介绍了空调机组供冷量的测试方法。并在对某机组供冷量实测的基础上,详细分析了水侧及空气侧供冷量测量的不确定度及其主要来源。结果表明,供冷量测量不确定度的主要因素是进出风干、湿球温度和进出水温度及水流量。 The test method of cooling capacity of air conditioning unit is introduced. On the basis of measuring the cooling capacity of a certain unit, the uncertainty of the cooling capacity measurement on the water side and the air side and its main sources are analyzed in detail. The results show that the main factors of measuring the uncertainty of cooling capacity are air-in and air-out, wet-bulb temperature, inlet and outlet water temperature and water flow.