Experimental study on the heat and mass transfer characteristics of a counter-flow wet cooling tower with foam ceramic packing
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An experimental investigation of coinstantaneous heat and mass transfer phenomena between water and air in a counter flow wet cooling tower filled with a new type packing named “FCP-08” is presented in this paper. The packing consisted of foamed ceramic corrugated board with sine waves and surface retention groove is 1.0 m high and have a cross sectional test area of 0.68×0.68 m2. The present investigation is focused mainly on the effect of the water/air mass flow ratio on the heat and mass transfer characteristics of the cooling tower, for different inlet water temperatures. The results show that the cooling water range R and the cooling tower efficiency e decrease with the increase of water/air mass flow ratio L/G. Meanwhile, the cooling characteristic coefficient KαV/L slightly decreases with the increase of water/air mass flow ratio and the value is obviously higher than that of other packing investigated before. The expression of cooling characteristic coefficient related to water/air mass flow ratio and inlet water temperature is obtained by linear fitting. The comparison between the obtained results and those found in the literature for other types of packing indicates that cooling performance of the tower with foam ceramic packing is better.
Key wordscooling tower heat and mass transfer characteristics foam ceramic packing water/air mass flow ratio cooling performance
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- 2.W.M. Simpson and T.K. Sherwood, Performance of small mechanical draft cooling towers, Amer. Soc. Refrigerating Engineers, 1946, Vol. 52, P. 535–543.Google Scholar
- 3.J.E. Braun, Methodologies for the design and control of central cooling plants, PhD thesis, Mechanical engineering, University of Wisconsin-Madison, Madison, 1988.Google Scholar
- 13.K. Seongyup and M.A. Deshusses, Determination of mass transfer coefficients for packing materials used in biofilters and biotrickling filters for air pollution control. P. 2. Development of mass transfer coefficients correlations, Chemical Engng Sci., 2008, Vol. 63, P. 856–861.CrossRefGoogle Scholar
- 14.Uncertainty of measurement. P. 3. Guide to the expression of uncertainty in measurement. 1995. ISO/IEC Guide 98-3, GUM.Google Scholar
- 15.J. Lichtenstein, Performance and selection of mechanical draft cooling towers, ASME Transfer, 1943, Vol. 65, P. 779–787.Google Scholar
- 16.V.F. Merkel, Verdunstungskühlung, Zeitschrift des Vereines Deutscher Ingenieure (VDI), 1925, Vol. 70, P. 123–128.Google Scholar
- 17.L.D. Berman, Evaporative Cooling of Circulating Water,: Gosenergoizdat, Moscow, 1965.Google Scholar
- 18.R.H. Perry, D.W. Green, and J.O. Maloney, Perry’s Chemical Engineers’ Handbook, 7th ed., McGraw-Hill, N.Y. etc., 1997.Google Scholar
- 19.Armfield Ltd., BASIC water cooling tower: engineering teaching and research equipment (instruction manual), 1993.Google Scholar
- 21.N.W. Kelly and L.K. Swenson, Comparative performance of cooling tower packing arrangements, Chemical Engineering Progress, 1986, Vol. 52, P. 263–268.Google Scholar
- 22.R.G. Barile, J.L. Dengler, and T.A. Hertwig, Performance and design of a turbulent bed cooling tower, AIChE Symposium Series, 1974, Vol. 70, No. 138, P. 154–162.Google Scholar