Research On Air Conditioning System For Reducing The PUE Value Of Data Center

In recent years,with the rapid development of data centers,its energy consumption is rising,and the air conditioning system energy consumption accounts for a considerable proportion of the energy consumption.In order to solve this problem,a data center efficient cooling and temperature control and humidity control system is proposed.The system has three operating modes: direct introduction of outdoor air,evaporative cooling,conventional air conditioning.According to the change of outdoor meteorological conditions,the air conditioning system can be converted between three modes,so as to achieve the purpose of energy conservation.DeST simulation software is used to study the palisade structure influence on data center air conditioning load.The results show that the load of the data center wad not affected by the heat transfer coefficient of the external wall during the summer,and with the decrease of the heat transfer coefficient of the external wall decreases,the load increases in the winter.In general,the choice of a larger heat transfer coefficient of the external wall is conducive to the outdoor delivery of more heat,which can reduce the data center air conditioning load.TRNSYS simulation software is used to study the operation mode and energy consumption of data center efficient air conditioning system.By analyzing the simulation results,obtains the annual operation plan of air conditioning system in four cities of Guiyang,Beijing,Harbin and Guangzhou.The TRNSYS simulation results also show that the data center efficient air conditioning system and air-cooled precision air-conditioning system compared to the annual operating energy consumption in Guiyang,Beijing,Harbin and Guangzhou,the energy-saving rate reaches 35.46%,49.90% 61.59%,19.96%;Compared with the annual energy consumption of chilled water room air conditioning system,the energy-saving rate is 29.90%,44.20%,57.03% and 10.86%.Through the calculation,the data center after the application of the efficiency air conditioning system in Guiyang,Beijing,Harbin and Guangzhou,the data center’s PUE value decreases to 1.52,1.47,1.33,1.75.