适用于空调温区斯特林热机的回热器设计与分析  

Design and analysis of new type regenerator for Stirling engine

作　　者：张天乐 张君安[1] 王亚娟 刘波[1] Zhang Tianle;Zhang Junan;Wang Yajuan;Liu Bo(School of Mechanical and Electronic Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学机电工程学院,西安710021

出　　处：《低温工程》2021年第2期18-24,64,共8页Cryogenics

基　　金：陕西省创新能力支撑计划项目(2020KJXX-016);陕西省教育厅科研计划项目(20 JC015);陕西省自然科学基础研究计划一般项目(面上)(2020 JM-720);陕西省教育厅科研计划项目(20 JC016);咸阳市重点研发计划(2019k02-07)。

摘　　要：为了提高斯特林热机用于室温空调方面的性能,设计了一种通道规整的栅格式回热器,采用CFD仿真的方法分别对回热器简化后的多孔介质模型进行计算,分析在单向流与振荡流条件下的回热器内部温度分布与压力分布,对比了不同长径比的回热器性能,结果表明:回热器能够实现回热与换热,不同长径比下的回热器具有不同的换热性能。回热器在振荡条件下能够达到稳定运行。在单向流实验中,实验结果与仿真结果基本一致,验证了仿真结果的正确性。In order to improve the performance of Stirling engine used in room temperature air conditioning,a grid type regenerator with regular channels was designed.CFD simulation method was used to calculate the simplified porous media model of the regenerator,the temperature and pressure distribution in the regenerator under the conditions of one-way flow and oscillating flow are analyzed,and a comparison between the regenerators unders different aspect ratios has been made.The results show that the regenerator can realize heat return and heat transfer,and the regenerator has different heat transfer performance under different length-diameter ratios.The regenerator can operate stably under oscillating conditions.In the one-way flow experiment,the experimental results are basically consistent with the simulation results,which verifies the correctness of the simulation results in this paper.

关 键 词：斯特林热机 栅格式回热器 CFD 仿真 试验研究 

分 类 号：TB657.5[一般工业技术—制冷工程]