房间风墙空调在高功率密度风冷服务器机柜中的应用研究
Research on application of room air-wall air conditioning to high-power density air-cooled server cabinets
摘要：
以某项目为例分析了房间风墙空调送风形式下高功率密度机房的气流组织,通过6Sigma Room仿真软件建立了房间风墙空调送风形式的机房模型,验证了房间风墙空调应用于高功率密度机房的可行性,分析了送风距离与房间风墙空调的风阀配置形式对气流组织的影响。结果表明:采用房间风墙空调送风的供冷方式可以满足20 kW/机柜等高功率密度机房的散热需求;送风距离较小时(0.8、1.2 m),靠近风墙的首排机柜处会出现局部负压的现象,当送风距离为0.8 m时,最低负压约为-17.70 Pa,送风距离为1.2 m时,最低负压约为-4.18 Pa;送风距离达到1.2 m以上时,机柜出风温度和进风量基本保持不变;风阀配置形式对机柜出风温度和进风量影响较小,关闭底部风阀会使机房整体静压降低。
Abstract：
Taking a certain project as an example, this paper analyses the air distribution in a high-power density computer room under the air supply mode of room air-wall air conditioning. A computer room model with the air supply mode of room air-wall air conditioning is established using the 6Sigma Room simulation software to verify the feasibility of applying room air-wall air conditioning to high-power density computer rooms, and the impacts of the air supply distance and the air valve configuration of room air-wall air conditioning on air distribution are analysed. The results indicate that the cooling method of air supply via room air-wall air conditioning can meet the heat dissipation requirements of high-power density computer rooms, such as those with a power density of 20 kW per cabinet. When the air supply distance is relatively short (0.8 m and 1.2 m), a local negative pressure phenomenon occurs at the first row of cabinets near the air wall. When the air supply distance is 0.8 m, the lowest negative pressure is approximately -17.70 Pa, and when it is 1.2 m, the lowest negative pressure is about -4.18 Pa. When the air supply distance exceeds 1.2 m, the outlet air temperature and air intake volume of the cabinets remain largely unchanged. The air valve configuration has a relatively minor impact on the outlet air temperature and air intake volume of the cabinets, and closing the bottom air valves can reduce the overall static pressure in the computer room.
Keywords:data center; room air-wall air conditioning; high-power density cabinet; air distribution; air supply distance; air valve configuration