Stack Draft Calculations

In categories: Blog

July 11, 2013

Evaluate stack draft under potential conditions.

A recent request to use the Virtual Energy Audit to predict the amount of stack draft in a revised plant configuration using a common flue provided accurate calculations based on validated predictions. The VEA provided gas flow data including exit temperatures and pressures that allowed convenient calculations under a variety of firing configurations that incorporated the theoretical draft using relative temperature values and the frictional draft values derived from the velocity and frictional factors to compute the natural draft from the furnace combustion. These data will allow for specification of fans as required to overcome any natural draft deficiencies.

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