Ventilation Systems: Operation and Testing - GHDonline
Ventilation Systems: Operation and Testing - GHDonline
Ventilation Systems: Operation and Testing - GHDonline
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Hood Entry Coefficients<br />
Actual Flow<br />
C e = Hypothetical Flow no losses<br />
(4005) (V P ) 0.5 (A) (V P ) 0.5<br />
C e = =<br />
(4005) (S Ph ) 0.5 (A) (S Ph ) 0.5<br />
C e = (V P /S Ph ) 0.5<br />
Hood Entry Coefficients<br />
C e = (V P /S Ph ) 0.5<br />
Typical values for C e are known for some hoods.<br />
For the bench grinder hood with a straight take-off :<br />
C e = 0.78<br />
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