双冷水式机房空调自然冷却应用的节能分析
Energy saving analysis of natural cooling application in dual chilled water computer room air conditioners
摘要：
为了探索我国各地双冷水式机房空调自然冷却应用的节能潜力,给出了一种双冷水式机房空调自然冷却应用系统架构并分析了其运行模式。建立了双冷水式机房空调与冷水式机房空调的对比分析模型,利用当量压缩机耗电量对双冷水式机房空调的自然冷却应用进行了节能计算分析。结果表明:双冷水式机房空调直接利用冷却塔自然冷却的应用方式具有广泛的适用性;节能效果在可充分利用自然冷却地区越发突出,在不考虑水资源紧张的前提下节能率由高至低依次为西北、东北、华北、云贵高原、华东、川渝、华中及华南地区,其中西北地区绝大部分城市的节能率超过80%;通过采取节能优化措施可进一步提升双冷水式机房空调在水资源丰富、自然冷源相对贫乏的华南地区的节能效果,节能率提升值可达14.1%～20.5%。
Abstract：
In order to explore the energy saving potential of natural cooling application in dual chilled water computer room air conditioners in China,this paper presents an application system architecture of natural cooling of dual chilled water computer room air conditioners,and its operation modes are analysed.The comparative analysis model of dual chilled water computer room air conditioners and chilled water computer room air conditioners is established,and the energy saving calculation analysis of natural cooling application of the dual chilled water computer room air conditioners is carried out by using the equivalent compressor power consumption.The results show that the natural cooling application way of dual chilled water computer room air conditioners directly cooled by cooling towers has wide applicability.The energy saving effect is more prominent in regions where natural cooling can be fully utilized,and without considering the shortage of water resources,the energy saving ratio from high to low is in Northwest China,Northeast China,North China,the Yunnan-Guizhou Plateau,East China,Sichuan,Chongqing,Central China and South China regions.And the energy saving ratios of the vast majority cities in Northwest China region exceed 80%.By adopting energy saving optimization measures,the energy saving effect of dual chilled water computer room air conditioners in South China region,where water resources are abundant and natural cooling sources are relatively scarce,can be further improved,with energy saving ratio improvement values of 14.1% to 20.5%.
Keywords:data center; energy saving analysis; dual chilled water computer room air conditioner; natural cooling; energy saving ratio; equivalent compressor power consumption; equivalent compressor electrical power; South China region