Answer questions thoroughly.
1. Hydrogen is an energy carrier, not an energy source. Explain what this statement means.
2. Currently 95% of the hydrogen used in the U.S. is made from one process. Name this process and comment on whether it should be called renewable energy.
3. Describe three processes for producing hydrogen that would be truly renewable.
4. What do fuel cells mainly produce? ____________
5. Compare the efficiency of a fuel cell to that of a combustion-based power plant.
6. Compare the efficiency of a fuel cell to a gasoline internal combustion engine.
7. Compare the advantages/disadvantages of centralized hydrogen production vs. distributed production.
8. Describe the three ways that hydrogen can be stored (at fueling stations or in vehicles).
9. Describe how a Polymer Electrolyte Membrane fuel cell works.
10. What is a fuel cell?
11. What types of fuel cells are better for electrical power generation?
12. Besides fuel delivery and infrastructure, describe two other challenges / problems with fuel cells that must be overcome before they are ready for prime time.
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