蒸发冷却-机械制冷空调机组现场测试与性能分析

Field test and performance analysis of evaporative cooling-mechanical refrigeration air conditioning units

对西安某数据中心蒸发冷却与机械制冷联合空调机组过渡季节的运行参数进行了测试,得到了温度、相对湿度、风量、制冷量等参数。结果表明,间接蒸发冷却器效率为58%,直接蒸发冷却器效率为86%,间接-直接两级蒸发冷却器效率为115%;风机、风管温升形成的负荷占总冷负荷比例为24.28%,其对总冷负荷的影响不能忽略。

Tests the operation parameters of evaporative cooling-mechanical refrigeration air conditioning unit of a data center in Xi＇ an during transition season,and obtains the performance parameters including temperature,relative humidity,air volume and refrigerating capacity.The test results show that the efficiency of the indirect evaporative cooling is 58%,while that of the direct evaporative cooling and the indirect-direct two-stage evaporative cooling is 86% and 115%,respectively.The ratio of the cooling load by both fan and duct temperature increase to the total cooling load is up to 24.28%,whose influence on total cooling load cannot be omitted.