Band-radiation energy-storage power generation system and array

Abstract

The invention relates to the technical field of thermoelectric conversion, in particular to a band-radiation energy-storage power generation system and its array. The band-radiation energy-storage power generation system is characterized in that the power generation system comprises a thermal radiation source, a band selective transmission device and a photoelectric conversion device; the thermalradiation source comprises a heat storage device capable of changing heat therewith; the whole or part of the space between the thermal radiation source and the photoelectric conversion device is in avacuum state; only the radiation energy of a specific band in the radiation energy of the thermal radiation source be transmitted through the band selective transmission device, the rest of the radiation energy of other bands is reflected back to the thermal radiation source, and the radiation energy of the specific band is projected to the photoelectric conversion device and converted to electrical energy. The thermoelectric conversion system with a selective-transmission thermal radiation source and its array have the advantages of achieving high photoelectric conversion efficiency while having a heat storage function at the same time, and having small energy loss, simple structural arrangement, low cost, short heat transfer distance, simple control and the like.

Description

technical field [0001] The invention relates to the technical field of thermoelectric conversion, in particular to a band radiation energy storage power generation system and an array. Background technique [0002] Thermoelectric conversion is a power generation technology that converts thermal energy into electrical energy, including the direct power generation method of thermal energy, that is, thermoelectric power generation, combining one end of two different types of thermoelectric conversion materials N and P and placing them in a high temperature state, and opening the other end And when a low temperature is given, due to the strong thermal excitation at the high temperature end, the concentration of holes and electrons is also higher than that at the low temperature end. Driven by this carrier concentration gradient, the holes and electrons diffuse to the low temperature end, thereby The open end forms a potential difference; if many pairs of P-type and N-type thermo...

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Problems solved by technology

[0004] The disadvantages of the above-mentioned indirect power generation methods are: 1. Low conversion efficiency, generally only about 10%-40%; 2. High input cost, high cost of steam turbine itself, complicated control, and long transmission distance of capacity, which is not conducive to Post-maintenance

[0006] The photoelectric conversion efficiency of photoelectric conversion devices, for example, the photoelectric conversion efficiency of polysilicon photovoltaic modules is about 20%, and the photoelectric conversion efficiency of cadmium telluride photovoltaic modules is about 21%. Conversion efficiency, while the photoelectric conversion efficiency of some bands in the full spectrum is low, which directly leads to the low conversion efficiency of photovoltaic modules

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