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建立考虑太阳辐射加热下,含半透明相变材料(PCM)类玻璃围护结构的一维相变导热和辐射传热耦合稳态传热模型,采用控制容积法结合布格尔定律,数值求解含相变材料玻璃围护结构内部的能量传递,分析相变材料的吸收系数和折射率对其内部温度分布、热流、透光率的影响。结果表明:玻璃围护结构的内部辐射传递对其传热过程影响较大;相变材料的吸收系数和折射率的增加有利于其内部温度、热流以及透光率的提高。该结论可为新型相变玻璃围护结构的设计提供理论参考。
A one-dimensional steady-state heat transfer model coupled with radiation and heat transfer was established considering the glass envelope of translucent phase change material (PCM) considering the solar radiation heating. Using the control volume method and the Buger’s law, numerical solution The energy transfer inside the glass envelope with phase change material was analyzed. The influence of absorption coefficient and refractive index of phase change material on its internal temperature distribution, heat flux and light transmittance was analyzed. The results show that the internal radiative transfer of the glass envelope greatly affects the heat transfer process. The increase of the absorption coefficient and refractive index of the phase change material is beneficial to the increase of internal temperature, heat flux and transmittance. This conclusion can provide a theoretical reference for the design of the new phase change glass envelope structure.