Vacuum glass covering plate PVT solar thermal collector

Abstract

The invention discloses a vacuum glass covering plate PVT solar thermal collector. The vacuum glass covering plate PVT solar thermal collector comprises a thermal collector shell, a heat preservationlayer arranged in a cavity of the thermal collector shell, a heat absorbing plate core arranged on the top surface of the heat preservation layer, photovoltaic battery panels arranged on the top surface of the heat absorbing plate core, and a vacuum glass covering plate arranged on the photovoltaic battery panels. A plurality of calandrias are arranged on the bottom surface of the heat absorbing plate core and on the upper part of the heat preservation layer. The vacuum glass covering plate is arranged at an opening of the top of the thermal collector shell and seals the heat preservation layer, the heat absorbing plate core and the photovoltaic battery panels in the cavity of the thermal collector shell. An air interlayer is arranged between the photovoltaic battery panels and the vacuumglass covering plate. The vacuum glass covering plate can improve the heat preservation performance of the thermal collector, protect the thermal collector from freezing at low temperature, and further can lower the temperature of the glass outer surface of the covering plate to reduce heat loss of the surface, so that running reliability and photo-thermal conversion efficiency of the PVT thermalcollector are further improved.

Description

technical field [0001] The invention relates to the field of solar heat collectors, in particular to a PVT solar heat collector with a vacuum glass cover plate. Background technique [0002] In recent years, with the development of social economy and the increasingly prominent environmental and energy issues, new energy technologies have attracted more and more attention in the world today. Solar energy is favored for its unlimited reserves, universality of existence and cleanness of utilization. Solar photovoltaic technology has emerged as a new pollution-free power generation technology. However, the photoelectric conversion efficiency of solar photovoltaic technology is low, and it is not easy to increase the photoelectric conversion efficiency and reduce the cost of photoelectric converters in a short period of time. PVT collectors combine traditional solar collectors with photovoltaic cells to generate hot water while cooling photovoltaic cells to improve electrical ef...

AI Technical Summary

Problems solved by technology

[0003] The flat-plate solar collector is one of the best collector types for solar energy and building integration, but the thermal insulation performance of the flat-plate solar collector is poor, and the working medium water is easy to freeze under low temperature conditions, causing the collector to rupture , tends to freeze at night

All of these limit the use of flat plate collectors in cold northern regions.

[0004] The method to prevent the collector from freezing includes the antifreeze secondary circulation method, but this method not only reduces the performance of the collector but also increases the cost; Circulation and other methods, but the use of these methods is usually accompanied by an increase in the overall system complexity, or a reduction in the thermal performance of the entire system

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