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热光伏发电是光伏电池将高温辐射释放的光子直接转换为电能的技术,具有对多种燃料的适应性、无运动部件、高功率密度等优点而备受关注。采用液化石油气为燃料,针对美国JX Crystals公司生产的GaSb电池,设计了基于多孔介质燃烧器的热光伏发电系统。研究了不同燃料量和空气流量的条件下,热光伏系统中碳化硅多孔介质燃烧器的温度分布规律和电池运行温度变化规律。分析不同燃烧工况下,电池开路电压和短路电流的变化规律,并总结了电池最大输出功率的特点。试验结果表明,随着燃料量的增加,燃烧器的外壁温度和电池运行温度都有所提高,过量空气过多会降低燃烧器温度;电池的短路电流随着燃烧器温度的提高而增加,开路电压随着电池运行温度的降低而略有提高。
Thermal photovoltaic power generation is a technology that photovoltaic cells directly convert photons emitted by high temperature radiation into electric energy and has the advantages of adaptability to various fuels, no moving parts and high power density. Using liquefied petroleum gas as fuel, a thermal photovoltaic power generation system based on porous media burner was designed for the GaSb battery produced by JX Crystals in the United States. The law of temperature distribution and operating temperature of the SiC porous media burner in the thermal photovoltaic system under different fuel quantity and air flow were studied. Under different combustion conditions, the open-circuit voltage and short-circuit current were analyzed. The characteristics of the maximum output power of the battery were summarized. The experimental results show that with the increase of fuel quantity, the outer wall temperature of the burner and the operating temperature of the battery increase. Excess air excessively decreases the burner temperature. The short circuit current of the battery increases with the increase of the burner temperature. The voltage increases slightly with decreasing battery operating temperature.