| 摘要 |
For use in heating or cooling a building, there is provided a solar energy collecting system which includes a solar energy collecting device comprising a trough having internal surfaces for reflecting the rays of the sun onto solar energy collecting plates positioned in the trough, the internal reflecting walls of the trough and the positioning of the plates therein being such that the concentration of the sun's rays on the collecting plates varies depending on the angle of the sun with respect to the solar collecting device which itself is stationary. Each of the collecting plates is associated with a pipe which carries fluid which is heated by the sun's rays. The system includes thermostatically controlled valves associated with each of the collecting plates for selectively transferring to storage only that fluid which has been heated to a predetermined and sufficiently high temperature.
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