错流微通道低温交叉换热等体积补偿机理研究  

Research on equal-volume compensation mechanism of cryogenic heat transfer in cross-flow micro-channel

作　　者：张周卫 盛日昕 张超[2] 汪雅红 Zhang Zhouwei;Sheng Rixin;Zhang Chao;Wang Yahong(Research Institute of LNG cryogenic equipment and Automation,Lanzhou Jiaotong University,Lanzhou 730070,China;School of Environment and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学LNG低温装备及自动化研究所,兰州730070 [2]兰州交通大学环境与市政工程学院,兰州730070

出　　处：《低温工程》2023年第2期8-17,69,共11页Cryogenics

基　　金：国家自然科学基金项目(51666008);甘肃省重点人才项目(26600101);甘肃省高等学校产业支撑项目(2020C-22)。

摘　　要：建立了错流微通道低温交叉换热系统物理模型、不同尺度错流微通道单元数学模型及传热单元数值模型。针对不同错流微通道模型,提出了等体积补偿理论计算模型及计算方法,并进行了单元模型传热数值模拟研究。构建了不同尺度及形状错流微通道实验模型并对单元理论模型及数值模型进行了实验验证。研究表明:等体积补偿法可用于解决复杂错流微通道换热器换热面的工程计算难题,为不同尺度不同结构的微通道错流交叉换热设计提供理论依据及工程设计计算方法。The systematic physical model,the unit mathematical models and the unit numerical models of the cross-flow microchannel with different scales were established for cryogenic crossing heat transfer.The equal-volume compensation theoretical calculation models and calculation methods were proposed for different cross-flow microchannel models,and the heat transfer numerical simulations of the unit models were carried out.The experimental models of the cross-flow microchannel with different scales and shapes were constructed,and the unit theoretical model and numerical model were experimentally verified.The research shows that the equal-volume compensation method can be used to solve the engineering calculation problems of the complex cross-flow microchannel heat exchanger,and provide theoretical basis and engineering design calculation methods for the cross-flow heat transfer design of microchannel with different scales and structures.

关 键 词：错流微通道换热器 低温交叉换热机理 等体积补偿法 

分 类 号：TB611[一般工业技术—制冷工程]