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 the U-shape Heat Pipe using Working Fluid of PFC

PFC 작동유체 사용 U형 히트파이프의 열전달특성 연구

  • 이기우 (한국에너지기술연구원 페열이용연구센터) ;
  • 박기호 (한국에너지기술연구원 페열이용연구센터) ;
  • 전원표 (한국에너지기술연구원 페열이용연구센터)
  • Published : 2001.08.01
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Abstract

The purpose of the present study is to examine the heat transfer characteristics of the U-shape heat pipe for the cooling of semiconductor in subway train. Perflouro-carbon(PFC) was used as working fluid. Temperature distribution on the surface and heat transfer coefficients were investigated according to the working fluid volume percent and heating rate. The results were as follows; Optimum volumetric percent of working fluid was from 80% to 90%, and hat transfer coefficients of evaporation and condensation were as follows, respectively. $\hbar_ie=0.37\times(\frac{P_i}{P_O})$l_c}^0.3$,$\hbar_ic-4.2(\frac{\kappa_l^3p_l^2gh_fg}{\mu_lq_c_l_c}^\frac{1}{3}

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References

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