摘要
设计了一种数据中心自然冷却用泵驱动回路热管换热机组,并介绍该机组的构成和工作原理,针对研制的样机搭建实验系统并较全面地进行实验研究。结果表明:当室内外温差为10℃时,机组能效比COP为5.88;当室内外温差为18℃时,机组COP可达10.41;当系统质量流量在一定范围变化时,即工质气化率在2%～50%范围内,机组换热量没有显著变化,且换热量与室内外温差近似呈线性关系;同时系统阻力越大,蒸发器进出口温差越大,显热换热量所占比例也越大。
A free cooling unit with a pump-driven loop heat pipe was designed for internet data center（IDC）,and its components and working processes were described.The experiment system for the developed prototype was built and the comprehensive studies were conducted.The experimental results demonstrate that the coefficient of performance（COP） of the unit can reach to 5.88 when the temperature difference between IDC indoor and outdoor is 10℃,and it will be 10.41 when the temperature difference is 18℃.When mass flow rate of the working fluid in the unit changes within a certain range,namely the gasification rate of the fluid being between 2% and 50%,there is no significant changes for the heat transfer capacity.And there is an approximately linear relationship between the capacity and the temperature difference.Meanwhile,with the increase of the system resistance,both temperature difference of the fluid between inlet and outlet of the evaporator and the proportion of the sensible heat to the capacity also increase.
出处
《土木建筑与环境工程》
CSCD
北大核心
2013年第4期145-150,共6页
Journal of Civil,Architectural & Environment Engineering
基金
国家自然科学基金(51076003)
关键词
数据中心节能
回路热管
自然冷却
energy efficiency for internet data center
loop heat pipe
free cooling
