Abstract




 
   

Vol. 11, No. 2 (May 1998) 61-72   

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  ADVANCE MODELLING AND SIMULATION OF INDUSTRIAL BOILERS
 
 
M. Sadrameli and K. A. Khazaee

Department of Chemical Engineering
Tarbiat Modarres University
Tehran, Iran
 
 
 
 

Abstract    This paper presents some of the results of the simulation in the radiation section of an industrial boiler using an advanced mathematical model. Calculations are described for the flow, heat transfer, and chemical reaction processes occurring within a gas-fired cylindrical furnace. The calculation procedure is a two dimensional one in which the main hydrodynamic variables are the velocity and stream functions. The turbulence formulae are used for this purpose. Mass transfer and chemical reactions are calculated from the model which assumes a single-step chemical reaction. Heat transfer is determined hy the solution of differential equations for the specific enthalpy, and for the radiative fluxes for each of the co-ordinate directions. The resulting system of coupled. non linear, elliptic, partial differential equations gives the velocity and temperature gradients inside the furnace. The results are compared with those reported in the literature and good agreements between them were found.

 

Keywords    Boilers. Heat Transfer, Modelling, Simulation

 

References   

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2. Truelove, J. S. “Furnaces and Combustion Chambers”, Heat Exchanger Design Handbook, Sec. 3.11, 2, (1983).

3. Launder, B. E. and Spalding, D. B. Mathematical Models of Turbulence”, Academic Press, New York, (1972).

4. Pun, W. M. and Spalding, D. B. “A Procedure for Predicting the Velocity and Temperature Distribution in a Confined, Steady, Turbulent, Gaseous, Dffusion Flame”, Imperial College, Mech. Eng. Dept. Rep. SF/TN/11, (1967).

5. Abbasi-Khazaee, K. “Advanced Modelling and Simulation of Industrial Boilers”, MSc Thesis, Tarbiat Modarres University, Iran, (1995).

6. Khalil, E. E. and Whitlaw, J. H. “The Calculation of Local Flow Properties in Two Dimensional Furnaces”, Imperial College, Mech. Eng. Dept. Rep. HTS/74/38, (1975).

7. Gosmann, A. D. and Lockwood, F. C. “Incorporation of Flux Model for Radiation in to a Finite Difference Procedure for Furance Calculation”; Proc. 14th Int. Symp. Comb., Combustion Inst., USA, (1972), 661-671.





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