Multi-Objective Optimization of Asymmetric Plate Heat Exchanger with a Fish-Scale Corrugation Pattern
Year: 2026
Type: article
Abstract: Asymmetric structural design is an effective measure to meet the differentiated performance requirements of the flow channels on both sides of plate heat exchangers ( PHEs ). In this paper, a novel fish-scale corrugated asymmetric plate heat exchanger ( APHE ) was designed and multi-objective optimization was performed based on the objectives of minimizing the water side pressure drop, ΔP, and maximizing the heat transfer coefficient, K. Numerical simulations of the fish-scale corrugated APHE were conducted with the Box-Behnken Design ( BBD ) in the Response Surface Methodology ( RSM ). The corrugation angle, corrugation pitch, and protrusion ratio were selected as geometric variables. Through Analysis of Variance ( ANOVA ), significant regression models were established for the two competing performance indicators. Subsequently, Pareto optimal solutions were identified using the fast and elitist non-dominated sorting genetic algorithm ( NSGA-II ). A comparison of the performances reveals that the novel APHE reduces ΔP by 49.71% and increases K by 5.77% compared to the original chevron-type PHE. Further analysis of the simulation data reveals that the convective heat transfer coefficient on the refrigerant side is increased by 24.06%. These findings substantiate the benefits of the asymmetric feature of the fish-scale protrusion and offer a comprehensive and effective design strategy for APHEs.
Source: Energies
DOI: 10.3390/en19112663
Institution: Zhejiang University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,137
OpenAlex ID: W7163013429