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

  • 제16권12호
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  • Pages.1167-1174
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  • 2004
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

다분지 응축기의 냉매유량 분배에 미치는 중력의 영향을 고려한 해석방법

Analysis of the Gravity Effect on the Distribution of Refrigerant Flow in a Multi-circuit Condenser

  • 이장호 (포항공과대학교 기계공학과) ;
  • 김무환 (포항공과대학교 기계공학과)
  • 발행 : 2004.12.01
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초록

The method to consider gravity effect on the performance of a condenser is developed, and a simple condenser having 'nU' type two circuits is analyzed. Each circuit has the same length and inlet air-side operational conditions. The only difference between two circuits is the direction of refrigerant flow, which is exactly opposite each other between the upper 'n' type circuit and the lower 'U' type circuit. It is shown that the gravity makes the distribution of refrigerant flow uneven in the two circuits at lower refrigerant flow rates; heat transfer rate also becomes uneven. Moreover, much of the refrigerant exists as liquid state in the circuit having low refrigerant flow rate, which will make the cycle balance unstable in the refrigeration cycle system like a heat pump.

키워드

참고문헌

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