摘要:
It is provided a solar energy module for converting solar radiation to thermal energy. The module includes a thermally insulating element transmissive to solar radiation and having low transmissivity to thermal infra-red radiation, an absorbing element, a sealed enclosure, and a variable portion in the envelope of the sealed enclosure. This portion is adapted for varying the volume available to gas enclosed in the enclosure in accordance with changing temperature of the enclosed gas. Also, it is provided a solar energy module which includes a thermally insulating element, an absorbing surface and liquid pipes for absorbing the solar radiation, and an air duct thermally coupled thereof. The heated liquid and the heated air are usable for a variety of thermal applications. A heat storage may be thermally coupled to the absorbing surface and to the liquid pipes. The air duct has several air valves, and is associated with a controller for regulating air flow through the air duct. The controller may regulate heat flow in accordance with an optimization program, receiving inputs from several sources, like a sensor monitoring a building, a sensor monitoring the solar energy module, and an environment sensor.
摘要:
An apparatus and method for retrofitting existing solar collection panels with transparent thermal insulation facilitates upgrading existing conventional solar thermal panels with thermal insulation for the surface of the collection panel, with minimal effect on light transmission to the absorber. Use of a transparent thermal insulation panel improves the performance of an existing solar thermal panel, including, but not limited to increasing the output water temperature, operation at a lower level of solar radiation exposure, and reducing the minimum ambient operating temperature.
摘要:
In a solar heat collector, a bottom plate (1a) and a side plate (1b) of a case (1) which is opened in an upper surface are formed of a vacuum thermal insulation material (5) in which a core material (6) is enveloped by a skin (7) and a vacuum is created in an interior of the skin, the skin (7) is formed by welding together circumferential edges of two metal panels which are disposed to face each other with the core material (6) sandwiched therebetween, a plurality of line grooves (21c) are formed in the metal panels, and the two metal panels are disposed so that sides thereof from which bottoms of the line grooves protrude are oriented inwards with the core material (6) sandwiched therebetween.