Drag Reduction and Mechanical Degradation of Poly(ethylene oxide) in Seawater

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Wongi Chun¹  Chul Am Kim³  Myung S. Jhon⁴  Jun Hee Sung³  Chong Bo Kim²  Hyoung J. Choi³ 

[1] Department of Nuclear and Energy Engineering, Cheju National University;Department of Mechanical Engineering, Inha University;Department of Polymer Science and Engineering, Inha University;Department of Chemical Engineering, Carnegie Mellon University

关键词: Drag Reduction;    Poly(ethylene oxide);    Linear Correlation;    Mechanical Degradation;   

DOI  :  10.1252/jcej.32.803

来源: Maruzen Company Ltd

【 摘 要 】

References(37)Cited-By(7)Polymer induced turbulent drag reduction in a rotating disk apparatus was investigated using four different molecular weights of nonionic poly(ethylene oxide) (PEO) in synthetic seawater for potential application to cold water piping in the Ocean Thermal Energy Conversion (OTEC) system. The linear correlation between polymer concentration (C) and C/DR for different molecular weights of PEO and a universal correlation are obtained. In addition, to measuring the drag reduction efficiency change during the operation period, the drag reduction behavior is measured as a function of time, and the results obtained from this experiment are then correlated with Brostow’s equation for polymer degradation. From this study, the drag reduction effect induced by polymer additives is found to be applicable to the OTEC plant to reduce the pumping energy cost.

【 授权许可】

Unknown