Exam Question
Discuss the importance of the following to be examined for meeting EEDI limitations: (16)
(a) Slimmer vessels with lower block coefficients
(b) Long-Stroke engines
(c) Low revolution large diameter propellers.
Class 2 (2nd Engineer)
SC&S
📅 Feb 2024
Reference Answer
### Introduction to EEDI
The Energy Efficiency Design Index (EEDI) is a measure established by the IMO (MARPOL Annex VI) to promote the use of more energy-efficient equipment and engines in new ships. The EEDI is a complex formula that represents the CO2 emissions per unit of transport work. The simplified concept is:
$$ EEDI = \frac{\text{CO}_2 \text{ Emission}}{\text{Transport Work}} \approx \frac{\text{Power} \times SFC \times C_F}{\text{Capacity} \times \text{Speed}} $$
Where:
The Energy Efficiency Design Index (EEDI) is a measure established by the IMO (MARPOL Annex VI) to promote the use of more energy-efficient equipment and engines in new ships. The EEDI is a complex formula that represents the CO2 emissions per unit of transport work. The simplified concept is:
$$ EEDI = \frac{\text{CO}_2 \text{ Emission}}{\text{Transport Work}} \approx \frac{\text{Power} \times SFC \times C_F}{\text{Capacity} \times \text{Speed}} $$
Where:
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