数据中心用立管式间接蒸发冷却器的实验研究

Experimental Study on Vertical Tube Indirect Evaporative Cooler for Data Center

为了降低数据中心能耗提高换热效率,提出一种立管式间接蒸发冷却空调,并进行了两组测试,分析了相同一次风量和淋水量条件下不同二次一次风量比下的蒸发效率,以及在不同地区(也即不同的二次进风干球温度和湿球温度)的冷量和蒸发效率。得出结论如下:在一次风量为8800 m^(3)/h,淋水量为1.2 m^(3)/h条件下,随着二次一次风量比的增大,蒸发效率先增大后减小,二次一次风量比在0.73时蒸发效率最大,达到了79.30%;一次风量为8800 m^(3)/h,二次一次风量比为0.79,淋水量为1.2 m^(3)/h条件下,高温高湿地区的蒸发效率较高但冷量较低。

In order to reduce the energy consumption of data center and improve the heat exchange efficiency,a vertical tube indirect evaporative cooling air conditioner is proposed in this paper,two groups of tests were carried out,the evaporation efficiency under the same primary air volume and shower volume and different secondary air volume ratio,as well as the cooling capacity and evaporation efficiency in different areas(i.e.different dry bulb temperature and wet bulb temperature of secondary air inlet)were analyzed.The conclusions are as follows:under the condition of 8800 m^(3)/h primary air volume and 1.2 m^(3)/h drenching water volume,the evaporation efficiency first increases and then decreases with the increase of the secondary primary air volume ratio.When the secondary primary air volume ratio is 0.73,the evaporation efficiency is the highest,reaching 79.30%;when the primary air volume is 8800 m^(3)/h,the ratio of secondary air volume to primary air volume is 0.79,and the drenching water volume is 1.2 m^(3)/h,the evaporation efficiency is higher but the cooling capacity is lower in the high temperature and high humidity area.