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Study on the material properties and heating efficiency according to the internal surface coating of the brazed plate heat exchanger (BPHE)

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2020, 30(6), pp.237-243
  • DOI : 10.6111/JKCGCT.2020.30.6.237
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : October 27, 2020
  • Accepted : November 16, 2020
  • Published : December 31, 2020

Hang-Chul Jung 1 Hyunseok Yang 2 Hyunjong Kim 1 Jong-Po Park 2

1고등기술연구원연구조합
2고등기술연구원

Accredited

ABSTRACT

In this study, a silane-based coating was applied to improve corrosion resistance and thermal efficiency performanceof a brazed plate heat exchanger (BPHE) composed of stainless plate and copper (Cu) brazing. Although the selected coatingmaterial was applied to the BPHE by evaluating the corrosion and contact angle according to the coating material, theresult of the heat transfer performance evaluation showed that the thermal efficiency was lower than that of the uncoatedBPHE. It was analyzed that the adhesion of the coating agent to the flow path inside the BPHE and the residual coatingagent on the surface acted as heat resistance, preventing heat transfer. This is due to the structural characteristics of theBPHE in which a fine flow path exists inside, and it is believed that manufacturing after coating the surface of the flowpath in advance in the manufacturing process of the BPHE can improve heat transfer performance.

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