数据机房风冷式冷水机组系统改造

System transformation of air-cooled chiller on data room

针对数据机房单独使用风冷式冷水机组容易产生热岛效应,影响数据中心的安全稳定运行问题,提出在风冷式冷凝器后直接串联水冷式冷凝器的方法。利用软件EVAP-COND和Coolselector2设置一套数值计算方法进行计算,结果表明,系统改造后,在工作环境温度为45℃时串联系统的高压值为1.95MPa,随着工作环境温度的升高,高压值增大,在工作环境温度达到65℃时,串联系统的高压值为2.38MPa,均低于2.60 MPa的高压报警值,有效地避免机房主机在高温环境下因高压报警而停机的现象。

The air-cooled chiller is easy to produce heat island effect,which affects safe and stable operation of the data center.The water-cooled condenser is connected after the air-cooled condenser in this system.A set of numerical calculation method is established using EVAP-COND and Coolselector2 software,the result shows that when the system is transformed,high pressure of the series system is 1.95 MPa at the work temperature of 45℃.The high pressure increases with the increase of the work temperature.The high pressure of the series system is 2.38 MPa at the work temperature of 65℃,all below the high pressure alarm value(2.60 MPa),which is effective to avoid the system being shut down due to reaching the high pressure alarm value in high temperature environment.