Hydrogen and fuel cells

The letter by Donald Anthrop on hydrogen and fuel cells (OGJ, Oct. 13, 2003, p. 10) commented on my letter on the topic (OGJ, Aug. 25, 2003, 10). I would like to respond to that letter.I emphasized in my original letter that one needs to go beyond energy efficiency calculations for the purpose of comparing different energy conversion and usage technologies. In his letter, Anthrop indeed did that to show resource constraints of electrolysis hydrogen and potential CO2 emissions increases of electrolysis hydrogen with coal-based electricity. This certainly confirmed my point that energy efficiency calculations are not particularly useful if done in isolation. On a technical note, energy effi...

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