靳如意,黄翔,王颖,代聪
JIN Ruyi,HUANG Xiang,WANG Ying,DAI Cong

• 1:西安工程大学

摘要(Abstract)：

为了研究喷淋水量和二次风量对板翅式间接蒸发冷却器换热性能的影响，搭建了数据中心用蒸发冷却焓差试验平台，在乌鲁木齐、西安、福州3种典型城市工况下对高分子板翅式间接蒸发冷却器的换热性能进行对比试验。结果表明：换热效率随淋水密度的增大呈先升高、后降低的趋势，3种工况下，机组的最佳淋水密度分别为25.28,16.85,14.04 kg/（m·h），此时的最佳换热效率分别为65%,59%,54.3%；在最佳淋水工况下，随着二/一次风量比的逐渐增大，乌鲁木齐工况的热交换效率和进出风温降始终呈上升趋势，西安、福州工况分别在风量比1.2,1.1后逐渐下降；3种工况下的最佳风量比分别为1.7,1.2,1.1，间接蒸发冷却效率分别可达65.1%,59%,55.2%；乌鲁木齐工况的最佳淋水密度和最佳二/一次风量比均高于西安、福州工况，蒸发冷却技术在干燥地区更能发挥优势。
In order to study the influence of spray water volume and secondary air volume on the heat transfer performance of plate-fin indirect evaporative cooler,an experimental platform for evaporative cooling enthalpy difference for data center was built,and the heat transfer performance of polymer plate-fin indirect evaporative cooler was compared under three typical urban working conditions in Urumqi,Xi'an and Fuzhou. The results show that the heat transfer efficiency increases first and then decreases with the increase of water spray density. Under the three working conditions,the optimal water spray density of the unit is 25.28,16.85 and 14.04 kg/（m·h） respectively.At this time,the optimal heat transfer efficiency is 65%,59% and 54.3%respectively;Under the optimal water spraying condition,with the gradual increase of the secondary/primary air volume ratio,the heat exchange efficiency and the temperature drop of inlet and outlet air under Urumqi condition always tends to rise,while under Xi'an and Fuzhou conditions,the air volume ratio is 1.2 and 1.1,respectively,and then gradually decreases;The optimal air volume ratio under three working conditions is 1.7,1.2 and 1.1 respectively,and the indirect evaporative cooling efficiency can reach 65.1%,59% and 55.2%;The optimal sprinkling density and the optimal ratio of secondary/primary air flow under Urumqi working conditions are higher than those under Xi'an and Fuzhou working conditions,and evaporative cooling technology can play a more dominant role in dry areas.

关键词(KeyWords)： 数据中心;板翅式间接蒸发冷却器;淋水密度;二/一次风量比;间接蒸发冷却效率
data center;plate-fin indirect evaporative cooler;sprinkling density;secondary/primary air volume ratio;indirect evaporative cooling efficiency

Abstract:

Keywords:

基金项目(Foundation): 深圳市科技研发基金资助可持续发展专项项目（KCXFZ20201221173409026）

作者(Author): 靳如意,黄翔,王颖,代聪
JIN Ruyi,HUANG Xiang,WANG Ying,DAI Cong

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