Thermo-photovoltaic direct conversion power generating device

Abstract

The invention discloses a thermo-photovoltaic direct conversion power generating device. In the device, an upper base, a middle base and a lower base are fixed on a shell; one end of a fuel tube vertically passes the upper base and the middle base from the central axis and is vertically connected with the lower base, and communicated with an external fuel inlet arranged on the lower base, and the other end of the fuel tube is connected with a blast cap and an air spoiler; the periphery of the fuel tube is provided with a finned tube; a fume tube is arranged on the periphery of the finned tube; a silicon carbide tube is directly used as a thermal radiation face, and the lower end of the silicon carbide tube is arranged at the upper end of the finned tube; the upper end of a quartz glass tube is closed and covered on the silicon carbide tube, and the lower end of the quartz glass tube is arranged on the upper base; and a battery plate is arranged on the periphery of the quartz glass tube, and the back surface of the battery plate is provided with battery radiating ribs which are arranged between an upper end cover and the upper base. By the device, the heat energy released during combustion of fuel can be converted into the radiation energy, and the radiation energy is further converted into the electric energy by the photovoltaic battery; and the device can effectively improve the stability of flame and ensure complete combustion of flame.

Description

technical field [0001] The invention belongs to power generation technology, in particular to a thermo-photovoltaic direct conversion power generation device. Background technique [0002] The thermal photovoltaic power generation device converts the heat generated by various fuel combustion heat, waste heat, solar energy, radioactive isotope heat sources, etc., into infrared radiation energy through the thermal radiation emitting surface, and the radiation energy is projected onto the thermal photovoltaic cell and converted Electrical energy device. Thermal photovoltaic power generation devices can theoretically obtain high conversion efficiency, and have the advantages of adaptability to various fuels, no moving parts, easy maintenance, high power density, noiseless operation, and low radiation. The system has not been practically applied yet. The main problem is that its thermoelectric conversion efficiency is low. The main problems lie in the following aspects: first, h...

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Problems solved by technology

[0005]Although they adopted various measures to improve the conversion efficiency of the thermal photovoltaic power generation system, the results were still not very satisfactory. The main problem was that although the heat recovery system was adopted, the combustion The methods are all ordinary diffusion combustion, the conversion of heat energy into effective radiation energy is relatively small, and the outer wall of the burner is used as the heat radiation surface. Since only one side of the heat radiation surface is heated and the other side is radiated to dissipate heat, the heat radiation If the surface reaches the temperature required by thermal photovoltaics, the temperature inside the combustion chamber will be much higher than the temperature of the outer surface, and the temperature of the exhaust gas will also increase accordingly, which will cause higher waste heat loss; at the same time, due to the higher internal temperature, it will also increase Difficulties in thermal insulation of the structure, resulting in an increase in heat dissipation of the structure

Although Ed Horne uses double-layer quartz glass, and vacuumizes the middle of the quartz glass for heat insulation to reduce structural heat dissipation, the optical filter is installed on the outer quartz glass. Since the optical filter and the quartz glass are bonded, it is easy to cause Vacuum leaks, and the glue at the bonding point has a high absorption rate of thermal radiation, which can easily cause the temperature at the bonding point to be too high, affecting the vacuum degree and the efficiency of the filter, thereby affecting the conversion efficiency, but Edward Doyle et al. did not use Vacuum heat insulation measures, the heat loss in this part is relatively large

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