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The effect of flat heater inclination on the heat transfer coefficient in gas-fluidized beds

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Identyfikatory
Warianty tytułu
Konferencja
8 Zjazd Termodynamiki/sympozjum (XVIII ; 02-06.09.2002 ; Warszawa, Polska)
Języki publikacji
PL
Abstrakty
EN
In this paper the effect of the orientation a flat heater on the heat transfer coefficient in a gas- solid fluidized bed is experimentally investigated. The effect of the rectangular heater and the gas flow was examined by changing the angle from 0° to 180°, connection with the effect of the hydrodynamic parameters. The experimental results were conducted at ambient temperatures in a Plexiglas Coleman of 142mm I.D. and the heater used is made copper and electrically heated by a constant power of 6w. The heater position was at constant height in the column but its radial position was changed. Oil shale particles of different size were used as the solid phase in the fluidized bed. The velocity of air was changed in the range from 0.035 m/s to 1.8 m/s. the results obtained were discussed and compared with other previous studies.
Słowa kluczowe
Rocznik
Strony
9--16
Opis fizyczny
Bibliogr. 11 poz., rys.
Twórcy
autor
  • Al-Balga Applied University, Faculty of Engineering Technology, Ammam, Jordan, Marka P.O. Box 15008
Bibliografia
  • 1. Vreedenberg. H.A.: heat transfer between fluidized bed and vertically inserted tubes, J. Appl. Client, 2 supplementary issue no. 1, (1952).
  • 2. Al- Busoul. M.: local heat transfer coefficients around a horizontal heated tube immersed in a gas fluidized bed (accepted for publication) in heat and mass transfer (2002).
  • 3. Yasuo Kurosaki, Hiroshi Ishiguro and Kiyoshi Takahasi: fluidization and heat transfer characteristics a round a horizontal heated circular cylinder immersed in gas fluidized bed. Int. j. heat mass transfer, Vol. 31, No. 2, pp. 349-358 (1988).
  • 4. Chandran, J.C. Chen and F.W. Staub: local heat transfer coefficient around horizontal tubes in fluidized bed. Trans. Am Soc. Mech. Engrs. Series C. heat transfer 102, 152-157 (1980).
  • 5. Saxena, S.C., N.S. Grewal. J.D. Gabor S. S. Zabrodsky and D. M. Galershtein: heat transfer between a gas fluidized bed and immersed tubes, in advances in heat transfer (edited by T.F. Irvine, JR. and J.P. Hartentt) vol. 14, p. 149-247, Academic press, New York (1979).
  • 6. Genetti, R.A., W.E. Schmall and E. S Grimmett, the effect of tubes in a fluidized bed, A.I.Ch.E. SYMP. SER 67(116), 90-96 (1971).
  • 7. Cretu, J. Yang L. and S.C. Saxene. hat transfer to a single smooth vertical tube immersed in air fluidized bed, Letters in heat mass transfer 8, 465-474 (1981).
  • 8. Filippovskii P.F. and Baskakov A.P.: investigation of the temperature field in a fluidized bed close to a heated plate and of heat transfer between them, Int. Chem Eng. 13, 5-9 (1973).
  • 9. K.K. Keliogy, B. Rebinsky and R. Greif: the effect of orientation on the heat transfer from a flat surface in an air fluidized bed. Ind. J. Heat Mass Transfer, 26 no 1, p. 151-153 (1983).
  • 10. M. Al- Busoul and M. Abu-Zaid: prediction of heat transfer coefficient between immersed surfaces and fluidized beds. Int. comm. Heat mass transfer, vol. 27, No 4, 549-558 (2000).
  • 11. D.J. Gunn and N. Hilod, heat transfer from vertical inserts in gas fluidized beds, Int. J. Heat mass transfer, Vol. 39, No. 16, p. 3357-3365 (1996).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-PWA5-0003-0002
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