Tank

A Tank node defines a tank onboard a vessel used for storage of fuel. Examples of tanks are the conventional tanks for storage of heavy fuel oil and cylindrical tanks for storing liquefied gas.

Example:

Tank "fuel_oil_tank" {
    FuelTypes = [OIL]
    Size = 5000
    
    CAPEX = 500
    OPEX = 5
}

Attributes

CAPEX

This attribute represents the CAPEX (capital expenditure) for installing the machinery.

• Data type: Float, Forecast, Variable

• Example values:

  • 1000

  • Forecast("name")

• Unit: USD/m³

• Minimum value: 0

• Default: 0

OPEX

This attribute represents the OPEX (operational expenditure) for maintaining the machinery annually.

• Data type: Float, Forecast, Variable

• Example values:

  • 10

  • Forecast("name")

• Unit: USD/m³/year

• Minimum value: 0

• Default: 0

Lifetime

This attribute sets the lifetime of the machinery.

• Data type: Float, Forecast, Variable

• Example values:

  • 25

  • Forecast("name")

• Unit: Years

• Minimum value: 0

• Default: Vessel lifetime.

Replacement

This attribute sets the fraction of CAPEX paid when part of the machinery is replaced at the end of the part’s lifetime.

• Data type: Float, Forecast, Variable

• Example values:

  • 0.5

  • Forecast("name")

• Unit: Fraction

• Minimum value: 0

• Default: 1

FuelTypes

This attribute sets the types of fuel that can be stored in the tank. At least one fuel type must be assigned.

• Data type: List of IDs

• Legal values: FuelTypeID

• Example values:

  • OIL

  • [OIL, METHANOL]

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

Size

This attribute sets the volumetric size of the tank in cubic meters.

• Data type: Float

• Example value: 8000

• Unit: Cubic Meter (m3)

• Minimum value: 0

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