# Static pressure in ducts and vessel (1 Viewer)

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#### GordonC

If air is venting thru a 10" duct and there is a static pressure drop of
2” water column for every 100’ of length at 2000 cfm and the duct opens to a 1000 cubic feet airtight vessel and exits through another 100’ of 10” duct how can you find the pressure drop for the tank alone?

#### Q_Goest

Homework Helper
Gold Member
Hi Gordon. You can add up the pressure losses for each individual portion of the system to come up with a total pressure loss. The loss for the tank, assuming it's large relative to the duct diameter, is only the entrance and exit losses. There's some discussion of that here:
http://utwired.engr.utexas.edu/che354/mom/pfit.ppt [Broken]
and here:

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