Solar thermoelectric generation device based on Fresnel lens and heat pipe principle

Abstract

The invention provides a solar thermoelectric generation device based on a Fresnel lens and a heat pipe principle, and belongs to the field of solar thermal power generation engineering. The device mainly comprises the point focusing type Fresnel lens, a transparent glass cover plate, a cylindrical cavity type heat absorber inner wall, a cylindrical cavity type heat absorber outer wall, annular thermoelectric generation modules, flat plate type thermoelectric generation modules, annular fins and uniform-section straight fins. Compared with other solar thermoelectric generation devices, the solar thermoelectric generation device based on the Fresnel lens and the heat pipe principle can achieve uniform heating of walls of heating ends of the thermoelectric generation modules, has the advantages of being compact in structure, few in operation parts, low in noise, reliable to operate, low in maintenance cost, convenient to adjust and good in performance, and can be used as a distribution type energy source.

Description

Technical field: [0001] The name of the invention is a solar thermoelectric power generation device based on Fresnel lens and heat pipe principle, which belongs to the field of solar thermal power generation engineering. Background technique: [0002] As a clean, non-polluting and inexhaustible energy source, solar energy has attracted great attention from scholars from all over the world and conducted a lot of research. At this stage, solar power generation technology mainly includes solar thermal power generation technology and solar photovoltaic power generation technology. The former converts solar energy into thermal energy, then converts thermal energy into mechanical energy and then converts it into electrical energy. Compared with the existing conventional thermal power generation technology, there is not much difference. But in general, the more energy conversion processes and stages, the greater the loss in the conversion process, which will increase the cost of t...

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Problems solved by technology

[0004] However, it is worth pointing out that whether it is the existing thermal power generation system composed of Fresnel lens and thermoelectric power generation module or the concentrating solar heat conversion and utilization system composed of Fresnel lens and cavity heat absorber, through the When the sunlight focused by the Nell lens directly irradiates the hot end of the thermoelectric power generation module or the inner wall of the cavity heat sink, due to the focusing characteristics of the point-focus Fresnel lens, a non-uniform temperature field will be formed on the focusing surface and even hot spots, thus adversely affecting the performance of the entire device, especially the thermoelectric conversion performance of the thermoelectric power generation module; in addition, most of the existing devices have not adopted effective measures to reduce their unnecessary heat loss. The solar radiation energy focused by the Fresnel lens is not utilized to the greatest extent, and the efficiency of the entire device is low

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