LIQUID SOLAR-HEAT COLLECTOR Russian patent published in 1995 - IPC

FIELD: solar power engineering for heating various liquids in single- and two-circuit hot water supply systems. SUBSTANCE: assembled liquid solar-heat collector has body 1 in the form of a tray with a bed plate and side walls, insulation layer 2 positioned on the foundation of body 1, heating element 3 placed in body 1 on insulation layer 2, and glass coating 4 that closes body 1 from the top. Heating element 3 is made of two metal plates 5 and 6 welded around the edges with formation of a slit-like space between them; it has an inlet and outlet branch pipes. The slit-like space of heating element 3 expands from the inlet branch pipe towards the outlet branch pipe on the side facing insulation layer 2 and has grooves whose height does not exceed the space height at the level of the outlet branch pipe. The groove width is at least 1/5 of the distance between their axes. EFFECT: enhanced efficiency. 7 dwg