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guapka [62]
3 years ago
9

What friction rate should be used to size a duct for a static pressure drop of 0.1 in wc if the duct has a total equivalent leng

th of 150 ft
Engineering
1 answer:
skad [1K]3 years ago
6 0

Answer:

0.067wc

Explanation:

The formula is actual static pressure loss = (total equivalent divided by 100) multiplied by rate of friction

We substitute values

actual static pressure = 0.1

Total equivalent length = 150 ft

0.1 = (150ft/100) multiplied by Rate of friction

Friction rate at 100ft = 0.067

So we have that the required friction needed is 0.067wc

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0.845\ \text{N}

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Change in acceleration due to gravity due to change in altitude is given by

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