A coupled modeling framework for investigating flow maldistribution in cross-flow-corrugated plate heat exchangers  

作　　者：Haowen Li Xiaomei Guo Marat A.Belotserkovsky Aleksandr N.Grigorchik Vladimir A.Kukareko Zheng Bo 

机构地区：[1]School of Mechanical and Automotive Engineering,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,People’s Republic of China [2]Nanxun Innovation Institute,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,People’s Republic of China [3]Laboratory of Gas-Thermal Methods for Hardening Machine Parts,Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus,Minsk 220072,Belarus [4]Center for Structural Research and Tribo-Mechanical Testing of Materials and Engineering Products,Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus,Minsk 220072,Belarus [5]State Key Laboratory of Clean Energy Utilization,College of Energy Engineering,Zhejiang University,Hangzhou 310027,People’s Republic of China

出　　处：《International Journal of Fluid Engineering》2024年第3期86-97,共12页国际流体工程(英文)

基　　金：sponsored by the National Natural Science Foundation of China (Grant Nos. 52376037 and U22A20209);NSFC-BRFFR (Grant No. 52211530451);the Key Research and Development Program of Zhejiang Province (Grant Nos. 2022C01067 and 2022C03036);the Scientific Research Fund of Zhejiang Provincial Education Department (Grant No. Y202352498);BRFFR-NSFC (Grant No. T23KI-033)

摘　　要：Accurate prediction of the impact of flow maldistribution on the thermo-hydraulic behavior of plate heat exchangers is important for thermal design and optimization in a number of practical applications. In this paper, a coupled modeling framework, consisting of a heat transfer model and a hydraulic model, is proposed for quantitatively evaluating the impact of maldistribution on the thermo-hydraulic performance of a cross-flow-corrugated plate heat exchanger. The numerical results of the proposed approach are validated by comparison with experimental data. Using the coupled model, the flow distribution nonuniformity, heat exchanger effectiveness deteriorations, and pressure drop deviations are analyzed. Furthermore, the combined effects of side stream maldistribution are investigated for different inlet Reynolds numbers and inlet temperatures. The results demonstrate that when the inlet gas Reynolds number is in the range of 1100–2700, nonuniform distribution of the gas side will cause air maldistribution, and a 10%–30% effectiveness deterioration rate. It is found that air maldistribution will not result in gas maldistribution when the inlet air Reynolds number is in the range of 6000–18 000, but increasing air nonuniformity. Will lead to increasing deterioration in heat exchanger effectiveness. In the presence of air and gas flow maldistribution, the pressure drops on the gas and air sides increase by 5% and less than 12.4%, respectively. This work provides a computational framework for optimization of cross-flow-corrugated plate heat exchangers to achieve desired thermo-hydraulic performance.

关 键 词：MALDISTRIBUTION FLOW PLATE 

分 类 号：TQ051.5[化学工程]