Hydrogen and fuel cellsTom Standing furnished an excellent rebuttal to Michael Wang's letter, "Hydrogen as a Transportation Fuel" (OGJ, Aug 25, 2003, p. 10). Some additional data confirm Standing's thesis that fuel cells constitute a transportation energy source whose time has not arrived.Although Mr. Wang acknowledges that "... electrolysis hydrogen is not a preferable way to deliver hydrogen for fuel cell vehicles," he then states, "... one needs to go beyond energy efficiency calculations. With electrolysis hydrogen, energy feedstocks other than petroleum [such as natural gas, coal, hydropower] could be used for hydrogen production. Thus, even with relatively poor overall energ...

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