CFD application for coal/air balancing in power plants |
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| Authors: | Sowjanya Vijiapurapu Jie Cui Sastry Munukutla |
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| Institution: | 1. Mechanical Engineering Department, Tennessee Technological University, P.O. Box 5014, Cookeville, TN 38505, USA;2. Mechanical Engineering Department, Center for Energy Systems Research, Tennessee Technological University, P.O. Box 5014, Cookeville, TN 38505, USA |
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| Abstract: | Unbalanced coal/air flow in the pipe systems of coal-fired power plants will lead to non-uniform combustion in the furnace, and hence a overall lower efficiency of the boiler. A common solution to this problem is to put orifices in the pipe systems to balance the flow. It is well known that if the orifices are sized to balance clean air flow to individual burners connected to a pulverizer, the coal/air flow would still be unbalanced and vice versa. However, the current power industry practice throughout the world is to size orifices for balancing the clean air flow and accept the resulting imbalance in coal/air flow. Field tests are mostly conducted to verify a balanced clean air flow. |
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| Keywords: | CFD Numerical modelling Coal/Air balancing Power plant |
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