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

  • 제18권12호
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  • Pages.1025-1032
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  • 2006
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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

계면활성제에 의한 난류 관내 유동의 마찰감소 현상

Drag Reduction Phenomena of Surfactant Turbulent Pipe Flows

  • 발행 : 2006.12.10
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초록

This is to characterize the fluid mechanics of surfactant water solutions, which exhibit drag reduction in the turbulent flow as compared to pure water. The emphasis is placed on those fluid characteristic aspects of drag reducing solutions which are relevant for application in closed circulation loops for the purpose of pumping power savings, like hydronic cooling and heating systems in buildings. The experiments are carried out with the solutions of the surfactant Beraid DR-IW 616 in concentration of $100{\sim}3,000ppm$. The following key parameters are focused in this study: surfactant concentration, solution temperature and pipe diameter.

키워드

참고문헌

  1. Matthys E. F., 1991, Heat transfer, drag reduction, and fluid characterization for turbulent flow of polymer solutions; Recent results and research needs, Journal of NonNewtonian Fluid Mechanics, Vol. 38, pp.313-342 https://doi.org/10.1016/0377-0257(91)83010-2
  2. Steiff, A., Althaus, W., Weber, M. and Weinspach, P., 1989, Application of drag-reducing additives in district heating systems, Drag Reduction in Fluid Flow, Ellis Horwood, Chichester, pp, 247-254
  3. Rho, T. H., Park, J. S., Kim, C. Y., Yoon, H. K and Suh, H. S., 1996, Degradation of polyacrylamde in dilute solution, Polymer Degradation and Stability, Vol. 51, pp.287-293 https://doi.org/10.1016/0141-3910(95)00182-4
  4. Gasljevic, K and Matthys, E. F., 1993a, On saving pumping power in hydronic thermal distribution systems through the use of dragreducing additives, Energy and Buildings, Vol. 20, pp. 45-56 https://doi.org/10.1016/0378-7788(93)90037-U
  5. Gaslievic, K, 1995, Experimental investigation of drag reduction by surfactant solutions and of its implementation in hydronic systems, PhD. thesis of University of California, Santa Barbara
  6. Zakin,J. L., Bin, L. and Bewerslorff, H. W., 1994, Surfactant drag reduction, Rev. Chern. Eng., Vol. 14, pp.255-325
  7. Kim, C. Y., Park, S. R., Yoon, H. K and Haw, J. R., 2004, Abrupt reduction in drag redu-cing ability of cationic surfactant solution, Chemical Engineering of Japan, Vol. 37, No. 11, pp. 1326-1336 https://doi.org/10.1252/jcej.37.1326
  8. Kays, W. M., 1960, Convective Heat and Mass Transfer, Mcgraw-Hill Book, Co
  9. McAdams, W. H., 1954, Heat Transmission, Mcgraw-Hill Book, Co:
  10. Virk, P. S., 1975, Drag reduction fundamentals, AIChE, Vol. 21, No.4, pp.625-656 https://doi.org/10.1002/aic.690210402
  11. Gasljevic, K., Nan, X. and Matthys, E. F., 1993, Effect of drag-reducing surfactant additives on heat exchangers, Development in Non-Newtonian Flows, ASME, AMD-Vol. 175, pp. 101-108