本文针对太阳能热光伏系统中的能量吸收模块,建立了不同结构的灰体辐射吸收器吸收太阳能及瞬态导热过程的数理模型.通过数值模拟获得了吸收相同太阳能时各辐射器的温度分布及能量泄漏量,结果表明在四种辐射器结构中,球形辐射器具有较好的辐射热性能,更适用于STPV系统;而通过将四种不同材料的选择性辐射器和灰体辐射器比较发现,选择性辐射器可显著减小辐射能量中的不可用部分,从而提高系统性能和稳定性.
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