Gas properties#
This property package provides the gas phase properties for the chemical looping combustion of methane. The components modeled are methane, carbon dioxide, and water.
Flow basis: Molar
Units: SI units
State Variables:
The state block supports the following state variables:
Component molar flowrate in mol/s,
Pressure in bar,
Component mole fraction in (dimensionless),
Temperature in K
Lists:
Component list - [CH4, CO2, H2O]
Shomate parameter list - [1 to 8]
Viscosity parameter list - [1 to 4]
Thermal conductivity parameter list - [1 to 4]
Parameters:
Parameter Name |
Symbol |
Description |
Units |
Reference |
---|---|---|---|---|
|
\(mw_{j}\) |
Molecular weights of gas components indexed by component list |
kg/mol |
[1] |
|
\(H_{form,j}\) |
Component molar heats of formation indexed by component list |
J/mol |
[1] |
|
\(CP_{j,i}\) |
Heat capacity parameters indexed by component list and shomate list |
[1] |
|
|
\(\mu_{param,j,i}\) |
Viscosity parameters indexed by component list and viscosity list |
[2] |
|
|
\(k_{param,j,i}\) |
Thermal conductivity parameters indexed by component list and thermal conductivity list |
[2] |
|
|
\(V_{param,j}\) |
Diffusion volume parameters indexed by component list |
[3] |
|
|
\(R\) |
Gas constant |
kJ/mol.K |
Variables:
Variable Name |
Symbol |
Description |
Units |
---|---|---|---|
|
\(F_{mass}\) |
Component molar flowrate |
mol/s |
|
\(P\) |
Pressure |
bar |
|
\(y_{j}\) |
Component mole fractions indexed by component list |
None |
|
\(T\) |
Temperature |
K |
|
\(mw\) |
Molecular weight of gas mixture |
kg/mol |
|
\(C_{g}\) |
Molar density/concentration |
mol/m3 |
|
\(C_{g,j}\) |
Component molar concentration indexed by component list |
mol/m3 |
|
\(\rho_{mass}\) |
Mass density |
kg/m3 |
|
\(\mu_{vap}\) |
Mixture dynamic viscosity |
kg/m.s |
|
\(D_{vap,j}\) |
Component diffusion in a gas mixture indexed by component list |
cm2/s |
|
\(k_{vap}\) |
Thermal conductivity of gas |
kJ/m.K.s |
|
\(c_{p,mol,j}\) |
Pure component molar heat capacities indexed by component list |
J/mol.K |
|
\(c_{p,mol}\) |
Mixture heat capacity, mole-basis |
J/mol.K |
|
\(c_{p,mass}\) |
Mixture heat capacity, mass-basis |
J/kg.K |
|
\(H_{mol,j}\) |
Pure component enthalpies indexed by component list |
J/mol |
|
\(H_{mol}\) |
Molar enthalpy of gas mixture |
J/mol |
Methods:
Sum of component fractions:
Molecular weight of gas mixture:
Molar density:
Component molar density:
Mass density:
Mixture dynamic viscosity, see reference [2] for parameters:
Thermal conductivity, see reference [2] for parameters:
Diffusion of component in a multicomponent gas mixture, see reference [3] for parameters:
Molar heat capacity of component, see reference [1]:
Molar heat capacity of gas mixture:
Mass heat capacity of gas mixture:
Molar enthalpy of component, see reference [1]:
Molar enthalpy of gas mixture:
References:
National Institute of Standards and Technology, NIST Chemistry WebBook, (n.d.). (accessed March 10, 2018).
R.H. Perry, D.W. Green, Perry’s Chemical Engineering Handbook, 1997, McGraw-Hill, n.d.
Poling, B.E., Prausnitz, J.M. and O’connell, J.P., 2001. Properties of gases and liquids. McGraw-Hill Education.