间接蒸发冷却数据中心余热利用技术应用分析
Application research on waste heat utilization technology in data centers using indirect evaporative cooling technology
摘要：
针对现有采用间接蒸发冷却的数据中心辅助区和支持区冬季供暖存在的不节能、运行成本高、无法回收机房余热等问题，提出了3种不同的余热利用方案，分别为间接蒸发冷却空调机组回风段设置换热单元回收机房余热、利用空气循环处理机组（AHU）回收机房余热、利用间接蒸发冷却空调机组辅助压缩机直接供热；并介绍了3种方案的余热回收系统设计、控制逻辑、适用场景及优缺点。以某数据中心为例，从设备选型、初投资、运行耗电量、运行成本几方面进行了方案分析，为该类数据中心的余热回收系统设计提供了参考和解决方案。
Abstract：
Based on the problems such as no energy saving, high operating cost and no recovery of waste heat in winter heating of auxiliary and support areas in data centers using indirect evaporative cooling air conditioning units, three different waste heat utilization schemes are put forward. The three schemes are to set the heat exchange units to recover the waste heat in the return air sections of the indirect evaporative cooling air conditioning units, recycle the waste heat with the air handling units, and direct heating by auxiliary compressor of the indirect evaporative cooling air conditioning units. The design, control logic, application scenarios, advantages and disadvantages of each waste heat utilization scheme are introduced. A data center is taken as an example, and the equipment selection, initial investment, operating power consumption, operating cost and so on are analysed. This paper provides a reference and solution for the design of waste heat utilization system in this kind of data centers.
Keywords:datacenter;coolingsystem;indirectevaporativecoolingairconditioningunit;wasteheatutilization;energysavingandcarbonreduction