태양에너지 (Solar Energy)

한국태양에너지학회 (The Korean Solar Energy Society)
권호 표지

스파이럴형 냉동코일을 사용한 유하액막식 빙축열조에서 열전달현상에 관한 실험적연구

The Experimental Study of Ice Thermal Storage for Falling Film Type - Sprint Coil Type -

  • Lee, C.M. (Dept. of Mechanical Eng., Yuhan College) ;
  • Kim, D.H. (Dept. of Mechanical Eng., Yuhan College) ;
  • Cho, N.C. (Dept. of Mechanical Eng., Ansan Technical College) ;
  • Kim, I.G. (Graduate School, Inha University) ;
  • Park, S.R. (Graduate School, Inha University) ;
  • Choi, K.K. (Dept. of Mechanical Eng., Inchon University) ;
  • Yim, C.S. (Dept. of Mechanical Eng., Inha University)
  • 발행 : 1999.06.30
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초록

The heat transfer characteristics of ice storage system of falling film type using sprial coil is investigated. The experimental facilities consisted of a water tank, spiral coils located above the tank, an upper water distributor, and a circulating water pump. Water is distributed uniformally over the spiral coils and it forms falling thin films. In the process of freezing, ice is formed on outside of the spiral coils through recirculation of tank water. In the process of melting, ice is melted with return water from the heat load, while the water is chilled again and drops into the tank. The results of falling film type of ice thermal storage system are as follows. The highly efficient shower flowrates for icing is near $3{\ell}/min$. Icing rates on spiral coils is rosed while brine flowrates is increased. Lower brine temperature is not only increased freezing rates but. also become higher total icing weight and overall heat transfer coefficient. Smaller shower flowrates is obtained lower water temperature on outlet for a long time. The amounts of quantity can be detected more accurately by measuring storage tank weight.

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