Cargo Heating Monitoring Service has been developed based on the consideration that a comprehensive voyage-specific cargo heating plan could reduce emissions and heating costs.

The first step of the service is the development of a ship specific thermodynamic model for the calculation of the heat losses of each tank as well as of the heat transfer via the heating coils.

Having developed the thermodynamic model, the following process is followed on a voyage by voyage case:

  • The master submits the below data at the beginning of the voyage:
    • a. Cargo type and specification (specific gravity / density and poor point)
    • b. Charterers' instruction for the minimum and discharge temperature
    • c. Ullage of each tank and relevant quantity (m3)
    • d. Passage plan (SECA areas etc.)
    • e. Estimated time of arrival and estimated discharge date (if known)
    • f. Weather condition (Sea and Air temperature if known)
  • Based on the above data, the preliminary heating plan is developed and forwarded to the company giving the following information:
    • a. Estimated boiler off days
    • b. Temperature projection for each day and each tank
    • c. Average cargo temperature projection
  • A ship specific heating log is filled and submitted to HYDRUS daily and the preliminary heating plan is adjusted accordingly. The following data is provided daily based on the submitted records:
    • a. Cargo temperature mean difference
    • b. Cargo temperature drop projection
    • c. Daily temperature target for each tank (in case of heating)
    • d. Steam consumption of each tank (in case of heating)
    • e. Boiler load (in case of heating)
    • f. Estimated fuel oil consumption (in case of heating)
  • At the end of the voyage, an overall assessment with respect to the theoretical / proposed plan as well as to the fuel oil consumption is carried out and forwarded to company.