Shape optimization of welded plate heat exchangers based on grey correlation theory. (August 2017)

• Record Type: Journal Article
• Authors: Zhicheng, Yuan; Lijun, Wu; Zhaokuo, Yuan; Haowen, Li
• Is Part Of: Applied thermal engineering. Volume 123(2017)
• Page Start: 761
• Page End: 769
• Publication Date: 2017-08
• Subjects: Welded plate heat exchanger -- Grey correlation theory -- Computational fluid dynamics; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2017.05.005
• Languages: English
• ISSNs: 1359-4311

Abstract

Highlights: Grey correlation theory and CFD are applied to optimize the shape of WPHE. The impact of the three factors on WPHE's performance is analyzed. The relation between the three factors and heat transfer coefficient is reported. The relation between the three factors and pressure drop is proposed. Abstract: This paper focuses on shape optimization and heat transfer analysis of a Welded Plate Heat Exchanger (WPHE) with straight gas channels and corrugated water channels. Three influential factors (long axis, short axis and plate spacing) were selected as the initial variables to carry out CFD (Computational Fluid Dynamics) simulation. The influences of various factors on heat transfer characteristics were analyzed using the grey correlation theory, then the optimal parameters of WPHE were discovered by increasing the data density for further study. To verify the correctness of the results, a test platform was built based on the optimal parameters. The error of the two study methods was less than 10%, compared with the CFD simulation results.