COMBINED SOLAR AIR-AND-WATER MANIFOLD Russian patent published in 2015 - IPC F24J2/24 

FIELD: heating.

SUBSTANCE: in a combined solar air-and-water manifold containing an upper wall in the form of a transparent opening, an air heating cavity with a sun-receiving surface inside it, which is formed with semi-spherical cavities, into the sun-receiving surface there half-embedded diametrically are liquid heat carrier transportation tubes, with that, internal and external surfaces of liquid heat carrier transportation tubes are formed throughout their length with semi-spherical cavities sufficiently intensifying heat exchange and reducing hydrodynamic resistance in tubes at transportation in them of liquid heat carrier, and geometrical parameters of the semi-spherical cavities h, Dl and Z on the sun-receiving surface and on the internal and external surfaces of liquid heat carrier transportation tubes are determined from the following ratios: h=0.2·r, where h - depth of a semi-spherical cavity, r - radius of a semi-spherical cavity; Dl =2h/tgα/4, where Dl - diameter of a semi-spherical cavity, α - fundamental angle of the semi-spherical cavity, with that, 45°<α<180°; Z~10·h, where Z - distance between semi-spherical cavities.

EFFECT: use of a regenerative heat exchange circuit providing simultaneous heating of two types of heat carriers.

3 dwg