可再生能源2025，Vol.43Issue(3)：324-332,9.
内置间断扭曲肋的三套管相变蓄热器的充热性能研究
Thermal performance analysis of triplex tube regenerative heat exchanger accumulator with built-in interrupted twisted fins
摘要
Abstract
For the accumulator filled with phase change material thermal conductivity is low,heat storage time is long and other shortcomings,this paper establishes the concentric triplex tube regenerative heat exchanger built-in intermittent twisted fin model,the use of Fluent software for the melting process of the internal phase change material for the three-dimensional unsteady numerical simulation of the structure of the structure of the different twisted fin number and the degree of twisted degree,analyze the phase change material liquid phase rate,the average temperature,the amount of heat storage and the average heat storage rate rule of law with time.Simulation re-sults show that in this paper,compared with the triplex tube regenerative heat exchanger within the research parameters,with the in-crease of the degree of twist,the complete melting time is gradually shortened,when the twist rate is 2.5,the complete melting time can be reduced by up to 33.1%,with the increase in the number of twisted fins can also shorten the complete melting time,when the number of twisted fins is 4 complete melting time can be reduced by a maximum of 25.6%.The inclusion of intermittent twisted fin sig-nificantly shortens the complete melting time of the phase change material and enhances the heat storage capacity,which helps to im-prove the comprehensive heat storage performance of the triplex tube regenerative heat exchanger.关键词
相变储热/三套管式相变蓄热器/熔化/扭曲肋/数值模拟Key words
phase-change heat storage/triplex tube regenerative heat exchanger/melting/twisted fins/numerical simulation分类
能源与动力引用本文复制引用
谢尚奎,林志敏,侯博,王良璧..内置间断扭曲肋的三套管相变蓄热器的充热性能研究[J].可再生能源,2025,43(3):324-332,9.基金项目
甘肃省高等学校产业支撑计划项目(2023CYZC-37). （2023CYZC-37）
