Elementary Principles 255

# Elementary Principles 255 - 7.22 m (kg/s) 260C, 7 bars H =...

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7- 10 7.22 0 ± m (kg/s) 260°C, 7 bars H = 2974 kJ/kg ² u = 0 (kg/s) 200°C, 4 bars H = 2860 kJ/kg ² u (m/s) ± m ΔΔ Δ Δ ±± ± ± ± ²² () . ± HE EQ W EH mu mH H uH H u kp s k E p QW s ++= =− =− =−= −⋅ = == = 0 2 2 5 2 2 22 9 7 4 2 8 6 0 1 228 10 477 kJ 10 N m kg m / s kg 1 kJ 1 N m s m/s out in in 32 2 2 di bg 7.23 (a) in 5 L/min 0 mm Hg (gauge) Q 100 mm Hg (gauge) out Q 5 L/min Since there is only one inlet stream and one outlet stream, and ± mm m in out = , Eq. (7.4-12) may be written ± ² ± ² ± ± ² ± ² ± ² ± ± ±± ± mU m PV m um g z Q W s U mPV mVP P VP u z W QQ Q s Δ Δ Δ Δ Δ +++ = = =− = = = = d i af 2 2 0 0 0 0 2 given assume for incompressible fluid all energy other than flow work included in heat terms
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## This note was uploaded on 02/27/2012 for the course CHEMICAL E 312 taught by Professor Cheung during the Fall '11 term at The University of Akron.

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