Heat transfer fluidized beds

Tamarin, A. I., Zabrodsky, S. S., and Yepanov, G., Heat Transfer Between a Horizontal Staggered Tube Bundle and a Fluidized Bed, Heat Transfer-Soviet Research, 8(5) 51—55 (1976)... 

The relation between the transfer coefficient and thermal fluctuations in fluidized-bed heat transfer. 

J.R. Grace, Fluidized bed heat transfer, in Handbook of Multiphase Systems (Hetsroni, Ed.), Hemisphere, New York, 1982. 

In a well-fluidized gas-solid system, the bulk of the bed can be approximated to be isothermal and hence to have negligible thermal resistance. This approximation indicates that the thermal resistance limiting the rate of heat transfer between the bed and the heating surface lies within a narrow gas layer at the heating surface. The film model for the fluidized bed heat transfer assumes that the heat is transferred only by conduction through the thin gas film or gas boundary layer adjacent to the heating surface. The effect of particles is to erode the film and reduce its resistive effect, as shown by Fig. 12.3. The heat transfer coefficient in the film model can be expressed as... 

Measurements of heat transfer in circulating fluidized beds require use of very small heat transfer probes, in order to reduce the interference to the flow field. The dimensions of the heat transfer surface may significantly affect the heat transfer coefficient at any radial position in the riser. All the treatment of circulating fluidized bed heat transfer described is based on a small dimension for the heat transfer surface. The heat transfer coefficient decreases asymptotically with an increase in the vertical dimension of the heat transfer surface [Bi et al., 1990]. It can be stated that the large dimensions of the heat transfer surface... 

Grace, J. (1982). Fluidized-Bed Heat Transfer. In Handbook of Multiphase Systems. Ed. G. 

Mickley, H. S., Fairbanks, D. F. and Hawthorn, R. D. (1961). The Relation Between the Transfer Coefficient and Thermal Fluctuations in Fluidized Bed Heat Transfer. Chem. Eng. Prog. Symp. Ser., 57(32), 51. 

Grace, J. R. Fluidized bed heat transfer. In Handbook of Multiphase Flow (Hestroni, G. ed.), pp. 9-70. McGraw-Hill Hemisphere, Washington, DC, 1982. 

Wen, C.Y., Leva, M., "Fluidized-Bed Heat Transfer - a Generalized Dense Phase Correlation, AIChE Journal, 1956, 482. 

G. Flamant, J. D. Lu, and B. Variot, Towards a Generalized Model for Vertical Walls to Gas-Solid Fluidized Beds Heat Transfer—II. Radiative Transfer and Temperature Effects, Chem. Eng Sci. (48/13) 2493,1993. 

L. Glicksman, Circulating Fluidized Bed Heat Transfer, in Circulating Fluidized Bed Technology II, R Basu and J. F. Large eds., Pergamon Press, Oxford, 1988. 

Shakhova NA, Minaev GA. Aerodynamics of jets discharged into fluidized beds. Heat Transfer Soviet Research 4(1) 133-142, 1972. 

Botterill JSM, Desai M. Limiting factors in gas-fluidized bed heat transfer. Powder Tech 6 231-238, 1972. 

Glicksman LR. Circulating fluidized bed heat transfer. In Basu P, Large JF, eds. Circulating Fluidized Bed Technology 11. Oxford Pergamon Press, 1988,... 

Mickley H, Fairbanks D, Hawthorn R. The relation between the transfer coefficient and thermal fluctuations in fluidized bed heat transfer. Chem Eng Prog Symp Ser 57(32) 51-60, 1961. 

Ross K, Pence D. Wavelet and fractal analysis of fluidized bed heat transfer, HTD 351. Proc ASME Heat Transfer Div 1 245-253, 1997. 

Kollbach J, Dahm W, Rautenbach R. Continuous cleaning of heat exchanger with recirculating fluidized bed. Heat Transfer Engineering 8(4) 26-32, 1987. 

Rautenbach R, Kollbach J. New developments in fluidized bed heat transfer for preventing fouling. Swiss Chem 8(5) 47-55, 1986. 

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