Frequency divided type solar full-spectrum utilizing system with low concentrating photovoltaic-high concentrating photothermal / thermoelectric coupling

Abstract

The invention provides a frequency divided type solar full-spectrum utilizing system with low concentrating photovoltaic-high concentrating photothermal / thermoelectric coupling. The solar full-spectrum utilizing system comprises a high power frequency divided concentrator based on low concentrating photovoltaic, a photothermal / thermoelectric composite heat collector tube, a photothermal second-grade concentrator and a real-time sunlight tracking system. The high power frequency divided concentrator based on low concentrating photovoltaic comprises spectrum selective transmission glass, a lower concentrating photovoltaic concentrator, a photovoltaic battery and heat dissipating fins. The photothermal / thermoelectric composite heat collector tube comprises a glass outer pipe, a ring type metal inner pipe, a glass inner pipe and a thermoelectric device, wherein the glass outer pipe, the ring type metal inner pipe, the glass inner pipe and the thermoelectric device are coaxially arranged. According to the solar full-spectrum utilizing system, electricity generating can not only be conducted through photovoltaic, thermoelectricity and a heat engine, but also thermochemistry stored energy can be utilized, so that high efficiency utilizing of the solar full spectrum is realized. Furthermore, the solar full-spectrum utilizing system is low in cost, broad in application scope, high in social and economic benefit and wide in market prospect.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, and in particular relates to a frequency-division low-power concentrating photovoltaic-high power concentrating light-heat / thermoelectric coupling solar energy full-spectrum utilization system. Background technique [0002] Whether it is the gradual depletion of fossil energy or the increasingly serious environmental problems, renewable green energy represented by solar energy has attracted more and more attention. At present, the most promising solar energy utilization methods are: photovoltaic, thermoelectric and photothermal. [0003] Solar photovoltaic cells use the photovoltaic effect to convert part of sunlight directly into electrical energy. Due to the limitation of the band gap of semiconductor materials, the sunlight that photovoltaic cells can use is mainly concentrated in the visible light range (wavelength from 300nm to 800nm), so the Shockley theoretical limit of t...

AI Technical Summary

Problems solved by technology

Although this can realize the full-spectrum utilization of solar energy, the whole process needs to first convert solar energy into lower-grade thermal energy, and then convert it into electrical energy or chemical energy, which leads to low utilization efficiency of full-spectrum solar energy.

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