THERMAL AND HYDRAULIC PERFORMANCE ANALYSIS OF OFFSET STRIP FIN HEAT EXCHANGER FOR EV APPLICATION

Junhyuk Kim, Jinwoo Oh, Hoseong Lee

Research output: Contribution to journalConference articlepeer-review

Abstract

As internal combustion engine vehicles evolve into electric vehicles, thermal management systems become more complex and increasingly important. In this study, the thermal and hydraulic performance of the offset strip fin heat exchanger (OSFHX) is experimentally investigated to confirm its feasibility as an EV heat pump outdoor unit. The OSFHX is a heat exchanger that can be used in secondary loops, and the overall structure can be more compact than conventional radiators. This can help improve heat pump performance by reducing the length of the loop and reducing the amount of refrigerant charge. When the OSFHX is used as a condenser, the performance under cooling conditions of electric vehicles was analyzed. As a result of the condensation performance experiment of OSFHX, it was found that power electronics (PE) occupies an average of 66.1% of the total heat transfer rate. Offset strip fins are also applied with perpendicular flow to improve heat transfer performance. The effect of this offset strip fin was confirmed through a comparative experiment. With this experiment, heat exchanger with offset strip fins showed a 28.7~81.3% increase in heat transfer rate per area compared to the plate heat exchanger.

Original languageEnglish
Pages (from-to)1481-1484
Number of pages4
JournalProceedings of the Thermal and Fluids Engineering Summer Conference
Volume2023-March
Publication statusPublished - 2023
Event8th Thermal and Fluids Engineering Conference, TFEC 2023 - Hybrid, College Park, United States
Duration: 2023 Mar 262023 Mar 29

Bibliographical note

Funding Information:
This work was supported by the Korea Evaluation Institute of Industrial Technology [grant number No. 20018568]

Publisher Copyright:
© 2023 Begell House Inc.. All rights reserved.

Keywords

  • Heat transfer coefficient
  • Offset strip fin
  • Perpendicular flow
  • Plate-fin Heat exchanger

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes
  • Electrical and Electronic Engineering

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