# Air Pollution Engineering Worksheet

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uzbq2010

Engineering

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I have revised problem #1. I have taken standard temperature 528 R according to your text book.

Q1. In Duct A, he gas flow rate is 5000 SCFM, the gas temperature is 350 oF and pressure is 32 inches of water. In Duct B, the gas flow rate is 4000 ACFM, the temperature is 400 oF and
the pressure is -35 inches of water. Calculate the total gas flow rate in Duct C where two
flows combine. Use a barometric pressure of 29.92 inches mercury.
Solution:
Assumptions: Pressure of air at standard condition = 14.669 psi
Temperature at standard condition = 528 oR
And relative humidity at actual temperature = 0% RH
Unit conversions: Atmospheric pressure = 29.9213 inches Hg = 407.189 inches water.
=14.699 psi
And 1 inch water pressure = 0.03609 psi
Formula used:

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