A novel distributed solar refrigeration system based on evacuated U-tube solar collector and elastocaloric refrigerator  

作　　者：LI Hao ZHANG HouCheng 

机构地区：[1]College of New Energy,Ningbo University of Technology,Ningbo 315211,China

出　　处：《Science China(Technological Sciences)》2024年第9期2797-2810,共14页中国科学（技术科学英文版）

基　　金：supported by the Baima Lake Laboratory Joint Funds of the Zhejiang Natural Science Foundation of China(Grant No.LBMHY24E060010)。

摘　　要：Refrigeration challenges in regions with electricity shortages significantly decrease the quality of life for residents. In response to the prevalent refrigeration challenges in power-deficient areas, a novel distributed solar refrigeration system, comprising an evacuated U-tube solar collector and elastocaloric refrigerator, is theoretically introduced. Theoretical formulations for the energy efficiency and cooling power of the solar refrigeration system are presented to facilitate predictive assessments of the performance properties. Under typical conditions, the energy efficiency and cooling power of the solar refrigeration system are,respectively, 4.84% and 200.15 W. Subsequently, an extensive parameter study is conducted to comprehensively uncover key performance influencers and identify avenues for improvement. In addition, local sensitivity analyses identify that the length ratio is the top influential parameter, while the heat transfer fluid flow rate is the least sensitivity. A pragmatic case study,conducted with the weather data of Ningbo City, China, serves to empirically predict the performance of the hybrid system within the constraints of practical circumstances.

关 键 词：evacuated U-tube solar collector elastocaloric refrigerator solar refrigeration solar energy thermal utilization system integration 

分 类 号：TK519[动力工程及工程热物理—热能工程] TB65[一般工业技术—制冷工程]