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Investigation of radiative scattering effect of VIP filler materials using a novel statistical formulation

机译:使用新型统计公式研究VIP填料的辐射散射效应

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摘要

Radiative heat transfer is investigated for each of isotropic and backward scattering patterns to evaluate the radiative thermal conduction of vacuum insulation panels (VIPs). As a means of analysis, a new statistical formulation is proposed and the results are compared with those of diffusion approximation, Monte Carlo method and discrete ordinate interpolation method (DOIM). The results of the statistical formulation agree well with those of Monte Carlo method and DOIM within 1% error, so that it may be regarded as an exact solution method. The results show that the insulation performance of the VIP can be enhanced by increasing the optical thickness or decreasing the wall emissivity. Also, the backward scattering is about twice effective than the isotropic scattering.
机译:研究了各向同性和向后散射模式的辐射热传递,以评估真空绝热板(VIP)的辐射热传导。作为一种分析手段,提出了一种新的统计公式,并将其结果与扩散近似,蒙特卡洛方法和离散纵坐标插值方法(DOIM)进行了比较。统计公式的结果与蒙特卡罗方法和DOIM的结果吻合良好,误差在1%以内,因此可以视为一种精确的求解方法。结果表明,通过增加光学厚度或降低壁发射率,可以提高VIP的绝缘性能。同样,后向散射的效率约为各向同性散射的两倍。

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