Solar heat collector

Abstract

The invention belongs to the field of solar application, and discloses a solar heat collector. A heat collector of a known solar water heater is poor in heat-insulating property and low in efficiency because just a layer of transmitting glass is arranged on a plate core to keep warm. The solar heat collector is technically characterized in that a heat exchange pipe (3) is bonded to a semicircular groove on the surface of a heat-absorbing plate (4) to be the plate core; the plate core is arranged in the middle of a vacuum glass box body composed of a lower half box (1) and a cover plate (2) having homogeneous support columns, so that a vacuum heat-insulating layer is formed between the plate core and the glass box body, and a reflecting layer is arranged on the back side of the plate core, so that three heat transfer modes are cut off; the heat-insulating effect is better, and the water temperature can be up to over 90 DEG C. The heat collector is efficient, low in cost, long in service life, lighter, thinner, easier to be integrated with walls of buildings due to a vacuum technology and a bonding technology. A vacuum plate also can enhance the heat preservation and insulation performances of a building wall body, and facilitates the development of green buildings.

Description

technical field [0001] The invention belongs to the field of solar energy applications, in particular to solar flat water heaters. Background technique [0002] The known solar heat collector consists of a box body and a plate core arranged in the box body. The box body is composed of a half box body (1) and a transparent cover plate (2), and the plate core is fixed on a heat absorbing plate (4). Surface heat exchange tubes (3) constitute. The transparent cover plate is flat glass. Since the core is only covered with a layer of glass, the thermal insulation effect is poor, and because the thermal insulation layer under the core is thick and heavy, it cannot be better integrated with the building. The heat exchange tube and the heat absorbing plate are welded by laser, and the cost is relatively high, so improvement is needed. Contents of the invention [0003] The object of the present invention is to provide a solar heat collector with good thermal insulation effect, hi...

AI Technical Summary

Problems solved by technology

The transparent cover plate is flat glass. Since the core is covered with only one layer of glass, the thermal insulation effect is poor, and because the thermal insulation layer under the core is thick and heavy, it cannot be better integrated with the building.

The heat exchange tube and the heat absorbing plate are welded by laser, and the cost is relatively high, so it needs to be improved

Images