Class: `Methanol`

Description

The Methanol class represents the properties and constants for Methanol (CH₃OH).
It provides physical and thermodynamic properties required in process engineering simulations and calculations.

Properties

name (string): Methanol
formula (string): CH₃OH
molecular_weight (float): 32.04 g/mol

Class Reference

class Methanol()

Parameters:
temperature: Temperature, default = Temperature(25,"C")
pressure: Pressure, default = Pressure(1,"atm")
density: Density, default = None
specific_heat: SpecificHeat, default = None
viscosity: Viscosity, default = None
thermal_conductivity: ThermalConductivity, default = None
vapor_pressure: Pressure, default = None
enthalpy: HeatOfVaporization, default = None

Methods

The properties of the Methanol class are calculated using the following methods, inherited from the base Component class.

phase(): Detects the phase of the substance ("liquid" or "gas") by comparing the system temperature and vapor pressure. (At standard conditions, methanol is a liquid.)
density():
Liquid Phase: Uses DIPPR or experimental correlation
Gas Phase: Uses the Ideal Gas Law
specific_heat(): Calculates specific heat capacity (Cp) as a polynomial function of temperature
viscosity():
Liquid Phase: Uses DIPPR correlation
Gas Phase: Uses Sutherland’s Law
thermal_conductivity(): Calculates thermal conductivity (k) as a polynomial function of temperature
vapor_pressure(): Calculates vapor pressure (Pvap) using an Antoine-type correlation
enthalpy(): Calculates the enthalpy of vaporization (ΔHvap) using a correlation based on reduced temperature

Examples

from processpi.components import Methanol
from processpi.units import *

ch3oh = Methanol(temperature=Temperature(25, "C"))
print(ch3oh.density().to("kg/m3"))
print(ch3oh.viscosity().to("Pa·s"))
print(ch3oh.specific_heat().to("J/kgK"))
print(ch3oh.thermal_conductivity().to("W/mK"))
print(ch3oh.vapor_pressure().to("Pa"))
print(ch3oh.enthalpy().to("J/kg"))

Class: Methanol