Class: `HydrogenChloride`

Description

The HydrogenChloride class represents the properties and constants for Hydrogen Chloride (HCl).
It provides physical and thermodynamic properties required in process engineering simulations and calculations.
All constants are from Perry's Chemical Engineers' Handbook, 8th ed., Section 2 (compound no. 185).

Properties

name (string): Hydrogen Chloride
formula (string): HCl
molecular_weight (float): 36.461 g/mol

Class Reference

class HydrogenChloride()

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
* phase: str, default = None ("liquid" or "gas" overrides the vapor-pressure test)

Methods

The properties of the HydrogenChloride 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 pressure and vapor pressure. (At standard conditions hydrogen chloride is a gas; it boils at 188.1 K (-85.1 °C) at 1 atm by its Table 2-8 row.)
density():
Liquid Phase: DIPPR Eq. 105 (Perry's Table 2-32)
Gas Phase: Uses the Ideal Gas Law
specific_heat():
Liquid Phase: Polynomial function of temperature (Perry's Table 2-153)
Gas Phase: Ideal-gas heat capacity (Cp), DIPPR Eq. 107 (Perry's Table 2-156)
viscosity():
Liquid Phase: DIPPR Eq. 101 (Perry's Table 2-313)
Gas Phase: Uses Sutherland’s Law with the base class's air constants (no gas viscosity data for this component yet)
thermal_conductivity():
Liquid Phase: Polynomial function of temperature (Perry's Table 2-315)
Gas Phase: Vapor thermal conductivity (k), DIPPR Eq. 102 (Perry's Table 2-314)
vapor_pressure(): DIPPR Eq. 101 (Perry's Table 2-8).
enthalpy(): Enthalpy of vaporization (ΔHvap), DIPPR Eq. 106 (Perry's Table 2-150). It is 0 above the critical temperature.

Examples

from processpi.components import HydrogenChloride
from processpi.units import *

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

Output

gas
1.490309 kg/m3
1.8e-05 Pa·s (dynamic)
799.309279 J/kgK
0.01443 W/mK
4722161.037697 Pa
254253.275539 J/kg

Class: HydrogenChloride