Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7054474 | International Journal of Heat and Mass Transfer | 2018 | 13 Pages |
Abstract
The Printed Circuit Heat Exchanger (PCHE) has attracted a lot of attentions recently due to its high efficiency and compactness, and the airfoil fin has excellent thermal-hydraulic performance compared with the zigzag channel in PCHE. Two novel fins were proposed in this study based on the configuration of NACA 0020 airfoil fin, in order to further improve the performance of airfoil fin PCHE. The thermal-hydraulic performance and the enhancement mechanism of the fins were numerically investigated using supercritical CO2 as the working fluid. The results showed that one of the novel fins has better comprehensive performance and less entransy dissipation than the NACA 0020 airfoil fin used in PCHE, since the j factor of this novel fin is 2.97-6.15% larger, and the pressure drop is 0-4.07% less than the NACA 0020 airfoil fin under the selected conditions. And the staggered arrangement and the proper shape of fins could reduce the effect of boundary layer and improve the thermal-hydraulic performance effectively. In addition, the enhancement mechanism of the novel fin PCHE could be explained with field synergy principle very well.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Xinying Cui, Jiangfeng Guo, Xiulan Huai, Keyong Cheng, Haiyang Zhang, Mengru Xiang,