夏季空调室外计算湿球温度的选用问题
Selection of outdoor design wet-bulb temperature for summer air conditioning
摘要：
介绍了我国标准和ASHRAE Standard 90.1-2010中的气候分区，分析了中美两国标准中给出的我国一些城市的夏季空调室外计算湿球温度的差异。选择我国部分典型城市，分别采用中美两国标准中给出的夏季室外计算参数计算了新风冷负荷，发现在中、低湿球温度城市二者的计算结果差别很大。相对于美国ASHRAE给出的同一城市的夏季空调室外计算湿球温度，我国标准给出的设计参数值普遍偏大，尤其是在干热气候区偏差更大，这必定导致在这类地区设计的空调系统初投资增大。
Abstract：
Presents the climatic zoning in Chinese standard and ASHRAE Standard 90.1-2010. Analyses the difference of outdoor design wet-bulb temperature for summer air conditioning for some cities between Chinese and American standards. Selecting some typical cities in China, adopts the outdoor design parameters for summer stipulated in Chinese and American standards respectively to calculate the cooling load from outdoor design air, and finds that the results in the cities with low and middle wet-bulb temperature are very different. Compared to the outdoor design wet-bulb temperature for summer air conditioning stipulated in American standard, the design parameter for the same city in our standard is generally larger, especially in dry-hot climate area, which increasing the initial cost of air conditioning system designed by our specifications.
Keywords:wet-bulbtemperature,airconditioningsystem,coolingloadfromoutdoorair,airconditioningload,dry-hotclimatearea