Abstract
Nowadays, the operation of pit furnaces without air preheating is not acceptable. However, a deposit growth on the tubes of air preheaters significantly decreases their efficiency. This paper presents a two-dimensional simulation of the phenomenon of deposition on the tubes of air preheaters with a staggered tube layout. It has been shown that it is possible to predict the deposit shape and its effect on heat transfer from combustion gas to combustion air.Keywords:
pit furnaces, deposit, numerical simulation, heat transferReferences
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[2] Tomeczek J., Wiśniewski T., Pressure loss in tubular heat recuperators, Gaswärme International, 49(4): 4240–4244, 2000.
[3] Israel R., Rosner D.E., Use of a generalized Stokes number to determine the aerodynamic capture efficiency of non-Stokesian particles from a compressible gas Flow, Aerosol Science and Technology, 2(1): 45–51, 1982.
[4] Yilmaz S., Cliffe K.R., Particle deposition simulation using the CFD code FLUENT, Journal of Institute of Energy, 73(494): 65–68, 2000.
[5] Tomeczek J., Wacławiak K., Two-dimensional modelling of deposits formation on platen super-heaters in pulverized coal boilers, Fuel, 88: 1466–1471, 2009.
[6] Perez M.G., Vakkilainen E., Hyppanen T., 2D dynamic mesh model for deposit shape prediction in boiler banks of recovery boilers with different tube spacing arrangements, Fuel, 158: 139–151, 2015.
