Energy consumption analysis of indirect evaporative cooling air conditioning for data centers in different climate zones

In order to analyse the energy consumption of indirect evaporative cooling air conditioning for data centers in different climate zones in China, eleven cities in five climate zones are selected to analyse the annual power consumption, water consumption and operating costs of a single indirect evaporative cooling air conditioning unit. The results show that the drier the outdoor climate is, the longer the dry mode operation time of indirect evaporative cooling air conditioning is. The application of indirect evaporative cooling air conditioning to temperate zones has high energy saving potential. The annual operating cost of units in high temperature and humidity area is obviously higher than that in other areas. Compared with the annual operating electricity cost, the proportion of annual operating water cost is very small. So when designing air conditioning for data centers, the power consumption of air conditioning system should be considered to save energy and reduce the power utilization efficiency (PUE).