| 摘要 |
<p>This invention relates to solar energy collectors, and more especially to evacuated solar energy collectors comprising a housing forming a chamber. The chamber has a transparent top member and bottom member which are joined together along the tims, thereby providing an airtight seal, the top and bottom members each having a surface convex to the outside whereby the chamber resists the external atmospheric pressure while having a relatively large absorber area to collector area ratio. The bottom member of the collector can have a reflective surface to reflect the solar energy upon the underside of the heat absorbing unit, which is a spiralled tubular element retained within the collector. Furthermore, a system of solar energy collectors can be constructed so that the top members of the chambers receive solar radiation during the day, and mirrors situated in the interstices between adjacent collectors direct solar energy to transparent lower surfaces of the collectors, the low profile of each chamber facilitating the architectural integration of the collectors in close-packed arrays.</p> |
