Estimating the Net Energy Balance of Corn Ethanol

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英文名称：

Estimating the Net Energy Balance of Corn Ethanol

作者：

Hosein Shapouri; James A. Duffield; Michael S. Graboski

工作单位：

USDA's Economic Research Service

来源地址：

https://www.ers.usda.gov/publications/pub-details/?pubid=40674

关键词：

ethanol;  net energy balance;  corn production;  energy security; 

年份：

1995

出版地：

Washington, DC, USA

总页数：

18 pp

语种：

English

摘要：

Studies conducted since the late 1970's have estimated the net energy value of corn ethanol. However, variations in data and assumptions used among the studies have resulted in a wide range of estimates. This study identifies the factors causing this wide variation and develops a more consistent estimate. We conclude that the net energy value of corn ethanol has become positive in recent years due to technological advances in ethanol conversion and increased efficiency in farm production. We show that corn ethanol is energy efficient as indicated by an energy ratio of 1.24.