| 摘要 |
An improved solar apparatus for heating above 100 DEG C. is disclosed. Said apparatus comprises a solar collector means for heating a heat transferring gas, ducting means extending from said solar collector means for permitting moving of said gas past a heat storage medium whereby heat in said gas will be transferred to said heat storage medium by directly contacting said heat storage medium, flow control means provided in said ducting whereby to permit said gas to flow to said heat storage medium when said solar collector means is radiated by the sun, and to permit said gas to pass through said heat storage medium for recovery of heat therefrom when said solar collector means is not radiated by the sun. The solar collecting means includes a plurality of collectors, each collector comprising two elongate concentric tubes connected together at each end to provide an annular space therebetween, said annular space being evacuated and wherein the outer surface of the inner tube has a selective surface to enhance solar energy absorption, said inner tube providing a passageway for said gas to be heated by said collector, and wherein said plurality of collectors are interconnected with others at their ends and to said ducting means so that said gas can pass therethrough and be heated and then passed into said ducting means at a temperature in excess of 100 DEG C. |
