地面边界条件对室内热环境的影响

摘要

建立了无空调工况下单幢建筑室内热环境模型,通过数值分析地面边界分别为第一类和第二类边界条件对其室内空气平均温度逐时分布的影响,结果表明:在土壤层深度在6m以内,两类边界条件对室内空气平均温度的逐时分布影响较大；随着土壤层深度增大,其差别变小；当土壤层深度达到6 m以上,两类边界条件对室内平均温度的逐时分布曲线影响较小,两类边界条件可认为等效.%The model of indoor thermal environment in single architectural without air conditioning was established. The numerical analysis of influence on the average temperature distributed hourly of the indoor air with surface boundary conditions that are the first boundary condition and the second boundary condition are gwen. The results show that there are great influences of the two surface boundary conditions on the average temperature distributed hourly of the indoor air, when the depth of soil layer less than 6 m . However with the depth increases, the temperature difference becomes smaller. The depth of the soil layer beyond 6 m, the difference becomes weak. And the two surface boundary conditions could be considered as equivalent.