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Lecture 9: Alternative Fuels

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Questions and Answers

What led to a push away from fossil fuels in the evolution of marine engines?

Environmental advocacy and LNG adoption (correct)

EEDI targets for CO2 emission reduction

Technical limitations of CO2 phase-out

Global availability of oil

What is the goal of the MEPC strategy by 2050?

Elimination of GHG emissions this century

50% GHG reduction (correct)

30-50% CO2 emission reduction

Full extraction of CO2 from exhausts

What is the benefit of using second-generation biofuels in marine applications?

Temporary shift to less carbon-intensive fuels

Suitable for non-arable lands

Derived from food sources

From non-food crops, better for marine use (correct)

What is the concern regarding the storage of biofuels?

Oxidation and viscosity concerns due to shelf life Signup and view all the answers

What is the purpose of the ISO 8217 standards?

To set biofuel specifications for marine use Signup and view all the answers

What is the role of biofuels in reducing GHG emissions?

To absorb combustion-released CO2 Signup and view all the answers

What is the challenge faced by sector trials of biofuels?

Scalability challenges Signup and view all the answers

What is the target of the EEDI initiative?

30-50% CO2 emission reduction by 2025 or 2030 Signup and view all the answers

What was the primary factor that led to diesel engines being designed for oil?

Global availability of oil Signup and view all the answers

What is the current limitation in achieving a full CO2 phase-out?

Technical limitations in extracting CO2 from exhausts Signup and view all the answers

Which generation of biofuels is derived from food sources?

First-generation Signup and view all the answers

What is the benefit of using LNG as a cleaner fuel?

It reduces maintenance and emissions Signup and view all the answers

What is the primary challenge in scaling up the use of biofuels?

Scalability challenges Signup and view all the answers

What is the purpose of the EEDI initiative?

To reduce CO2 emissions from marine engines Signup and view all the answers

What is a potential limitation of using first-generation biofuels in marine applications?

Land use impacts Signup and view all the answers