Exam Question
Ammonia is widely discussed as a sustainable fuel for future maritime applications-Discuss with specific references to technical, operational, safety and commercial viability of Ammonia as a marine fuel. (16)
Class 1 (Chief Engineer)
Engineering Management
📅 Nov 2024
Reference Answer
Ammonia (NH₃) is a prominent candidate for decarbonizing the maritime industry, aligned with the IMO's GHG reduction targets. Its viability as a marine fuel is assessed across four key domains: Technical, Operational, Safety, and Commercial.
### 1. Technical Feasibility
#### A. Combustion Characteristics
* **Energy Density**: Ammonia has a lower gravimetric energy density of approximately 18.6 MJ/kg. Consequently, it requires about 2.3 times more storage volume compared to Marine Diesel Oil (MDO) for the same energy content, impacting vessel design and cargo capacity.
### 1. Technical Feasibility
#### A. Combustion Characteristics
* **Energy Density**: Ammonia has a lower gravimetric energy density of approximately 18.6 MJ/kg. Consequently, it requires about 2.3 times more storage volume compared to Marine Diesel Oil (MDO) for the same energy content, impacting vessel design and cargo capacity.
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