Solar flat-plate collector

Abstract

The invention relates to a solar flat-plate collector. A base plate is arranged at the opposite position of a cover plate, a support is arranged between the cover plate and the base plate, a cavity is formed by the support, the cover plate and the base plate, a header is arranged above the cavity, and a heating plate coated with a solar selective absorbing coating is installed in the cavity; a first insulating layer is arranged between one face of the heating plate and the base plate, the other face of the heating device is provided with a plurality of parallel copper heat pipes, evaporation sections of the copper heat pipes are connected with the heating plate, condensation sections of the copper heat pipes are arranged in the header, and the condensation sections of the copper heat pipes are in sufficient contact with pipe walls of runners; and the runners penetrate a cavity of the header, a second insulating layer is arranged in a gap in the cavity of the header, the cover plate is made of vacuum glass and hollow glass, and one face or two faces of the inner surface of the glass is / are plated with an infrared reflection film. The solar flat-plate collector is provided and relates to the field of solar equipment, the heat collecting efficiency of the collector can be improved, and the problems that scale and ice are prone to being formed in the pipes, and frosting is prone to generation on the cover plate are solved.

Description

technical field [0001] The invention relates to the field of solar energy equipment, in particular to a solar panel heat collector. Background technique [0002] Solar collectors are the key equipment of solar water heaters, and the development of new and efficient solar collectors is of great significance to the promotion of solar thermal utilization technology. The ordinary heat-pipe flat-plate solar collectors on the market in my country now have simple structure, low price, and convenient maintenance. However, after years of extensive use, the following problems need to be solved urgently: ①The heat loss on the surface of the collector is large, and the heat collection efficiency is low; ②Scaling in the pipe, which significantly reduces the efficiency of the water heater; ③Icing in the pipe, in the cold winter, the water in the water heater pipe freezes and expands in volume, causing the pipe to burst; ④Air corrosion in the pipe. Other new heat pipe flat solar collectors...

AI Technical Summary

Problems solved by technology

The ordinary heat-pipe flat-plate solar collectors on the market in my country now have simple structure, low price, and convenient maintenance. However, after years of extensive use, the following problems need to be solved urgently: ①The heat loss on the surface of the collector is large, and the heat collection efficiency is low; ②Scaling problem in the pipe, which significantly reduces the efficiency of the water heater; ③Icing problem in the pipe, in the cold winter, the water in the water heater pipe freezes and expands in volume, causing the pipe to swell; ④Air corrosion problem in the pipe

Other new heat pipe flat solar collectors such as honeycomb heat pipe flat solar collectors have large heat loss in the high temperature section, while heat pipe vacuum tube solar collectors have poor pressure bearing performance, are easy to be damaged, exploded, and easy to scale and not easy to build

This has brought inconvenience to the practicality of solar collectors.

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