干燥气候区的湿球温度及其对冷却水温度的影响
Wet-bulb temperature in dry climate areas and its effect on cooling water temperature
摘要：
比较了我国标准对冷却塔设计用室外湿球温度的不同规定，并与ASHRAE手册进行了比较。分析了室外湿球温度对冷却塔出水温度的影响。从干燥气候区的实际工况出发，计算得到西北地区各典型城市及新疆20个县市的冷却塔出水温度。结果显示，新疆各县市冷却塔室外计算湿球温度为17～23 ℃时，冷却塔出水温度为26～30 ℃。指出了工程技术人员应注意的问题。
Abstract：
Compares the definitions on the outdoor wet-bulb temperature for cooling tower design in the different China codes and also with those in the ASHRAE handbook. Analyses the influence of outdoor wet-bulb temperature on cooling water outlet temperature. Based on the actual working condition in dry climate areas, calculates the cooling tower outlet water temperatures of typical cities in Northwest areas of China and twenty counties and cities in Xinjiang. The results show that the cooling tower outlet water temperature is in the range of 26 ℃ to 32 ℃ when the outdoor design wet-bulb temperature of cooling towers in the counties and cities of Xinjiang is controlled between 17 ℃ and 23 ℃. Points out the problems which engineers should pay attention to.
Keywords:wet-bulb temperature, cooling tower, cooling water temperature, dry climate area, code