蒸发性墙体夏季空调冷负荷计算温度

Cooling Load Temperature for Calculation of Summer Air-conditioning Load of Evaporative Wall

为方便蒸发性墙体冷负荷计算,本文在详细的传热、传质分析基础上,给出了蒸发性墙体有效综合温度计算公式,并介绍了蒸发性墙体冷负荷计算温度的计算过程。以北京气象数据为例,分析了有、无蒸发条件下的冷负荷计算温度,发现蒸发性墙体冷负荷计算温度明显低于无蒸发墙体。进一步分析了不同朝向、不同墙体厚度、不同墙体结构对蒸发性墙体节能的影响。分析结果表明,蒸发性墙体具有很好的节能效果,对减少冷负荷波动也是有益的。

To calculate the cooling load of evaporative wall, a formula for extended sol-air temperature was put forward based on heat and mass transfer principle. Method for calculation of cooling load temperature of evaporative wall was also proposed. With the weather data of Beijing as an example, the cooling load temperatures of evaporative wall and dry wall was calculated and analyzed. It shows that the cooling load temperature of evaporative wall is obviously lower than that of dry wall. The effects of orientation, thickness and structure of wall on the energy saving potential of evaporative wall was analyzed. The results show that the evaporative wall has good energy saving potential and it also has the ability to reduce the cooling load swing.