International Journal of Air-Conditioning and Refrigeration

  • 제13권2호
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  • Pages.107-118
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  • 2005
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  • 2010-1325(pISSN)
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  • 2010-1333(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

Effects on Refrigerant Maldistribution on the Performance of Evaporator

  • Lee, Jin-Ho (School of Mechanical Engineering, Yonsei University) ;
  • Kim, Chang-Duk (Central Region Head Office, Korea Industrial Complex Corp.) ;
  • Byun, Ju-Suk (School of Mechanical Engineering, Yonsei University) ;
  • Jang, Tae-Sa (Department of Environmental Engineering, Gwangju University)
  • 발행 : 2005.06.01
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초록

An experimental investigation was made to study two-phase flow distribution in a T-type distributor of slit fin-and-tube heat exchanger using R-22. Experiments were carried out under the conditions of saturation temperature of $5^{\circ}C$ and mass flow rate varying from 0.6 to 1.2kg/min. The inlet air has dry bulb temperature of $27^{\circ}C$, relative humidity of 50% and air velocity varying from 0.63 to 1.71m/s. A comparison was made between the predictions from the previously proposed tube-by-tube method and the present experimental data for the heat transfer rate of evaporator. Results show that $82.5\%$ increase of air velocity is needed for T-type distributor with four outlet branches than that of two outlet branches under the superheat of $5^{\circ}C$, which resulted in increasing of air-side pressure drop of $130\%$ for the former as compared to the latter.

키워드

참고문헌

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