化工学报2025，Vol.76Issue(z1)：326-335,10.DOI:10.11949/0438-1157.20241378
液冷数据中心余热驱动的压缩-吸收式制冷系统特性研究
Research on characteristics of compression-absorption refrigeration system driven by waste heat in liquid-cooled data center
摘要
Abstract
Waste heat recovery is an essential solution to optimize the energy consumption structure of data center as well as save energy and reduce carbon emissions.This paper constructed a model of compression-absorption refrigeration system driven by waste heat in liquid-cooled data center,and investigated the influence of supply-side heat source temperatures,cooling water temperature and other parameters on the refrigeration performance.The coordination method of compression ratio and cooling water temperature was researched to compensate for system performance under variable cooling conditions.Combined with the year-round climate analysis in Beijing,the analysis of the refrigeration characteristics driven by waste heat source of a typical server with different heat dissipation powers was carried out,and it was concluded the performance was improved by the increasing temperature of the supply-side heat sources.The operating range of cooling water temperature was widened by 6.5℃to 8.7℃as the compression ratio increased from 1.2 to 1.8.In transition seasons and winter,plentiful natural cooling sources can maintain the operation of single-effect absorption refrigeration system with considerable performance,and provide effective natural cooling for servers.During the period of the environmental temperature on average,only a handful of compression power was spent in achieving efficient refrigeration.When operating in the extremely hot climate,the compression power equivalent to 15%to 20%of the waste heat was consumed to maintain efficient refrigeration.The system achieves waste heat recovery with high efficiency in most of the time of the year from the theoretical analysis.In future research,the development of new types of working pairs,the optimization of energy consumption under extreme climatic conditions,and the design and maintenance of system devices are technical difficulties that need to be broken through.关键词
数据中心/液冷系统/余热回收/吸收式制冷/性能补偿Key words
data center/liquid-cooled system/waste heat recovery/absorption refrigeration/performance compensation分类
能源与动力引用本文复制引用
黄琮琪,邵双全..液冷数据中心余热驱动的压缩-吸收式制冷系统特性研究[J].化工学报,2025,76(z1):326-335,10.基金项目
国家自然科学基金项目(52076085) （52076085）
华中科技大学学术前沿青年团队项目(2019QYTD10) （2019QYTD10）
