March 2003

Heat Transfer

Heater combustion air duct design and simulation

This method works for box-type and cylindrical furnaces

Gill, B. S., Career Institute of Technology & Management; Banik, S., Biswas, K. P., Malhotra, S., Vohra, A. K., Engineers India Ltd., Research and Development Centre

Burner design is becoming demanding with respect to the fuel fired, excess air requirements and emissions levels. Apart from the burner design, supply of desired combustion air in a multiburner forced- or balanced-draft furnace is crucial to burner performance and, hence, furnace operating efficiency and emissions. A methodology for combustion air manifold design and simulation for box- and cylindrical-type furnaces commonly used in refineries has been developed. The model has been used to design combustion air ducts of commercial-size heaters and validated on scaled-down Perspex models and CFD software. Model validation

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