Class: `AceticAcid`

Description

The AceticAcid class represents the properties and constants for Acetic Acid (CH₃COOH).

This class provides a comprehensive set of physical and thermodynamic properties for Acetic Acid, which are essential for various process engineering calculations. These properties are stored as class attributes and are available for use by other calculation modules within the ProcessPI library.

Properties

name (string): The common name of the compound.
formula (string): The chemical formula (CH₃COOH).
molecular_weight (float): The molar mass in g/mol.

Class Reference

class AecticAcid()

A class for handling Acetic Acid properties.

Parameters:

temperature : Temperature, default = Temperature(35,"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 AceticAcid class are calculated using the following methods, which are inherited from the base Component class.

phase(): Detects the phase of the substance ("gas" or "liquid") by comparing the system pressure to the calculated vapor pressure. The rule is: "gas" if P < P_vap, otherwise "liquid".
density():
- Gas Phase: Calculates density using the Ideal Gas Law
- Liquid Phase: Calculates density using the DIPPR correlation
specific_heat(): Calculates specific heat capacity (Cp) as a polynomial function of temperature
viscosity():
- Liquid Phase: Calculates viscosity (μ) using the DIPPR correlation:
- Gas Phase: Calculates viscosity using Sutherland's Law.
thermal_conductivity(): Calculates thermal conductivity (k) as a polynomial function of temperature
vapor_pressure(): Calculates vapor pressure (Pvap) using the Antoine-style equation
enthalpy(): Calculates the enthalpy of vaporization (ΔHvap) using a correlation based on reduced temperature

Examples

1. Acetic acid at 35 °C

# Importing AceticAcid
>>> from processpi.components import AceticAcid
# Importing Units
>>> from processpi.units import *
# Creating AceticAcid at 35 C Temperature
>>> acetic_acid = AceticAcid(temperature=Temperature(35, "C"))
>>> print(acetic_acid.density().to("kg/m3"))
1031.768882 kg/m3

>>> print(acetic_acid.viscosity().to("Pa·s"))
0.000967 Pa·s (dynamic)

>>> print(acetic_acid.specific_heat().to("J/kgK"))
2099.910505 J/kgK

>>> print(acetic_acid.thermal_conductivity().to("W/mK"))
0.157485 W/mK

>>> print(acetic_acid.vapor_pressure().to("Pa"))
3588.50083 Pa

>>> print(acetic_acid.enthalpy().to("J/kg"))
390401.05436 J/kg

2. Acetic acid at higher temperature (60 °C) with unit conversion

# Creating AceticAcid at 60 C Temperature
>>> acetic_acid_high = AceticAcid(temperature=Temperature(60, "C"))
>>> print(acetic_acid_high.density().to("lb/ft3"))
62.766571 lb/ft3

>>> print(acetic_acid_high.viscosity().to("cP"))
0.702078 cP (dynamic)

Class: AceticAcid