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It is a dry day, no rain, or mositure in the inlet ductwork. The 10,500 acfm is measured at the fan discharge, which is downstream from the baghouse.

The inlet temperature of a baghouse under negative pressure is 400 F and the outlet temperature is 210 F. The volume of air is 10,500 acfm. (baghouse is in poor condition). How do I determine the actual volume given this information?