Preliminary Study
Exploratory Scenario Analysis
01.
- Preliminary Analysis - Reference Point
The initial step in exploring the possibilities of using alternative fuels and their mixtures in various ship engines, with the aim of promoting greener maritime transportation, involves studying the energy flows of conventional fuels.
Subsequently, this study of energy flows in conventional vessels is translated into Energy-Mass Balance diagrams (flowcharts) through the use of commercial software packages and appropriately configured computational tools. These diagrams enable the assessment and comparison of various scenarios effectively.
These flowcharts establish reference points and facilitate the extraction of meaningful conclusions.
The issues that need to be explored are as follows:
- Use of more than one fuel on board
- Type of fuels in use and how they are combined
- How they affect the engines
- CO2 capture on board and unloading in port
- Energy integration
- Integrated design perspective
- Low carbon fuels are stored at sub-zero temperatures
- CO2 is stored at sub-zero temperatures
- Energy integration can produce positive results
- Water saving
Alternative fuels and their mixtures, which will be explored gradually, present various advantages, such as:
- High, adequate or low energy density
- Zero carbon footprints
But they are also accompanied by challenges that need to be addressed:
- Energy demands during cooling
- Issues of origin and quantities
- Network & security issues
Project Challenges:
- Alternative Fuels
- How much better are alternative solutions?
- Is the investment transition economically sustainable and safe?
- CO2 capture at Sea (Carbon Capture & Utilization)
- Evaluation of CCU in relation to the additional energy required for CO2 capture
- Can the additional CO2 production be limited through energy integration?
- What are the environmental impacts of capture methods (amines, membranes)?
02.
-
Scenario 1:
Co-generation with Gas
Turbines
03.
-
Scenario 2:
Energy Recovery System with two-stroke Engines
04.
-
Scenario 3:
Energy Recovery System with Gas Turbines
05.
- Preliminary Results
In these early stages of altfuels@shiptypes project there are already positive outcomes.
Scenarios are evaluated and assessed through the new computational tool with clear indication of at minimum a 25% of energy improvement.
altfuels@shiptypes will continue exploring alternative fuels and different mixtures as well as various types of engines, aiming at offering innovative solutions regarding both various chemical procedures (eg CO2 capture, CCU) as well as technological advancements (engines).
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Project Structure
Work Units
Preliminary Study
Deliverables
