Tanker Cargo Heating Fuel & Cost Calculator

Ship Universe Maritime Tool

Tanker Cargo Heating Fuel & Cost Calculator

Estimate tanker cargo heat-up energy, temperature-maintenance load, boiler or thermal-heater fuel consumption, heating cost, required heating capacity and cost per cargo tonne. Advanced mode calculates tank heat loss from surface area and overall heat-transfer coefficient while adding waste-heat contribution, circulation-pump fuel, carbon cost and heater-capacity screening.

Heat-Up Energy

Cargo mass × specific heat × required temperature rise

Voyage Heat Loss

Estimate heat required to maintain cargo temperature during transit

Fuel & Capacity

Convert useful heat demand into fuel, cost and required heater output

Cargo & Temperature

Use cargo-specific thermal properties and the required loading-to-discharge temperature plan.

Cargo quantity

metric tonnes

Cargo specific heat

kJ/kg·°C

Use cargo-specific data where available.

Initial cargo temperature

°C

Target cargo temperature

°C

Planned heat-up time

hours

Temperature-maintenance period

days

Heat Loss & Heating System

Average ambient / sea temperature

°C

Estimated heat loss at target temperature

Use vessel or heating-system data where available.

Thermal design margin

Waste / recovered heat contribution

% heat demand

Boiler / thermal-heater efficiency

Available useful cargo-heating capacity

Fuel & Cost

Heating fuel lower heating value

MJ/kg

Heating fuel price

$ /MT

Optional fuel CO2 factor

tCO2/MT fuel

Optional carbon / compliance cost

$ /tCO2

Other cargo-heating cost

Cargo Heat-Up Requirement

Advanced mode separates cargo sensible heat, tank heat loss, piping loss and other heat-up load.

Cargo quantity

metric tonnes

Cargo specific heat

kJ/kg·°C

Initial cargo temperature

°C

Target cargo temperature

°C

Planned heat-up time

hours

Other tank / structure heat-up load

Tank & Voyage Heat Loss

Average ambient / sea temperature

°C

Effective heated tank surface area

m²

Overall heat-transfer coefficient

W/m²·K

Piping / manifold fixed heat loss

Temperature-maintenance period

days

Thermal design margin

Heating Plant & Fuel

Waste / recovered heat contribution

% heat demand

Boiler / thermal-heater efficiency

Heating fuel lower heating value

MJ/kg

Heating fuel price

$ /MT

Available useful cargo-heating capacity

Circulation pump electrical load

Pump operating duty

Generator SFOC for circulation power

g/kWh

Emissions & Additional Cost

Optional fuel CO2 factor

tCO2/MT fuel

Optional carbon / compliance cost

$ /tCO2

Other cargo-heating OPEX

Cargo Heating Fuel & Cost Results

Simple cargo heating estimate

Enter cargo data

Enter cargo quantity, specific heat, temperatures, heat-up time and heating-system assumptions to estimate cargo heating fuel and cost.

Total Heating Fuel

N/A

Fired heating fuel plus circulation-power fuel where modeled

Total Heating Cost

N/A

Fuel, optional carbon cost and entered additional heating OPEX

Temperature Rise

N/A

Cargo Sensible Heat

N/A

Heat Loss Energy

N/A

Useful Heat Demand

N/A

Recovered Heat

N/A

Fired Heater Fuel

N/A

Warm-Up Fuel Rate

N/A

Maintenance Fuel / Day

N/A

Required Peak Heat Duty

N/A

Heater Capacity Utilization

N/A

Heating Cost / Cargo Tonne

N/A

Heating Fuel / Cargo Tonne

N/A

Circulation Power Fuel

N/A

CO2 Emissions

N/A

Thermal Energy Breakdown

Heating Cost Breakdown

Cargo Heating Summary

Fuel Cost Sensitivity Thermal demand vs fuel price

Heat Demand \ Fuel Price	-20%	Base	+20%

Model approach: cargo heat-up energy is calculated from mass × specific heat × temperature rise. Heat-loss energy is added during warm-up and temperature maintenance. Advanced mode estimates tank heat loss from U × area × temperature difference and adds fixed piping loss. A design margin is applied to useful heat demand, recovered heat reduces fired-heater demand, and fuel consumption is calculated from useful fired heat, heater efficiency and entered fuel heating value.

Planning estimate only. Actual tanker cargo heating demand depends on cargo properties, viscosity, loading temperature, tank geometry, insulation condition, tank adjacency, sea and air temperature, deck exposure, piping losses, cargo circulation, coil or heat-exchanger performance, steam or thermal-oil conditions, boiler loading, waste-heat availability and operational procedure. This calculator does not determine cargo compatibility, maximum allowable heating rate, safe heating temperature or charterparty responsibility. Use cargo instructions, vessel procedures, heating-system data, class requirements and contractual terms for operational decisions.

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