General Prediction on the Thermal Stress Distribution in Airfoil-Finned Microchannel Pche Based on Orthogonal Experimental Design

• DOI: 10.2139/ssrn.5087254
• Publication Date: 2025-01-08T13:42:46Z
• Authors: Qiu Zhu; Qingfeng Jiang; Xiao Song; Chongyao Pan; Jiayang Gu; Jiayou Wang
• Keywords: Microchannel; Fin

The natural gas (NG) liquefaction process utilizing the airfoil-finned microchannel printed circuit heat exchanger (PCHE) undergoes substantial internal structural changes due to extreme conditions of high pressure and large temperature differentials. induce both compressive thermal stresses within PCHE, which will compromise inherent stability transfer core. Moreover, distinctive streamlined structure fin arrangement render conventional stress analysis methods inadequate. In this paper, numerical simulation is utilized analyze distribution PCHE based on orthogonal experimental design methodology. influences plate-fin parameters finned flow channel stresses, total are evaluated. Furthermore, supplementary loading introduced examine influence channel. Finally, a calibration correlation equation for formulated from data. disparity between calculated value obtained proposed simulated represents maximum positive deviation 13.6% minimum negative -11.4%. research provides valuable data technical insights that can inform intensity in PCHE.