F - Mech Eng,Light,Heat,Weapons – 24 – J
Patent
F - Mech Eng,Light,Heat,Weapons
24
J
126/11.17
F24J 2/04 (2006.01)
Patent
CA 1196240
ABSTRACT OF THE DISCLOSURE A solar heat collector includes an outer substantially straight tube being closed at one end and open at the other end and an inner substantially straight tube being closed at one end and open at the other end. The inner and outer tubes are hermetically sealed at their open ends with the space therebetween being evacuated to a predetermined degree of vacuum. A hairpin pipe for circulation of fluid media is disposed within the inner tube and includes two substantially straight sections. One or both of the straight sections is in surface contact with the inner surface of the inner tube. pair of heat-conducting members are disposed within the inner tube and include arc portions and inwardly bent flat portions. The arc portions are semi-circular in shape and are joined to the inwardly bent flat portions through transient portions inclined at an angle .THETA. wherein 120° ? .THETA. ? 150°. The heat-conducting members are biased diametrically to ensure contact of both or at least one of the substantially straight sections of the hairpin pipe against the inner surface of the inner pipe.
410849
Mikiya Toshio
Takeuchi Hirosato
Nitto Kohki Co. Ltd.
Ridout & Maybee Llp
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