Meteorology for Air Pollution Control Engineers35

Meteorology for Air Pollution Control Engineers35 - At...

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Air Pollution Control II Ideal gas law Mass/energy balance Bernoulli equation …and applications of the above Review of some things you should know: Note: you can see the calculation spreadsheets explaining any worked example here. To do this, exit the show by right-clicking then select “Edit slides.” Then right-click on the answer and select “Worksheet Object…Open.”
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Ideal Gas Law PV = nRT,  = mass/vol, so PM = RT R = 0.08206 L-atm-mol-1-K-1 (Table 1.5 has R in lots of combinations of units)
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Unformatted text preview: At STP (P=1 atm, T=25oC=298K), this gives molar volume of any ideal gas as V/n = RT/1 ≈ 24.466 L/mol Ideal Gas Law • MW = molecular weight (actually, mass) • units: grams/mole (g/mol) • mol is sometimes referred to as “gmol” Ideal Gas Law • To treat “air” as an ideal gas, we need its molecular weight • Air is approximately 78% N2, 21% O2, 1% Ar • Assuming N2, O2, and Ar are ideal gases, MW of air = 0.78(28) + 0.21(32) + 0.01(40) = 28.964 ≈ 29 (g/mol, kg/kmol, lb/lbmol)...
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