ASSIST ENERGY
Digital support for energy management onboard
The International Maritime Organization (IMO), with the aim of reducing greenhouse gas emissions from international maritime transport by at least 50% by 2050 (compared to 2008), has introduced ambitious and increasingly demanding requirements which impose Shipowners and Shipbuilders to radically review their processes and products.
Thanks to the experience gained in the field of onboard plant engineering and thanks to a team made up of experts in ship design, mechanical, electrical and air conditioning systems, CETENA supports shipping companies and shipbuilding groups by providing consultancy in the evaluation, optimization and monitoring of the energy performance of ships throughout their entire life-cycle.
Being part of the ship design process and having transversal skills, CETENA, through the creation of an energy digital twin of the ship, is able to compare its operating profile with the optimal operating conditions, providing useful indications for containing consumption and emissions. In this context, CETENA has developed the ASSIST Energy system, a decision support tool for the energy management onboard, both related to ship propulsion and extra-propulsive services.
Advantages
ASSIST ENERGY, making use of all the data coming from the monitoring of onboard utilities and through the use of the so-called "Grey-box" models, which combine the characteristics of the physical models ("white-box") with the models derived from artificial intelligence (“black-box”), guarantees continuous updating of the energy digital twin by providing information on:
• Speed profile and optimal trim of the vessel;
• Optimal management of the electrical load on board;
• Optimal management of thermal energy on board (waste heat recovery and steam production)
• Optimal management of the HVAC service (Heat Ventilation & Air Conditioning)
• Optimal management of water production
ASSIST ENERGY, making use of all the data coming from the monitoring of onboard utilities and through the use of the so-called "Grey-box" models, which combine the characteristics of the physical models ("white-box") with the models derived from artificial intelligence (“black-box”), guarantees continuous updating of the energy digital twin by providing information on:
• Speed profile and optimal trim of the vessel;
• Optimal management of the electrical load on board;
• Optimal management of thermal energy on board (waste heat recovery and steam production)
• Optimal management of the HVAC service (Heat Ventilation & Air Conditioning)
• Optimal management of water production ASSIST ENERGY includes a specific module to simulate, monitor and manage the carbon dioxide emission index (CII "Carbon Intensity Indicator") introduced by MARPOL regulations.
This module called "CII Simulator", using the ship's energy model and drawing on its trip planning, is able to simulate and predict:
• The associated fuel consumption;
• The greenhouse gas emissions and the related CII index value;
• The energy efficiency and consumption KPIs.
It also allows to perform trade-off analyses, changing the main parameters that regulate ship energy absorption:
• Vessel speed;
• Hours spent in port and navigation;
• Possibility of connection to the shore power grid to power on-board utilities via the Onshore Power supply (also known as cold ironing);
• Hypothesize different levels of energy efficiency of the propulsive and extra propulsive areas of the ship.
Finally, as a further element of support to the ship/fleet operator, the "CII Simulator" allows the automated creation of consumption reports based on EU-MVR and IMO DCS requirements.
