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CFD Applications for Coal/Air Balancing in Power Plants

[+] Author Affiliations
Sowjanya Vijiapurapu, Jie Cui, Sastry Munukutla

Tennessee Technological University, Cookeville, TN

Paper No. IMECE2003-55098, pp. 35-40; 6 pages
doi:10.1115/IMECE2003-55098
From:
  • ASME 2003 International Mechanical Engineering Congress and Exposition
  • Recent Advances in Mechanics of Solids and Structures
  • Washington, DC, USA, November 15–21, 2003
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-3726-2 | eISBN: 0-7918-4663-6, 0-7918-4664-4, 0-7918-4665-2
  • Copyright © 2003 by ASME

abstract

A new method for balancing coal / air flow to individual burners connected to a mill in a pulverized coal fired unit was proposed. A generalized calculation procedure based on this method was developed for sizing the orifices needed for balancing the coal / air flow. Efficient use of commercially available computational fluid dynamics (CFD) software was suggested for the calculation of the pressure drop in pipes with unclear specifications of geometries. The current industry practice is to balance the clean air flow and accept the resulting imbalance in the coal / air flow. By this new method the clean-air flow would be unbalanced in a tailored manner so that balanced coal / air flow would result. In order to implement this new method the power plants would still have to conduct clean air tests only.

Copyright © 2003 by ASME

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