Elementary Principles 253 - 7.18 (b) H + E k + E p = Q - Ws...

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7- 8 7.18 (b) ΔΔ Δ ±± ± HE EQ W kp s ++= (The system is the liquid stream.) Δ Δ ± ± ± E k mu E p W s = = = 0 0 0 no change in and no elevation change no moving parts or generated currents ch Δ , ± HQQ => 0 (c) Δ ± W s (The system is the water) Δ Δ Δ ± ~ ± ± HT a P E k QT = = = 0 0 0 nd constant no change in and no between system and surroundings Δ , ± EW W ps s =− > for water system 0 bg (d) Δ ± W s (The system is the oil) Δ ± E k = 0 no velocity change ± ± Q W += ± Q < 0 (friction loss); ± W s < 0 (pump work). (e) Δ ± W s (The system is the reaction mixture) Δ ± E k E p W s == = 0 0 given no moving parts or generated current Δ , ± = pos. or neg. depends on reaction 7.19 (a) molar flow: m2 7 3 K k P a 1 m o l L 423 K 101.3 kPa 22.4 L STP m mol min 3 125 122 10 1 434 3 3 . min . = Δ ± ± ± E Q W s ± E k E p W s = 0 0 given no moving parts
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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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