以火用损失指数分析评价数据机房热环境
Data center thermal environment analysis and evaluation using exergy loss index
摘要：
回顾了数据机房常用的热环境评价指标，定义了损失指数，从考察损失的角度分析了机房内的传热和流动过程。以典型机房模型为例，通过数值模拟将常用的机房热环境评价指标与损失指数进行了对比分析，验证了该指数的可行性。损失指数不仅能反映数据机房的热环境，还能分析由冷热气流掺混等导致机房冷却效率低下的因素。提出了相应的改进措施，对提高数据机房的能量利用有参考意义。
Abstract：
Reviews the common evaluating indexes for data center thermal environment, and proposes exergy loss index(ELI) method to describe the air flow and heat transfer process in data center. Taking a typical data center model as an example, testifies the feasibility of this method by comparing with current common evaluating methods.ELI method can not only describe data center thermal environment, but also analyse various factors which decrease the cooling efficiency. Puts forward the improvement suggestions, which provids the reference for improving the energy use of data centers.
Keywords:data center,exergy loss index,thermal environment,energy use,supply heat index,return heat index,return temperature index