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

  • 제19권12호
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  • Pages.850-856
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  • 2007
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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

정지상태 수용액에서 가압과 냉각속도가 과냉각해소에 미치는 영향

Effect of Pressurization and Cooling Rate on Dissolution of a Stationary Supercooled Aqueous Solution

  • 김병선 (전북대학교 대학원 기계공학과) ;
  • 백종현 (한국생산기술연구원) ;
  • 홍희기 (경희대학교 기계산업시스템공학부) ;
  • 강채동 (전북대학교 기계공학과, 전북대학교 공업기술연구센터)
  • Kim, Byung-Seon (Graduate school of Mechanical Engineering, Chonbuk National University) ;
  • Peck, Jong-Hyun (Korea Institute of Industrial Technology) ;
  • Hong, Hi-Ki (School of Mechanical and Industrial System Engineering, KyungHee University) ;
  • Kang, Chae-Dong (Department of Mechanical Engineering, Chonbuk National University, The Research Institute of Industrial Technology, Chonbuk National University)
  • 발행 : 2007.12.10
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초록

In a supercooled or capsule type ice storage system, aqueous solution (or water) may have trouble with non-uniform dissolution though the system contributes to the simplicity of system and ecological improvement. The non-uniform dissolution increases the instability of the system because it may cause an ice blockage in pipe or cooling part. In order to observe the supercooled state, a cooling experiment was performed with pressurization to an ethylene glycol(EG) 3 mass% solution in stationary state. Also, the effect of the pressurization from 101 to 505 kPa to the dissolution of supercooled aqueous solution was measured with the dissolution time of the supercooled aqueous solution at a fixed cooling rate of brine. At results, the dissolution of supercooled point decreased as the pressure of the aqueous solution in the vessel increased. Moreover, the dissolution point increased as the heat flux for cooling increased.

키워드

참고문헌

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