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?

<p>Oxidation and viscosity concerns due to shelf life (D)</p> Signup and view all the answers

What is the purpose of the ISO 8217 standards?

<p>To set biofuel specifications for marine use (C)</p> Signup and view all the answers

What is the role of biofuels in reducing GHG emissions?

<p>To absorb combustion-released CO2 (B)</p> Signup and view all the answers

What is the challenge faced by sector trials of biofuels?

<p>Scalability challenges (B)</p> Signup and view all the answers

What is the target of the EEDI initiative?

<p>30-50% CO2 emission reduction by 2025 or 2030 (D)</p> Signup and view all the answers

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

<p>Global availability of oil (A)</p> Signup and view all the answers

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

<p>Technical limitations in extracting CO2 from exhausts (D)</p> Signup and view all the answers

Which generation of biofuels is derived from food sources?

<p>First-generation (A)</p> Signup and view all the answers

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

<p>It reduces maintenance and emissions (D)</p> Signup and view all the answers

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

<p>Scalability challenges (D)</p> Signup and view all the answers

What is the purpose of the EEDI initiative?

<p>To reduce CO2 emissions from marine engines (B)</p> Signup and view all the answers

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

<p>Land use impacts (C)</p> Signup and view all the answers

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