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建筑内壁面传热是一种导热、对流和辐射共存的复合传热过程,基于Gebhart辐射模型,建立建筑壁面传热同步模型,可同步计算壁面温度和空气温度,在此基础上分析建筑壁面对流辐射传热特性。研究结果表明:传热同步模型的空气温度理论计算值小于实测值,偏差均在0.25℃以内;壁面温度计算值与实测值的偏差基本在1℃以内。并对南墙加热壁面与地板的导热传热、对流传热及辐射传热进行分析。研究结论为进一步应用Gebhart辐射模型和研究壁面的对流辐射传热提供了参考依据。
The heat transfer on the inner wall of the building is a composite heat transfer process in which heat, convection and radiation coexist. Based on the Gebhart radiation model, a synchronous heat transfer model of building wall is established, and the wall temperature and air temperature can be calculated simultaneously. Based on this analysis, Radiation heat transfer characteristics. The results show that the calculated theoretical air temperature of the heat transfer synchronous model is less than the measured value, and the deviations are within 0.25 ℃. The deviation between calculated and measured wall temperature is within 1 ℃. The heat transfer, convection heat transfer and radiative heat transfer of the heated wall and the floor of the south wall were analyzed. The conclusions of the study provide a reference for further application of the Gebhart radiation model and study of convective radiation heat transfer on the wall.