THERMAL SCIENCE

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Mustafa Özdemir

,

Ufuk Durmaz

AN APPROACH TO OBTAIN THE HEAT TRANSFER COEFFICIENT OF AQUEOUS SUCROSE SOLUTIONS IN AGITATED BOILING VESSELS

ABSTRACT
In this study, the heat transfer mechanism under agitated pool boiling was examined experimentally. Aqueous sugar solutions were used in a centrically agitated vessel. The effects of the gap which is between the impeller edge and the flat bottom of the agitated vessel, the rotational impeller speed and impeller size were studied on the boiling heat transfer coefficient. A new Nusselt function depending on the Peclet number was suggested for the heat transfer mechanism.
KEYWORDS
heat transfer; agitated vessels, pool boiling, forced convection, aqueous sugar solutions
PAPER SUBMITTED: 2013-01-11
PAPER REVISED: 2013-09-29
PAPER ACCEPTED: 2013-11-04
PUBLISHED ONLINE: 2013-11-16
DOI REFERENCE: https://doi.org/10.2298/TSCI130111143O
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2015, VOLUME 19, ISSUE Issue 3, PAGES [1025 - 1036]
REFERENCES
  1. Holven, A.L., Sucrose solutions: influence of pressure on boiling point elevation, Ind Eng Chem, 28 (1936), pp. 452-455
  2. Peres, A.M., Macedo, E.A., A modified UNIFAC model for the calculation of thermodynamic properties of aqueous and non-aqueous solutions containing sugar, Fluid Phase Equilib, (1997), pp. 139-474
  3. Adamiak, R., Karcz, J., Effects of type and number of impellers and liquid viscosity on the power characteristics of mechanically agitated gas-liquid systems, Chemical Papers, 61 (2007), 1, pp. 16-23, DOI: 10.2478/s11696-0006-0089-6
  4. Cudak, M., Karcz, J., Distribution of local heat transfer coefficient values in the wall region of an agitated vessel, Chemical Papers, 62 (2008), 1, pp. 92-99, DOI: 10.2478/s11696-007-0084-6
  5. Triveni, B., Vishwanadham, B., Venkateshwar, S., Studies on heat transfer to Newtonian and non-Newtonian fluids in agitated vessel, Heat Mass Transfer, 44, (2008), pp. 1281-1288, DOI: 10.1007/s00231-007-0364-2
  6. Peixoto, S.M.C., Nunhez, J.R., Improving internal flow of coiled stirred tanks, Proceedings, Second International Conference on CFD in the Minerals and Process Industries, Csiro, Melbourne, Australia, 1999, pp. 363-368
  7. Lakghomi, B., Kolahchian, E., Jalali, A., Ferhadi, F., Coil and Jacket's effects on internal flow behavior and heat transfer in stirred tanks, World Academy of Science, Engineering and Technology, 24, (2006), pp. 147-151
  8. Kawase,Y., Hoshino, M., Takahashi, T., Non Newtonian laminar boundary layer heat transfer in stirred tanks, Heat and Mass Transfer, 38, (2002), pp. 679-686, DOI: 10.1007/s002310100257
  9. Adib, T.A., Heyd, B., Vasseur, J., Experimental results and modeling of boiling heat transfer coefficients in falling film evaporator usable for evaporator design, Chemical Engineering and Processing, 48, (2009), pp. 961-968, DOI: 10.1016/j.cep.2009.01.004
  10. Gabsi, K., Trigui, M., Helal, A.N., Barrington, S., Taherian, A.R., CFD modeling to predict diffused date syrup yield and quality from sugar production process, Journal of Food Engineering, 118, (2013), pp. 205-212, DOI: 10.1016/j.jfoodeng.2013.04.011
  11. Rohsenow, W.M., A method of correlating heat transfer data for surface boiling of liquids, Trans ASME, 74 (1952), pp. 969-976
  12. Nukiyama, S., The maximum and minimum values of heat Q transmitted from metal to boiling water under atmosferic pressure, J Jpn Soc Mech Eng, 37 (1934), pp. 367-374
  13. Ozdemir, M., Pehlivan, H., Prediction of the boiling temprerature and heat flux in sugar-water solutions under pool boiling conditions, Heat Mass Transfer, 44 (2008), pp. 827-833, DOI: 10.1007/s00231-007-0310-3
  14. Hahne, E., Barthau, G., Heat trasfer and nucleation in pool boiling, Int. J. of Ther. Sci., 45 (2006), pp. 209-216
  15. Kotthoff, S., Gorenflo, D., Danger, E., Luke, A., Heat transfer and bubble formation in pool boiling: Effect of basic surface modifications for heat trasfer enhancement, Int. J. of Ther. Sci., 45 (2006), pp. 217-236
  16. Jeschar, R., Alt, R., Specht, E., Grundlagen der Warmeübertragung, Viola-Jeschar-Verlag Goslar, Germany, 1990
  17. www.wissenschaft-technik-ethik.de/wasser_eigenschaften.html#kap05
  18. Lipinski, G.W.V.R., Handbuch SüBungsmittel
  19. Kline, S.J., McClintock, F.A., Describing Uncertainties in Single Sample Experiments, Mech. Eng., 3, (1953), pp. 3
  20. Holman, J.P., Experimental methods for engineers, McGraw-Hill, Singapore, 1989
  21. www.sugartech.com
  22. Çengel, Y.A., Thermodynamics An Engineering Approach, McGraw-Hill, New York, 1998
  23. Kakaç, S., Örneklerle ısı transferi(Heat Transfer with applications), Güven Inc., İzmir, Turkey, 1972
  24. Incropera, F.P., Dewitt, D.P., Fundamentals of Heat and Mass Transfer, John Wiley and Sons Inc., New York, 1996
  25. Çengel, Y.A., Heat and Mass Transfer A Practical Approach, McGraw-Hill, New York, 2006
  26. Çengel, Y.A., Cimbala, J.M., Fluid Mechanics:Fundamentals and Applications, McGraw-Hill, New York, 2006
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An approach to obtain the heat transfer coefficient of aqueous sucrose solutions in agitated boiling vessels

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence