U tube collector uses evacuated tubes as the absorber tube, each glass tube is fitted with an aluminum contact fin which serves to be the heat transfer contact and also fixes the copper pipe against inner wall of the glass tube.   The copper pipe is formed in an “U” shape, within which the collector fluid absorbs and transfers the heat to the collector header.

U tube collector header comprises two separate copper pipes, each one has been welded to one end of the “u” copper tube

and the pump selection ensures the optimum thermal transfer of the whole system.  The header is insulated with polyurethane foam and encased with an UV stabilized galvanized Au-profile.

U tube ollector header structure and material are able to withstand stagnation without damage, if stagnation does happen. A pressure relief valve has been installed in the solar loop to ensure the collector, as well as the system, remains safe under stagnation conditions.

Collector is mostly suitable to be used in split-up systems; The collector can be fixed on a flat roof, tile roof, or corrugated iron sloped roof.

   

    U-16/58-1800 collector test report (ITW, Stuttgart University, Germany)

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