The gas side pressure drop may be calculated by any number of methods available today, but the following procedures should give sufficient results for heater design. Refer to previous pages for source and explanation of these procedures.
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The formulas, correlations, and methods presented herein should not be considered as being recommended by or used by the sponsors of this site. The purpose of this site is educational and the methods may or may not be suitable for actual design of equipment. Only a fired heater design engineer is qualified to decide if a calculation or procedure is correct for an application.