不同长径比填充床蓄冷器储释冷特性研究  

STUDY ON COLD STORAGE CHARACTERISTICS OF PACKED BED REGENERATOR WITH DIFFERENT ASPECT RATIO

作　　者：孙潇 罗志斌 蔡春荣 朱光涛 裴爱国 Sun Xiao;Luo Zhibin;Cai Chunrong;Zhu Guangtao;Pei Aiguo(China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,China;Department of Electrical Engineering,Tsinghua University,Beijing 100084,China;China Energy Engineering Co.,Ltd.,Beijing 100022,China)

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广州510663 [2]清华大学电机工程与应用电子技术系,北京100084 [3]中国能源建设股份有限公司,北京100022

出　　处：《太阳能学报》2024年第10期745-751,共7页Acta Energiae Solaris Sinica

基　　金：中国能建广东院科技项目(EV10071W);中国能源建设股份有限公司重大科技项目(CEEC2021-KJZX-06)。

摘　　要：在相同操作条件下模拟分析16组具有相同总体积、不同长径比的蓄冷器(组),比较准稳态的储冷量、释冷量、储释冷效率。结果表明:经过20次储释冷循环后达到准稳态。单体蓄冷器长径比从0.6增加到3时,储冷量/释冷量逐渐增加,但储释冷效率逐渐降低。并联数量从1增加到6时,蓄冷器组的储冷量、释冷量、储释冷效率均呈下降趋势。设计蓄冷器几何结构时,建议采用长径比为2的单体形式或串联形式。若必须并联,应尽量减小并联数量。16 sets of regenerators with the same total volume and different aspect ratio are studied under the same operating conditions.The quasi-steady state cold charge capacity,cold discharge capacity and charge-discharge efficiency are compared.The results show that the performance of the regenerator reaches a quasi-steady state after 20 cycles.When the aspect ratio of the single regenerator increases from 0.6 to 3,the cold charging/cold discharging capacity gradually increases,but the charge-discharge efficiency gradually decreases.When the parallel number of the regenerator increases from 1 to 6,the cold charge,cold discharge and cooling efficiency of the regenerator group all decrease.When designing the geometric structure of the regenerator,it is recommended to consider the single form or series form with an aspect ratio of 2.If a parallel connection is unavoidable,the number of parallel connections should be reduced as much as possible.

关 键 词：传热 数值模拟 填充床 蓄冷 长径比 

分 类 号：TK02[动力工程及工程热物理]