A solar thermal conversion system

Abstract

The invention provides a solar photothermal conversion system. The system is allowed to absorb higher quantity of heat, is reasonable in design and allows high efficiency of photothermal conversion. The upper end face of a shell structure is covered by a glass cover plate. An inner chamber of the shell structure is internally provided with heat-absorbing plates; two ends of the shell structure are provided with a medium inflow end and a medium outflow end, respectively. The system is characterized in that the shell structure comprises a bottom plate, two end plates and two side plates; air is used as working medium; two ends of the shell structure are provided with an inlet air pipe and an outlet air pipe, respectively; two ends of the shell structure are both provided an air inlet and an air outlet, respectively; an inner cavity of the inlet air pipe is communicated with the air inlet; an inner cavity of the outlet air pipe is communicated with the air outlet; the heat-absorbing plates are corrugated plates arranged along an air inflow pipeline; insulation material is attached to each of the end plates of the shell structure and the inner walls of the side plates.

Description

technical field [0001] The invention relates to the technical field of solar energy utilization, in particular to a solar light-to-heat conversion system. Background technique [0002] The working principle of the existing flat-plate solar heat collector is that the solar radiation penetrates the glass cover plate and irradiates the heat-absorbing plate with a special coating on the surface, and the temperature of the heat-absorbing plate increases after absorbing the solar radiation. On the one hand, the heat is transferred to the working fluid in the collector flow channel. After the temperature of the working fluid rises, it is output as useful energy; on the other hand, it also dissipates heat to the surroundings at the same time. The insulation material plays the role of reducing heat dissipation, and the role of the transparent cover plate is to allow the solar radiation to pass through and prevent the heat-absorbing plate from dissipating heat directly to the surround...

AI Technical Summary

Problems solved by technology

However, when the existing structure is arranged, because the heat absorbing plate is a flat plate, the heat absorption is low, and due to the unreasonable size design, the efficiency of the entire light-to-heat conversion is low

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