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AirflowFromPressure ( cfm1 ; sp1 ; sp2 )

Change in Airflow from Change in Static Pressure

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Donald Zijm - Show more from this author
Zijm LLC
http://www.zijm.com

Sample input:

AirflowFromPressure ( 1000 ; .5 ; .9 )

Sample output:

1341.64

Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

cfm1 * ( sp2 / sp1 ) ^ (1 / 2)

Airflow will increase as the square root of the change in static pressure.

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