Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Heat Transfer Characteristics of Spray Cooling Up to Critical Heat Flux on Thermoexcel-E Enhanced Surface

Thermoexcel-E 촉진 표면에서 임계 열유속까지의 분무 냉각 열전달 특성

  • Lee, Yohan (L&E Research Center Energy solution laboratory, LG Electronics) ;
  • Hong, Gwang-Wook (Department of Mechanical Engineering, Inha University) ;
  • Lee, Jun-Soo (Department of Mechanical Engineering, Inha University) ;
  • Jung, Dongsoo (Department of Mechanical Engineering, Inha University)
  • 이요한 (LG전자 L&A연구센터 차세대공조연구소) ;
  • 홍광욱 (인하대학교 기계공학과) ;
  • 이준수 (인하대학교 기계공학과) ;
  • 정동수 (인하대학교 기계공학과)
  • Received : 2016.07.10
  • Accepted : 2016.08.24
  • Published : 2016.09.10
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Abstract

Spray cooling is a technology of increasing interest for electronic cooling and other high heat flux applications. In this study, heat transfer coefficients (HTCs) and critical heat fluxes (CHFs) are measured on a smooth square flat copper heater of $9.53{\times}9.53mm$ at $36^{\circ}C$ in a pool, a smooth flat surface and Thermoexcel-E surfaces are used to see the change in HTCs and CHFs according to the surface characteristics and FC-72 is used as the working fluid. FC-72 fluid has a significant influence on heat transfer characteristics of the spray over the cooling surface. HTCs are taken from $10kW/m^2$ to critical heat flux for all surfaces. Test results with Thermoexcel-E showed that CHFs of all enhanced surface is greatly improved. It can be said that surface form affects heat transfer coefficient and critical heat flux.

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References

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