本文探讨了中央空调系统冷水机组的功耗通用数学模型及其推导过程,该模型为半经验模型。通过冷却水变流量运行条件下的实验数据验证了该模型的与准确性,并在此基础上用另两种方法进行简单的修正,通过对比三种方法的功耗计算结果,发现修正后的模型具有更高的通用性。 This paper discusses the general mathematical model of power consumption and its derivation process for chiller of central air conditioning system. The model is a semi-empirical model. The experimental data under the conditions of variable flow of cooling water have been used to verify the accuracy of the model. On the basis of this, two simple methods are used to make the simple correction. By comparing the power calculation results of the three methods, it is found that the corrected Model has a higher versatility.