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    ENCH607-ENPE625 Assignment-01

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    This document contains an assignment with multiple questions regarding equations of state and properties of gas mixtures. It asks the student to: 1) Calculate the molar volume of 2,3-dimethyl-butane gas using various equations of state at 600K and 5.65MPa. 2) Calculate the molar volume of a mixture of n-octane and n-butane at various conditions using different equations of state. 3) Calculate the volume of 100kg of CO2 at 4MPa and 50°C using various equations of state. 4) Calculate properties like molar volume and density of a multi-component gas mixture at specific conditions using different methods.

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    ENCH607-ENPE625 Assignment-01

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    328 views1 page
    This document contains an assignment with multiple questions regarding equations of state and properties of gas mixtures. It asks the student to: 1) Calculate the molar volume of 2,3-dimethyl-butane gas using various equations of state at 600K and 5.65MPa. 2) Calculate the molar volume of a mixture of n-octane and n-butane at various conditions using different equations of state. 3) Calculate the volume of 100kg of CO2 at 4MPa and 50°C using various equations of state. 4) Calculate properties like molar volume and density of a multi-component gas mixture at specific conditions using different methods.

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    ENCH607-ENPE625 Assignment-01

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    This document contains an assignment with multiple questions regarding equations of state and properties of gas mixtures. It asks the student to: 1) Calculate the molar volume of 2,3-dimethyl-butane gas using various equations of state at 600K and 5.65MPa. 2) Calculate the molar volume of a mixture of n-octane and n-butane at various conditions using different equations of state. 3) Calculate the volume of 100kg of CO2 at 4MPa and 50°C using various equations of state. 4) Calculate properties like molar volume and density of a multi-component gas mixture at specific conditions using different methods.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    328 views1 page

    ENCH607-ENPE625 Assignment-01

    Uploaded by

    Ghost Rider
    This document contains an assignment with multiple questions regarding equations of state and properties of gas mixtures. It asks the student to: 1) Calculate the molar volume of 2,3-dimethyl-butane gas using various equations of state at 600K and 5.65MPa. 2) Calculate the molar volume of a mixture of n-octane and n-butane at various conditions using different equations of state. 3) Calculate the volume of 100kg of CO2 at 4MPa and 50°C using various equations of state. 4) Calculate properties like molar volume and density of a multi-component gas mixture at specific conditions using different methods.

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    of 1

    ENCH 607/ENPE 625/Assignment #01 Page 1 of 1 September 19, 2020

    Due date: September 28, 2020

    ENCH 607/ENPE 625


    Assignment 01-Introduction and equations of state
    1. A tank contains 2,3-dimethyl-butane gas (Mw = 86.18 Kg/Kmol) at 600 K and 5.65 MPa.
    The gas has a critical temperature of 500 K, a critical pressure of 31 atm and an
    acentricity () of 0.247. Determine the followings:
    a. Calculate the molar volume that the gas would occupy by using:
    i. The ideal gas law?
    ii. The generalized compressibility chart?
    iii. The Pitzer-Curl Tables?
    iv. The Peng Robinson equation of state?
    b. Using the van der Waals equation, estimate the pressure (kPa) that 40.6 kg of the
    gas would exert in a volume of 6 m3 at 630 K?

    2. N-octane (MW =114 kg/kmol) has a critical temperature of 568.8 K, a critical pressure of
    24.5 atm, and an acentricity () of 0.394. N-butane (MW = 58.12 kg/kmol) has a critical
    temperature of 425.2 K, a critical pressure of 37.5 atm, and an acentricity () of 0.1995.
    Calculate the molar volume (m3/kmol) of a mixture of 30% n-octane and 70% n-butane
    (molar) held at 370oC and 6.128 MPa by using the followings:
    a. Ideal gas law?
    b. Generalized compressibility chart?
    c. Pitzer-Curl Tables?
    d. van der Waals equation of state
    e. Peng-Robinson equation of state

    3. Calculate the volume of 100 kg CO2 (MW = 44 g/mol,  = 0.225) at 4 MPa and 50 oC
    using the followings:
    a. Ideal gas law?
    b. Generalized compressibility chart?
    c. Pitzer-Curl Tables?
    d. van der Waals equation of state?
    e. Peng-Robinson equation of state?

    4. A storage tank contains a gas mixture with compositions listed in the table below. The
    tank held at a pressure of 10.19 MPa and a temperature of 271 K. Calculate:
    a. The molar volume (m3/kmol) and the density (kg/m3) of the mixture using the
    Kay’s rule and the Katz correlation?
    b. The molar volume (m3/kmol) and the density (kg/m3) of the mixture using the
    approach of Wichert and Aziz to adjust for CO2 and H2S?
    c. If the gas flows to a processing facility at a rate of 2800 x 103Sm3/d, what is the
    mass flow of the gas in kg/s?
    d. Using the result from part b, and the flow rate from part c, what is the actual
    volumetric flow rate of the gas at the plant in m3/s?
    e. Determine the standard gas flow rate in MMSCFD if the standard conditions are
    60 oF and 14.69 psia?

    Component Mole fraction


    (y)
    N2 0.0050
    CO2 0.2250
    H2S 0.1000
    C1 0.6610
    C2 0.0070
    C3 0.0015
    i-C4 0.0003
    n-C4 0.0002
    1.0000

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