Sandlercorrespondingstates

Corresponding states utilities from Sandler's 5th ed.

Sandlercorrespondingstates implements a python interface to a corresponding states calculations using charts from Chemical, Biochemical, and Engineering Thermodynamics (5th edition) by Stan Sandler (Wiley, USA). It should be used for educational purposes only.

Installation

Sandlercorrespondingstates is available via pip:

pip install sandlercorrespondingstates

Usage

Command-line

$ sandlercorrespondingstates state -n methane -P 7.5 -T 400 
T                      =   400 kelvin
P                      =   7.5 megapascal
v                      =  0.000434569 meter ** 3 / mole
u                      =  216.113 joule / mole
h                      =  3475.38 joule / mole
s                      = -25.7768 joule / kelvin / mole
Pv                     =  3259.27 joule / mole
Tc                     =  190.4 kelvin
Pc                     =    4.6 megapascal
Tr                     =  2.10084 dimensionless
Pr                     =  1.63043 dimensionless
Z                      =   0.98 dimensionless
h_departure            = -438.148 joule / mole
s_departure            = -1.12968 joule / kelvin / mole
neg_h_dep_over_Tc_read =   0.55 calorie / kelvin / mole
neg_s_dep_read         =   0.27 calorie / kelvin / mole

$ sandlercorrespondingstates delta -n methane -T1 400 -P1 1 -T2 500 -P2 2 --show-states
State-change calculations for methane using Corresponding states equation of state:

State 1:                                                     State 2:
T                      =   400 kelvin                        T                      =   500 kelvin
P                      =     1 megapascal                    P                      =     2 megapascal
v                      =  0.00332579 meter ** 3 / mole       v                      =  0.00207862 meter ** 3 / mole
u                      =  587.746 joule / mole               u                      =  4150.18 joule / mole
h                      =  3913.53 joule / mole               h                      =  8307.41 joule / mole
s                      = -7.97796 joule / kelvin / mole      s                      = -4.04963 joule / kelvin / mole
Pv                     =  3325.79 joule / mole               Pv                     =  4157.23 joule / mole
Tc                     =  190.4 kelvin                       Tc                     =  190.4 kelvin
Pc                     =    4.6 megapascal                   Pc                     =    4.6 megapascal
Tr                     =  2.10084 dimensionless              Tr                     =  2.62605 dimensionless
Pr                     =  0.217391 dimensionless             Pr                     =  0.434783 dimensionless
Z                      =      1 dimensionless                Z                      =      1 dimensionless
h_departure            =     -0 joule / mole                 h_departure            = -15.9327 joule / mole
s_departure            = -0.08368 joule / kelvin / mole      s_departure            = -0.2092 joule / kelvin / mole
neg_h_dep_over_Tc_read =      0 calorie / kelvin / mole      neg_h_dep_over_Tc_read =   0.02 calorie / kelvin / mole
neg_s_dep_read         =   0.02 calorie / kelvin / mole      neg_s_dep_read         =   0.05 calorie / kelvin / mole

Property changes:
ΔT  =    100 kelvin
ΔP  =      1 megapascal
Δh  =  4393.88 joule / mole
Δs  =  3.92832 joule / kelvin / mole
Δu  =  3562.43 joule / mole
Δv  = -0.00124717 meter ** 3 / mole
ΔPv =  831.446 joule / mole
ΔZ  =      0 dimensionless

API

>>> from sandlercorrespondingstates import CSSstate
>>> state = CSState(T=400, P=0.5).set_compound('methane')
>>> print(result.report(additional_vars=['Tc', 'Pc', 'Tr', 'Pr', 'Z', 'h_departure', 's_departure', 'neg_h_dep_over_Tc_read', 'neg_s_dep_read']))
T                      =   400 kelvin
P                      =   0.5 megapascal
v                      =  0.00665157 meter ** 3 / mole
u                      =  595.712 joule / mole
h                      =  3921.5 joule / mole
s                      = -2.08929 joule / kelvin / mole
Pv                     =  3325.79 joule / mole
Tc                     =  190.4 kelvin
Pc                     =    4.6 megapascal
Tr                     =  2.10084 dimensionless
Pr                     =  0.108696 dimensionless
Z                      =      1 dimensionless
h_departure            =  7.96634 joule / mole
s_departure            =  0.04184 joule / kelvin / mole
neg_h_dep_over_Tc_read =  -0.01 calorie / kelvin / mole
neg_s_dep_read         =  -0.01 calorie / kelvin / mole

Release History

• 0.5.0
  • pint integration
• 0.4.1
  • help updated
• 0.3.0
  • delta subcommand added
• 0.2.0
  • StateReporter used
• 0.1.2
  • fixed messaging errors
• 0.1.0
  • Initial release

Meta

Cameron F. Abrams – cfa22@drexel.edu

Distributed under the MIT license. See LICENSE for more information.

https://github.com/cameronabrams

Contributing

1. Fork it (https://github.com/cameronabrams/sandlercorrespondingstates/fork)
2. Create your feature branch (git checkout -b feature/fooBar)
3. Commit your changes (git commit -am 'Add some fooBar')
4. Push to the branch (git push origin feature/fooBar)
5. Create a new Pull Request