数据中心水冷冷冻水系统能效分析

Energy Efficiency of Water-Cooled Chilled Water Systemin Data Center

针对当前数据中心常用的水冷冷水机组+热交换器+冷却塔的冷冻水系统及自然冷却方案(冬季采用冷却塔供冷),通过简易分析办法,模拟计算出一些典型城市的数据中心制冷系统全年能效,能效分析数据以制冷系统能效比和制冷系统PUE因数来体现。通过模拟计算说明了制冷系统各主要设备能耗比例、不同工况下的能效差别,以及不同城市由于自然冷源利用时间不同引起的能效差别。

In view of the commonly water cooling system(water-cooled chiller+heat exchanger+cooling tower)and free cooling scheme(tower cooling in winter)in data center,the annual energy efficiency of refrigeration system of data center in some typical cities is simulated by a simple analysis method.Energy efficiency analysis data are represented by the energy efficiency ratio and the PUE factor.Through the simulation calculation,the energy consumption ratio of the main equipment in the refrigeration system and the energy efficiency difference under different operating mode and the energy efficiency difference caused by different free cooling time in different cities are explained.