中小型数据中心冷却系统末端气流组织问题分析和优化

Problem Analysis and Optimization of Airflow Field at Cooling System Terminal in Small and Medium-sized Data Centers

本文针对中小型数据中心冷却系统末端气流组织形式问题、机房渗透风问题和末端空调设定问题提出优化建议。末端气流组织问题分析了不同的气流组织形式,如弥漫式送风形式、间接蒸发冷侧送风形式、列间空调送风形式、背板空调送风形式、顶置空调送风形式和地板下送风形式的通用问题及解决方法。机房渗透风问题,主要表现为IT机房或空调机房通过门窗、电缆井、新风机与外部联通后导致的气流冷热掺混;末端空调参数设定问题,表现为空调参数设定不合理引起的空调控制问题,从而导致空调不能正确地送出IT设备所需要的冷量和风量等问题。分析结果展现本文提出的分析和优化建议可以应用到实际数据中心改造实施中,可以有效改善机房的热点和能效问题。

The analysis methods and optimization suggestions for small and medium-sized data center cooling system end airflow organization problems,machine room infiltration air problems and end air conditioning setting problems are proposed in this paper.The general problems and solutions of different airflow organization forms are analyzed based on the end airflow organization problem,such as diffuse air supply form,indirect evaporative cooling side air supply form,in-row air conditioning air supply,backboard air conditioning air supply,overhead air supply,and underfloor air supply.The problem of air infiltration in computer rooms mainly manifests as the mixing of cold and hot airflow caused by the connection of IT or air conditioning rooms to the outside through the windows and doors,cable wells,new air conditioners and external links.The problem of setting parameters for terminal air conditioning is manifested as air conditioning control issues caused by unreasonable air conditioning parameter settings,resulting in air conditioning not being able to correctly deliver the required cooling and air volume for IT equipment.The analysis results show that the analysis methods and optimization suggestions proposed in this paper can be applied in the implementation of the actual data center transformation,which can effectively improve the hot spots and energy efficiency problems in the server room.