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建立了墙体热传递一维非稳态物理模型及数学模型 ,对室外空气温度发生周期性变化和线性变两种不同情况下建筑墙体温度分布及热流分布进行了数值模拟。对两种不同室外温度变化情况下建筑墙体温度分布及热流分布用数理统计法进行了比较 ,得出了室外空气温度发生周期性变化及线性变化时建筑墙体的温度分布及热流分布显著不同的结论。所以 ,在计算建筑围护结构温度分布及传热量时 ,应考虑室外气温的变化特点 ,否则将产业较大的误差
A one-dimensional unsteady physical model and mathematical model of heat transfer in a wall were established. The temperature distribution and heat flow distribution in a building wall were numerically simulated under two different conditions: periodic change of outdoor air temperature and linear change. The temperature distribution and heat flow distribution of the building wall under two different outdoor temperature changes were compared by mathematical statistics. The results showed that the temperature distribution and the heat flow distribution of the building wall body were significantly different when the outdoor air temperature changed cyclically and linearly Conclusion. Therefore, in calculating the temperature distribution of building envelope and heat transfer, outdoor temperature should take into account changes in the characteristics of the industry, otherwise the larger error