HW_2_solution

# HW_2_solution - PGE 312-FALL 2007 Physical and Chemical...

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Unformatted text preview: PGE 312-FALL 2007 Physical and Chemical Behavior of Petroleum Fluids I Homework 2 Problem 2-4 . The Pressure is 200 psi in both cases (1) (2) Vapor Pressure of n-butane at 200 ℉ Vapor Pressure of n-butane at 200 ℉ P=200 Psia P= 200 Psia Vapor pressure read from Fig 2.7 of McCain. Problem 2-5. Matching plots above Process Description From 1-2 Phase change from gas to liquid as the vapor pressure curve is crossed. From 2-3 Smooth transition from liquid to gas as we move above the critical point. From 3-4 Gaseous phase. From 4-1 Gaseous phase. Problem 2-7 . The density at the critical point is 10.108 lb/cuft. From ρ L + ρ g 2 = aT + b The average density will be a straight line whose slope can be computed as follows: m = y 2 − y 1 x 2 − x 1 = 13.157 − 11.145 − 253 − ( − 163) = − 0.0224 y = m x − x 1 ¡ + y 1 = − 0.0224 ∗ ¢− 116.7 − − 163 ¡£ + 11.145 y = 10.11 The density of methane at critical point is 10.11 lb/ft 3 ....
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HW_2_solution - PGE 312-FALL 2007 Physical and Chemical...

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