01/10/1991 | DE3920012A1 Hybrid solar energy converter protected against temp. fluctuations - responds to decrease of sunlight with adjustment of fossil-fuel burner adjacent to heat storage element |
| 01/09/1991 | CN2069092U Shell and tube heat changer type domestic solar heater |
| 01/08/1991 | US4982723 Solar energy |
| 01/08/1991 | CA1278771C Solar reflector with transparent base and transparent films of metal oxide or nitride and metal |
| 01/03/1991 | DE4011289A1 Glazed ceramic or glass solar collector - is in form of roof tile and comprises zigzag tube enclosed in cover |
| 01/02/1991 | CN2068665U Multi-energy mutual compensation direct flow combined solar heating unit |
| 01/01/1991 | US4981172 Mechanism for heat transfer |
| 12/28/1990 | WO1991000488A1 Method and apparatus for heat exchange, where channels, e.g. tubes, are secured in recesses in heat-isolating boards |
| 12/28/1990 | CA2062813A1 Method and apparatus for heat exchange where channels, e.g. tubes, are secured in recesses in heat-isolating boards |
| 12/26/1990 | CN2068218U 太阳能热水器 Solar water heaters |
| 12/25/1990 | US4979494 Solar cooking apparatus |
| 12/25/1990 | US4979493 Solar heater system |
| 12/25/1990 | US4979492 Solar ray collecting device |
| 12/20/1990 | DE3919507A1 Zeltdach Tent roof |
| 12/19/1990 | CN2067809U Sunlight tracking device driven by controllable potencial energy |
| 12/19/1990 | CN1010882B Improved solar energy tracking structure |
| 12/18/1990 | US4978458 Sterilization with high density solar beams, decomposition of of microorganisms |
| 12/18/1990 | US4977744 Apparatus and method for extracting focused solar radiant energy |
| 12/13/1990 | DE3919125A1 Floating solar collector - made of solar cell foils welded between specified light-weight crosslinked plastic foils |
| 12/11/1990 | US4976119 Piston-type apparatus for expressing water from laundry |
| 12/06/1990 | DE3744829C2 Solar plant with plane surface absorbers or solar cells |
| 12/05/1990 | EP0400367A2 Exterior wall element for buildings |
| 12/05/1990 | CN2066958U Household solar water heater |
| 11/30/1990 | CA2016542A1 External wall element for buildings |
| 11/29/1990 | WO1990014477A1 A building structure apparatus |
| 11/28/1990 | EP0399381A1 Solar receiver having wind loss protection |
| 11/27/1990 | US4973511 Composite solar/safety film and laminated window assembly made therefrom |
| 11/27/1990 | US4972529 Protective blanket for a solar pool cover |
| 11/22/1990 | DE4014200A1 Frameless solar generator - with solar cell laminate resting on profiles with silicone adhesive pads |
| 11/22/1990 | DE3916124A1 Frameless solar cell module - with inclined rim extension of support bracket reflecting solar radiation on cell edges |
| 11/21/1990 | CN2066122U Domestic solar energy water-heating unit |
| 11/20/1990 | US4971029 Solar heaters |
| 11/20/1990 | US4971028 Solar heat collector and insulation panel construction |
| 11/20/1990 | CA1276405C Above ground swimming pool with improved rib structure and modular deck panels for solar heating of pool water |
| 11/15/1990 | WO1990013777A1 Nonimaging radiant energy device |