RCAIDE.Library.Attributes.Propellants.Liquid_Petroleum_Gas

Liquid_Petroleum_Gas#

class Liquid_Petroleum_Gas(*args, **kwarg)[source]#

Bases: Propellant

A class representing Liquid Petroleum Gas (LPG) fuel properties and composition for propulsion applications.

tag#

Identifier for the propellant (‘Liquid_Petroleum_Gas’)

Type:

str

reactant#

Oxidizer used for combustion (‘O2’)

Type:

str

density#

Fuel density in kg/m³ (509.26)

Type:

float

specific_energy#

Specific energy content in J/kg (43.1e6)

Type:

float

energy_density#

Energy density in J/m³ (21949.1e6)

Type:

float

use_high_fidelity_kinetics_model#

Flag for using detailed chemical kinetics (False)

Type:

bool

fuel_surrogate_chemical_properties#
Simplified chemical composition for surrogate model
  • C3H8float

    Propane fraction (0.6)

  • C4H10float

    Butane fraction (0.4)

Type:

dict

fuel_chemical_properties#
Detailed chemical composition for high-fidelity model
  • NC10H22float

    n-Decane fraction (0.16449)

  • NC12H26float

    n-Dodecane fraction (0.34308)

  • NC16H34float

    n-Hexadecane fraction (0.10335)

  • IC8H18float

    iso-Octane fraction (0.08630)

  • NC7H14float

    n-Heptene fraction (0.07945)

  • C6H5C2H5float

    Ethylbenzene fraction (0.07348)

  • C6H5C4H9float

    Butylbenzene fraction (0.05812)

  • C10H7CH3float

    Methylnaphthalene fraction (0.10972)

Type:

dict

global_warming_potential_100#
100-year global warming potentials
  • CO2float

    Carbon dioxide (1)

  • H2Ofloat

    Water vapor (0.06)

  • SO2float

    Sulfur dioxide (-226)

  • NOxfloat

    Nitrogen oxides (52)

  • Sootfloat

    Particulate matter (1166)

  • Contrailsfloat

    Contrail formation (11)

Type:

Data

Notes

LPG is stored as a liquid under moderate pressure at ambient temperature. The composition can vary seasonally and by region, but typically consists of a propane-butane mixture.

Definitions

‘Surrogate Model’

Simplified two-component representation using propane and butane

‘High-Fidelity Model’

Detailed representation including aromatic and aliphatic hydrocarbons

‘Global Warming Potential’

Relative measure of heat trapped in atmosphere compared to CO2

Major Assumptions

  • Surrogate model captures main combustion characteristics

  • Air composition is standard atmospheric