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

  • 제29권7호
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  • Pages.385-389
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  • 2017
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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)
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액 수위와 유량이 세장비가 큰 냉동용 수직 리시버의 과냉에 미치는 영향

Effect of Liquid Level and Mass Flow Rate on Subcooling of Vertical Refrigeration Receiver Having a Large Aspect Ratio

  • Kim, Nae-Hyun (Department of Mechanical System Engineering, Incheon National University)
  • 투고 : 2017.01.08
  • 심사 : 2017.03.16
  • 발행 : 2017.07.10
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초록

Generally, refrigerant temperature out of the receiver is assumed to be saturated. This may be true for horizontal or vertical receivers having small aspect ratio. However, this assumption needs verification for vertical receiver having large aspect ratio. No study has reported information on this issue. The objective of this study was to determine the effect of liquid level and mass flow rate on liquid subcooling of a long vertical receiver using R-410A. During the test, inlet subcooling was maintained at $5^{\circ}C$ while saturation temperature was maintained at $10^{\circ}C$. Results showed that subcooling was maintained for the long vertical receiver. Subcooling preservation ratio (ratio of exit to inlet subcooling) was increased as mass flow rate or liquid level was increased. As a whole, 50 to 70% subcooling preservation was possible for the present receiver. Further investigations are needed to enhance information on this issue using receivers having different aspect ratios.

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참고문헌

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