Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel
Green Car Congress
AUGUST 30, 2009
Current Legal Requirement for Use of Anhydrous Ethanol in the United States. Essentially, the lower energy content of hydrous ethanol is counteracted by increasing engine performance due to higher heat of vaporization of ethanol and water in comparison with gasoline and anhydrous blends. 40 CFR § 80.27 Pursuant to 40 CFR § 80.27(a)(2):
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