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

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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An Experimental Study on the Heat Transfer Characteristics of High-Temperature Cylindrical Heat Pipes

고온 원관형 히트파이프의 열전달 특성에 관한 실험 연구

  • 박수용 (한국항공대학교 항공우주 및 기계공학부) ;
  • 부준홍 (한국항공대학교 항공우주 및 기계공학부)
  • Published : 2004.01.01
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Abstract

High-temperature cylindrical sodium/stainless-steel heat pipes were manufactured and tested for transient as well as steady states. Total length of the heat pipe was 1 m and the diameter was 25.4 mm. Screen meshes of 3 different sizes were used to estimate the effect of mesh size on the thermal performance of the heat pipe. The minimum thermal resistance achieved was as low as 0.02$^{\circ}C$/W for the maximum thormal load of 2 ㎾. The average heat transfer coefficient in the evaporator was about 2,000 ㎾/$m^2$K and those in the condenser region were up to 5 times higher.

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