Fuel#

A Fuel node defines a fuel which can be used as a bunker fuel onboard a vessel. Examples of fuels are liquefied natural gas and e-ammonia.

Example:

Fuel "liquefied_natural_gas" {
	FuelType = METHANE
	
	LowerHeatingValue = Variable("lower_heating_value_natural_gas")
	MassDensity = Variable("mass_density_liquefied_natural_gas")
	
	set_ttw("carbon_dioxide", Variable("carbon_dioxide_per_natural_gas"))
}

Attributes#

FuelType#

This attribute specifies the type of the fuel.

  • Data type: ID

  • Legal values: FuelTypeID

  • Default: None. Must be defined by the user.

LowerHeatingValue#

This attribute sets the lower heating value of the fuel in GJ/ton.

  • Data type: Float, Variable

  • Example values: 42.6

  • Unit: GJ/ton

  • Minimum value: >0

  • Default: None

MassDensity#

This attribute describes the mass density of the fuel.

  • Data type: Float, Variable

  • Example values: 0.96

  • Unit: ton/m3

  • Minimum value: >0

  • Default: None

Commands#

set_ttw#

This command allows the user to set the tank-to-wake (TTW) emission factor.

  • Primary key type: String (Emission name)

  • Data type: Float, Variable

  • Example values:

    • "emission_name", 2.75

    • "emission_name", Variable("name")

  • Unit: ton emission / ton fuel

  • Default: 0