Solar Energy (태양에너지)

The Korean Solar Energy Society (한국태양에너지학회)
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Application of Polymer Induced Drag Reduction to OTEC System

고분자로 인한 마찰저항 감소의 OTEC시스템 응용

  • Kim, C.A. (Dept. of Polymer Science & Engineering, Inha University) ;
  • Sung, J.H. (Dept. of Polymer Science & Engineering, Inha University) ;
  • Choi, H.J. (Dept. of Polymer Science & Engineering, Inha University) ;
  • Chun, W. (Dept. of Nuclear and Energy Engineering, Cheju National University) ;
  • Kim, S. (Dept. of Nuclear and Energy Engineering, Cheju National University) ;
  • Kim, C.B. (Dept. of Mechanical Engineering, In-ha University) ;
  • Kim, H.T. (Dept. of Energy, Ajou University)
  • 김철암 (인하대학교 고분자공학과) ;
  • 성준희 (인하대학교 고분자공학과) ;
  • 최형진 (인하대학교 고분자공학과) ;
  • 천원기 (제주대학교 에너지공학과) ;
  • 김신 (제주대학교 에너지공학과) ;
  • 김종보 (인하대학교 기계공학과) ;
  • 김형택 (아주대학교 에너지학과)
  • Published : 1998.12.30
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Abstract

Polymer induced turbulent drag reduction in a rotating disk apparatus was investigated using four different molecular weights of poly(ethylene oxide)(PEO) in a synthetic seawater solution for the purpose of potential application to the cold water piping in the Ocean Thermal Energy Conversion(OTEC) system. To apply drag reduction to the OTEC we measured the temperature dependence on the drag reduction efficiency. From this study, it was found that the drag reduction efficiency increases with the temperature and the concentration. To measure the drag reduction efficiency during the operation period, the drag reduction behavior was detected as a function of time and the results obtained from the experiment was compared to the Brostow's model equation.

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