电动设备冷负荷计算新方法
New method for calculating cooling load of electrical equipment
摘要：
由电动机带动的工艺设备的输入功率就是电动设备的发热量，而电动设备在工作班内的平均输入功率就相当于电动设备向室内空气的散热量。通过计算电动设备的输入功率或平均输入功率就可以确定电动设备向室内空气的散热量，并确定由此而引起的冷负荷。用计算电气负荷的方法来确定电动设备引起的冷负荷，概念清楚，计算正确，比惯用的空调计算方法算出的负荷小很多，从而可以减小空调系统设备容量和配电变压器的安装容量，节约初投资和运行费用。
Abstract：
The input power of process equipment driven by electric motor is the heat diffused by the electrical equipment and the average input power of the electrical equipment in a work shift is equivalent to the heat diffused by the equipment. The heat diffused by the equipment can be determined after obtaining by calculation the input power or average input power of the equipment. Thus, the cooling load resulting from the heat can be determined. The method that the cooling load resulting from the equipment is determined by means of calculating electric load is clear in concept and correct in result. The load obtained by the method is much smaller than that by the conventional method. Hence, the capacity of an air-conditioning system and distribution transformer can be decreased. The initial investment and the operation cost can be saved.
Keywords:electricalequipment,inputpower,heatrelease,coolingload,utilizationfactor