Description

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. Features - Utilization all year round even in cold climates; - Can operate with water pressure up to 0.6MPa; - The collector will still operate in the event of occasional tube breakages; - Modular system means easy handling, installation and can be extended to cover larger areas; 7 panels can be connected in series. - Easy to install on roofs, balconies or fa? Ades; - Can be combined with existing energy source; - Quasi-tracking in all seasons. Controlling Solution - Temperature differential control; - **0V AC output to control pump and electric resistor; - Large liquid crystal (LCD) display; - Back up energy source control; - Frost protection; - Remote monitor optional