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Meteorology for Air Pollution Control Engineers37

# Meteorology for Air Pollution Control Engineers37 - per...

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Mass / Energy Balance Maccum = Min - Mout + Mformed - Mconsumed Eaccum = Ein - Eout + Eproduced - Econsumed (e.g., 1st law of thermo: U = Q - W)

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Mass Balance Example Example 1.11 (p. 38): humid air dried air 200oC 730 mmHg 50 g H2O condensed in 15 min 20oC 790 mmHg Q = 30 L/min [NO2] = 800 ppm [NO2] = ?? What is the [NO2] in the humid air? Answer: 700 ppm v (Click on table to see spreadsheet calcs)
Bernoulli Equation u2/2 + ∫dP/ + gz = constant (frictionless flow) For small P and incompressible flow, energy

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Unformatted text preview: per unit mass is constant = u2/2 + P/ + gz • u12/2 + P1/ + gz1 = u22/2 + P2/ + gz2 + losses Bernoulli Equation • If using the average cross-sectional flow for u in the Bernoulli equation, the average kinetic energy (~u2) will be poorly estimated. • include a kinetic energy correction factor, dA u u(r) A 1 α A 3 ∫ = ( α = 2 for laminar/circular, 1.01-1.1 for turbulent flow)...
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Meteorology for Air Pollution Control Engineers37 - per...

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