lib.freeSteam module

Library to use freesteam library to calculate water properties with IAPWS-IF97 to meos calculation or in stream calculations, http://freesteam.sourceforge.net

This library is optional, pychemqt has a python implementation for IAPWS-IF97 in file lib/iapws97.py, but if freesteam is available in your system this is faster because is implemented in c++.

All the functionality is included in the main class:

  • Freesteam: Stream definition using freesteam external library

API reference

class lib.freeSteam.Freesteam(**kwargs)[source]

Bases: ThermoWater

Class to define a water stream It can be defined by the pair:

P,T P,h P,s P,v T,s T,x

where:

-T: Temperature, Kelvin -P: Pressure, Pa -x: Quality, [-] -s: entropy, kJ/kgK -h: enthalpy, kJ/kg -v: specific volume, m³/kg

Attributes:
calculable

Check input parameter to define calculation posibility

Methods

calculo()

Calculate procedure

fill
kwargs = {'P': 0.0, 'T': 0.0, 'h': 0.0, 'l': 0.5893, 's': 0.0, 'v': 0.0, 'x': None}
M = 18.015268
Pc = 22064000.0
Tc = 647.096
rhoc = 322.0
Tt = 273.16
Tb = 373.1243
f_accent = 0.3443
momentoDipolar = 1.85498
property calculable

Check input parameter to define calculation posibility

calculo()[source]

Calculate procedure

fill(fase, estado)[source]

References