THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

online first only

Condensate retention of water-ethanol mixture on horizontal enhanced condensing tubes

ABSTRACT
Condensate retention has been found an important parameter for heat transfer on horizontal enhanced condensing tubes. In this research, five pin-fin (varying in circumferential pin spacing) and three integral-fin horizontal tubes are investigated for condensate retentionangle (which is measured from the top of tooth to the fully flooded flank) using water-ethanol mixture. An attempt was made to find the optimum concentration of ethanol in water for maximum retention angle. Concentration of ethanol was varied in between 0.5 % to 1.5 % by weight. Data revealed the importance of integral-fin tube over pin-fin tube as significant increase in retention angle was observed for integral-fin tube ((having same longitudinal spacing, tooth thickness, tooth height, inner and outer diameter) while retention angle for pin-fin tubes remain unchanged. Optimum ethanol concentration was observed to be 0.75 %.
KEYWORDS
PAPER SUBMITTED: 2017-06-29
PAPER REVISED: 2017-11-03
PAPER ACCEPTED: 2017-11-05
PUBLISHED ONLINE: 2017-12-03
DOI REFERENCE: https://doi.org/10.2298/TSCI170629236A
REFERENCES
  1. H. M. Ali and M. Abubaker, "Effect of vapour velocity on condensate retention on horizontal pin-fin tubes," Energy Conversion and Management, vol. 86, pp. 1001-1009, 2014.
  2. H. M. Ali and A. Ali, "Measurements and semi-empirical correlation for condensate retention on horizontal integral-fin tubes: Effect of vapour velocity," Applied Thermal Engineering, vol. 71, pp. 24-33, 2014.
  3. C. L. Fitzgerald, A. Briggs, J. W. Rose, and H. S. Wang, "Effect of vapour velocity on condensate retention between fins during condensation on low-finned tubes," International Journal of Heat and Mass Transfer, vol. 55, pp. 1412-1418, 2012.
  4. H. Honda, S. Nozu, and K. Mitsumori, "Augmentation of condensation on horizontal finned tubes by attaching a porous drainage plate," in Proc. ASME-JSME Thermal Engineering Joint Conference, 1983, pp. 289-296.
  5. T. Rudy and R. Webb, "An analytical model to predict condensate retention on horizontal integral-fin tubes," Journal of heat transfer, vol. 107, pp. 361-368, 1985.
  6. A. Briggs and J. W. Rose, "Condensation on integral-fin tubes with special reference to effects of vapor velocity," Heat Transfer Research, vol. 40, 2009.
  7. J. Rose, "An approximate equation for the vapour-side heat-transfer coefficient for condensation on low-finned tubes," International journal of heat and mass transfer, vol. 37, pp. 865-875, 1994.
  8. A. Briggs and J. Rose, "Effect of fin efficiency on a model for condensation heat transfer on a horizontal, integral-fin tube," International journal of heat and mass transfer, vol. 37, pp. 457-463, 1994.
  9. K. Yau, J. Cooper, and J. Rose, "Horizontal plain and low-finned condenser tubes—Effect of fin spacing and drainage strips on heat transfer and condensate retention," Journal of heat transfer, vol. 108, pp. 946-950, 1986.
  10. H. M. Ali and A. Briggs, "An investigation of condensate retention on pin-fin tubes," Applied Thermal Engineering, vol. 63, pp. 503-510, 2014.
  11. H. M. Ali and M. Abubaker, "Effect of circumferential pin thickness on condensate retention as a function of vapor velocity on horizontal pin-fin tubes," Applied Thermal Engineering, vol. 91, pp. 245-251, 2015.
  12. H. M. Ali and A. Briggs, "Condensation of R-113 on pin-fin tubes: effect of circumferential pin thickness and spacing," Heat Transfer Engineering, vol. 33, pp. 205-212, 2012.
  13. H. M. Ali and A. Briggs, "Enhanced condensation of ethylene glycol on single pin-fin tubes: effect of pin geometry," Journal of heat transfer, vol. 134, p. 011503, 2012.
  14. H. M. Ali and A. Briggs, "Condensation heat transfer on pin-fin tubes: effect of thermal conductivity and pin height," Applied Thermal Engineering, vol. 60, pp. 465-471, 2013.
  15. P. Qin, Z. Zhang, T. Xu, X. Gao, and S. Wang, "Experimental investigation on condensation heat transfer of R134a on single horizontal copper and stainless steel three-dimensional finned tubes," in 7TH INTERNATIONAL SYMPOSIUM ON MULTIPHASE FLOW, HEAT MASS TRANSFER AND ENERGY CONVERSION, 2013, pp. 513-521.
  16. S. Sukhatme, B. Jagadish, and P. Prabhakaran, "Film condensation of R-11 vapor on single horizontal enhanced condenser tubes," Journal of heat transfer, vol. 112, pp. 229-234, 1990.
  17. R. Kumar, H. Varma, B. Mohanty, and K. Agrawal, "Augmentation of heat transfer during filmwise condensation of steam and R-134a over single horizontal finned tubes," International journal of heat and mass transfer, vol. 45, pp. 201-211, 2002.
  18. A. Briggs, "Enhanced condensation of R-113 and steam using three-dimensional pin-fin tubes," Experimental heat transfer, vol. 16, pp. 61-79, 2003.
  19. M. Baisar and A. Briggs, "Condensation of steam on pin-fin tubes: effect of circumferential pin thickness and spacing," Heat Transfer Engineering, vol. 30, pp. 1017-1023, 2009.
  20. A. Briggs, "Liquid retention on three-dimensional pin-fin tubes," in 2nd International Exergy, Energy and Environment Symposium, 2005, pp. 3-7.
  21. H. M. Ali, H. Ali, M. Ali, S. Imran, M. S. Kamran, and F. Farukh, "Effect of Condensate Flow Rate on Retention Angle on Horizontal Low-Finned Tubes," Thermal Science, dx.doi.org/10.2298/TSCI151128211A, 2016.
  22. H. M. Ali, "Condensation Heat Transfer on Geometrically Enhanced Horizontal Tube: A Review," in Heat Exchangers-Advanced Features and Applications, ed: InTech, 2017.
  23. J. Thomson, "XLII. On certain curious motions observable at the surfaces of wine and other alcoholic liquors," The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, vol. 10, pp. 330-333, 1855.
  24. C. Marangoni, "On the expansion of a drop of liquid floating on the surface of another liquid," Tipographia dei fratelli Fusi, Pavia, 1865.
  25. Y. Utaka and N. Terachi, "Measurement of condensation characteristic curves for binary mixture of steam and ethanol vapor," Heat Transfer-Japanese Research, vol. 24, pp. 57-67, 1995.
  26. Y. Utaka and N. Terachi, "Study on condensation heat transfer for steam-ethanol vapor mixture (relation between condensation characteristic curves and modes of condensate)," Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, vol. 61, pp. 3059-3065, 1995.
  27. V. Mirkovich and R. Missen, "Non‐filmwise condensation of binary vapors of miscible liquids," The Canadian Journal of Chemical Engineering, vol. 39, pp. 86-87, 1961.
  28. V. Mirkovich and R. Missen, "A study of the condensation of binary vapors of miscible liquids: Part 2: Heat transfer co‐efficients for filmwise and non‐filmwise condensation," The Canadian Journal of Chemical Engineering, vol. 41, pp. 73-78, 1963.
  29. T. Fujii, S. Koyama, Y. Shimizu, M. Watabe, and Y. Nakamura, "Gravity controlled condensation of an ethanol and water mixture on a horizontal tube," JSME, vol. 55, pp. 210-215, 1989.
  30. K. Hijikata, O. Nakabeppu, and Y. Fukasaku, "Condensation characteristics of a water-ethanol binary vapor mixture," in Proceedings of the 29th Japan Heat Transfer Symposium, 1992, pp. 742-743.
  31. C. Philpott and J. Deans, "The condensation of ammonia-water mixtures in a horizontal shell and tube condenser," Journal of heat transfer, vol. 126, pp. 527-534, 2004.
  32. Y. Utaka and S. Wang, "Effect of ethanol mass fraction on condensation heat transfer characteristics for water-ethanol binary vapor mixture," Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers, vol. 18, pp. 127-134, 2011.
  33. Y. Utaka and S. Wang, "Characteristic curves and the promotion effect of ethanol addition on steam condensation heat transfer," International Journal of Heat and Mass Transfer, vol. 47, pp. 4507-4516, 2004.
  34. Y. Utaka and H. Kobayashi, "Effect of velocity on condensation heat transfer for steam-ethanol binary vapor mixture," in Proceedings of 6th ASME-JSME thermal engineering joint conference, Paper No. TED-AJ03-604 (CD), 2003.
  35. Y. Yang, J. Yan, X. Wu, and S. Hu, "Effects of vapor pressure on Marangoni condensation of steam-ethanol mixtures," Journal of Thermophysics and Heat Transfer, vol. 22, pp. 247-253, 2008.
  36. Y. Li, J. Yan, L. Qiao, and S. Hu, "Experimental study on the condensation of ethanol-water mixtures on vertical tube," Heat and Mass Transfer, vol. 44, pp. 607-616, 2008.
  37. X. Ma, Z. Lan, W. Xu, M. Wang, and S. Wang, "Effect of surface free energy difference on steam-ethanol mixture condensation heat transfer," International Journal of Heat and Mass Transfer, vol. 55, pp. 531-537, 2012.
  38. J. Morrison and J. Deans, "Augmentation of steam condensation heat transfer by addition of ammonia," International journal of heat and mass transfer, vol. 40, pp. 765-772, 1997.
  39. K. J. Kim, A. M. Lefsaker, A. Razani, and A. Stone, "The effective use of heat transfer additives for steam condensation," Applied thermal engineering, vol. 21, pp. 1863-1874, 2001.
  40. C. Philpott and J. Deans, "The enhancement of steam condensation heat transfer in a horizontal shell and tube condenser by addition of ammonia," International journal of heat and mass transfer, vol. 47, pp. 3683-3693, 2004.
  41. S. Vemuri, K. J. Kim, and Y. T. Kang, "A study on effective use of heat transfer additives in the process of steam condensation," International journal of refrigeration, vol. 29, pp. 724-734, 2006.
  42. T. Murase, H. Wang, and J. Rose, "Marangoni condensation of steam-ethanol mixtures on a horizontal tube," International journal of heat and mass transfer, vol. 50, pp. 3774-3779, 2007.
  43. J. Wang, J. Yan, Y. Li, and S. Hu, "Experimental investigation of Marangoni condensation of ethanol-water mixture vapors on vertical tube," Heat and mass transfer, vol. 45, pp. 1533-1541, 2009.
  44. X. Chen, D. Chong, J. Wang, R. Huang, and J. Yan, "Experimental investigation on heat transfer of forced convection condensation of ethanol-water vapor mixtures on a vertical mini-tube," Heat and Mass Transfer, vol. 49, pp. 1231-1241, 2013.
  45. H. Ali, H. S. Wang, A. Briggs, and J. W. Rose, "Effects of Vapor Velocity and Pressure on Marangoni Condensation of Steam-Ethanol Mixtures on a Horizontal Tube," Journal of Heat Transfer, vol. 135, p. 031502, 2013.
  46. Y. Utaka and T. Nishikawa, "Measurement of condensate film thickness for solutal Marangoni condensation applying laser extinction method," Journal of Enhanced Heat Transfer, vol. 10, 2003.
  47. Y. Li, J. Yan, J. Wang, and G. Wang, "A Semi-Empirical Model for Condensation Heat Transfer Coefficient of Mixed Ethanol-Water Vapors," Journal of Heat Transfer, vol. 133, p. 061501, 2011.
  48. H. Ali, F. Noor, M. Kamran, A. Hussain, S. Imran, and F. Farukh, "condensation heat transfer enhancement using steam ethanol mixtures on a finned tube," Pakistan Journal of Science, vol. 67, 2015.