HW_5_Solution - Problem 3-21 nZRT m PV ZRT M m PM density V...

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Problem 3-21 Component Mole Fractions Critical Pressure Critical Temperature Molecular weight Methane 0.8700 666.4 579.8 -116.7 343.3 298.7 16.04 13.96 Ethane 0.0490 706.5 34.6 89.9 549.9 26.9 30.07 1.47 Propane 0.0360 616.0 22.2 206.1 666.1 24.0 44.10 1.59 i-Butane 0.0250 527.9 13.2 274.5 734.5 18.4 58.12 1.45 n-Butane 0.0200 550.6 11.0 305.6 765.6 15.3 58.12 1.16 1.0000 660.8 383.3 19.63 1.67 7.04 From Fig 3-7, Z 0.96 For P= 4650 Psia and T=(180+460) o R y i P ci , psia y i * P ci T c , o F T c , o R y i * T ci P pc T pc T pr = T / T pc P pr = P / P pc i M i i M y ft lb/cu 58 . 13 640 * 10.73 * 0.96 19.63 * 4560 density = = ZRT PM V m density ZRT M m PV nZRT PV = = = =
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Problem 3-23 0.932 Z 580 * 10.73 * 0.0862 0.5 * 1000 nRT PV Z is pressure at this factor - Z the Therefore moles - lbm 0.0862 0.0923 - 0.1785 moles of number new the 1000Psia to drop pressure After moles - lbm 0.1785 n ) 460 120 ( * 73 . 10 * 9 . 0
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This note was uploaded on 04/07/2008 for the course PGE 312 taught by Professor Peters during the Fall '08 term at University of Texas at Austin.

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HW_5_Solution - Problem 3-21 nZRT m PV ZRT M m PM density V...

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