Performance Analysis of a Coupled System based on Organic Rankine Cycle and Double Effect Absorption Refrigeration for Waste Heat Recovery in Data Center

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外文标题：Performance Analysis of a Coupled System based on Organic Rankine Cycle and Double Effect Absorption Refrigeration for Waste Heat Recovery in Data Center

外文摘要：During data center operation,it generates a significant volume of low-grade waste heat.To recover waste heat,a coupled system including solar collector,double effect absorption refrigeration and organic Rankine cycle is proposed.The system performance is analyzed in detail.For the organic Rankine cycle,five organic working fluids(R245fa,R245ca,R123,R11,and R113)are selected.R245fa,R113 and R245ca obtain the maximum net power output,thermal efficiency and exergy efficiency,respectively.In the double effect absorption refrigeration system,the evaporation temperature,condensation temperature,and generation pressure affect the COP and exergy efficiency.When the generator pressure is unchanged,the COP increases with increasing evaporation temperature and decreasing condensation temperature.When the COP reaches 1.3,the COP slightly decreases as the evaporation temperature or condensation temperature changes.Similarly,the exergy efficiency of refrigeration systems exhibits the same trend as the COP,and the exergy efficiency maximum value appears at approximately 0.32.Anew performance indicator,rPUE,was defined to evaluate the data center power utilization efficiency.The flow distribution ratio and heat source temperature were optimized with multi-objective optimization.When the mass flow distribution rate is 0.6 and the heat source temperature is 441.5 K,rPUE and the total unit production costs of the system obtain the optimal solution.

外文关键词：

data centersolar heat collectionorganic Rankine cycledouble effect absorption refrigerationwaste heat recovery

作者：

LI Peng、XU Jiaqi、WANG Binbin、LIU Jianyang、ZHAO Wensheng、HAN Zhonghe

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作者单位：

School of Energy Power and Mechanical Engineering,North China Electric Power University,Baoding 071003,China

Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology,North China Electric Power University,Baoding 071003,China

关键词：

data center solar heat collection organic Rankine cycle double effect absorption refrigeration waste heat recovery

出版年：

2025

DOI：

10.1007/s11630-024-2043-8

热科学学报(英文版)

中国科学院工程热物理研究所

热科学学报(英文版)

影响因子：0.233

ISSN：1003-2169

年,卷(期)：2025.34(1)