摘要
随着能源问题的日益突出,亟需研制高效能源设备,微通道换热器以其优良的性能在热管理系统中备受关注。针对微通道换热器流动与传热特性理论计算提出了一个计算模型,基于文献建立实验数据库,分别对比分析了10种和6种传热与流动计算关联式,并针对一种换热器结构进行了数值仿真与模型求解。研究得出:采用Stephan等、Sarmiento等提出关联式所得关于传热特性的经验解与实验解的吻合度较好;采用Kim等、Muzychka等提出的关联式所得关于流动特性的经验解与实验解的吻合度较好;对换热单元进行数值仿真和模型计算,数值解与经验解中绝大多数点的误差在10%以内,验证了本文提出计算模型在理论求解中的准确性与可信度。
As the energy problem becomes more and more prominent,it is urgent to develop high-efficient energy equipment.Microchannel heat exchanger has attracted much attention in thermal management system due to its excellent performance.In this paper,a calculation model is proposed for the theoretical calculation of flow and heat transfer characteristics of microchannel heat exchanger.Based on the establishment of experimental database of literature,10 and 6 kinds of heat transfer and flow calculation correlation formulas are compared and analyzed respectively.And numerical simulation and model solving research are carried out for a heat exchanger structure.The empirical solution of heat transfer characteristics obtained by using the correlation formula proposed by Stephan et al.and Sarmiento et al.is in good agreement with experimental solutions.The empirical solution of flow characteristics obtained by using the correlation formula,which are proposed by Kim et al.,Muzychka et al.,is in good agreement with the experimental solution.The numerical simulation and model calculation of the heat exchange unit are carried out,and the error of most points in the numerical solution and the empirical solution is within 10%,which verifies the accuracy and reliability of the calculation model proposed in this paper in the theoretical solution.
作者
余智强
吴建泽
任亚涛
何明键
于喜奎
齐宏
YU Zhiqiang;WU Jianze;REN Yatao;HE Mingjian;YU Xikui;QI Hong(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China;Key Laboratory of Aerospace Thermal Physics,Ministry of Industry and Information Technology,Harbin 150001,Heilongjiang,China;Shenyang Aircraft Design&Research Institute,AVIC,Shenyang 110035,Liaoning,China)
出处
《化工学报》
EI
CSCD
北大核心
2022年第12期5324-5342,F0002,共20页
CIESC Journal
基金
中国广核集团-哈尔滨工业大学先进核能与新能源研究院项目(CGN-HIT202213)。
关键词
微通道换热器
流动与传热特性
计算模型
数值仿真
数值解
实验解
经验解
microchannel heat exchanger
flow and heat transfer characteristics
calculation model
numerical simulation
numerical solution
experimental solution
empirical solution
