Solar radiation collector unit, is small for convenience - is shaped to absorb radiation on small area, and has foam plastics plus thin metal heat exchanger

摘要

A solar heat collector consists of a number of small units which are disposed to take diffuse bundles of radiation. The product pref. uses foam styrene polymer in its structure. The prod. is made up of e.g. polyurethane foam, an inner aluminium heat exchanger and a covering window. The shape enables it to absorb max. solar radiation at noon as well as more from the sides during the afternoon. Optimal radiation intensity thus reaches the tubes inside after reflection from the sidewalls. These tubes are the heat exchanger. The design can be made to blend in with e.g. roofs in residential areas. ADVANTAGE - The size of prod. allows it to incorporate e.g. foam mouldings. The conventional thickness of internal parts allows them to be set obliquely and catch solar radiation over a wide area. The design allows a large irradiated area to act on a smaller absorbing area. The small size allows e.g. the window to be injection moulded with webs, and the heat exchanger to be cheap thin aluminium sheet (or copper) electrically welded and inflated to form e.g. worm flow ducts or simi