摘要
针对目前数据中心用板翅式间接蒸发冷却器的不同布水方式存在布水不均的问题,利用搭建的板翅式间接蒸发冷却器试验台,主要对上布水和下布水、间歇性和连续性等不同布水方式的换热性能进行了对比试验,分析了喷淋水压、顺逆流喷淋、间歇性和连续性对均匀布水的影响因素。结果表明,淋水密度随着喷淋水压力的增大而增大,但增长幅度下降,且趋于平缓;当连续性与间歇性布水的湿球效率仅相差0.4%时,连续性布水的淋水密度却是间歇性布水的50倍;上部移动式间歇性布水相比于下部间歇性喷淋布水的湿球效率提高5.5%左右,逆流喷淋布水的效果优于顺流喷淋;上部移动式间歇性+下部间歇性喷淋布水相比于上部移动式间歇性布水的湿球效率提高1%~3%;相比于下部间歇性/连续性喷淋布水提高4%~9%。综上,建议板翅式间接蒸发冷却器采用上部+下部间歇性喷淋布水的结合方式。
For the problem of uneven water distribution in different water distribution methods of plate-fin indirect evaporative coolers currently used in data centers,the built plate-fin indirect evaporative cooler test bench was mainly used for upper and lower water distribution,intermittent water distribution.The heat transfer performance of different water distribution methods such as intermittent and continuous water distribution methods were compared,and the influencing factors of spray water pressure,forward and reverse flow spray,intermittent and continuous water distribution on even water distribution were analyzed.The results show that the spray density increases with the increase of spray water pressure,but the growth rate decreases and tends to be gentle;when the wet bulb efficiency of continuous and intermittent water distribution is only 0.4%different,the spray density of water for continuous distribution is 50 times that of intermittent water distribution;the wet bulb efficiency of the upper mobile intermittent water distribution is about 5.5%higher than that of the lower intermittent spray water distribution,and the effect of countercurrent spray water distribution is better than downstream spray;the wet bulb efficiency of upper mobile intermittent water distribution+lower intermittent water distribution is increased by 1%to 3%compared to the upper mobile intermittent water distribution;compared with the lower intermittent/continuous spray,the water distribution is increased by 4%to 9%.In summary,it is recommended that a combination of upper and lower intermittent spray water distribution should be adopted for the plate-fin indirect evaporative cooler.
作者
金洋帆
黄翔
屈名勋
王颖
陈梦
JIN Yangfan;HUANG Xiang;QU Mingxun;WANG Ying;CHEN Meng(Xi'an Polytechnic University,Xi'an 710048,China)
出处
《流体机械》
CSCD
北大核心
2022年第2期13-19,共7页
Fluid Machinery
基金
“十三五”国家重点研发计划项目(2016YFC0700404)
西安工程大学研究生创新基金资助项目(chx2020040)。
关键词
板翅式间接蒸发冷却器
布水方式
间歇性布水
淋水密度
plate-fin indirect evaporative cooler
water distribution method
intermittent water distribution
water spray density
