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Mohammad Vaferi, Kayvan Pazouki and Arjen Van Klink
This article proposes an analytical model for a conversion from Heavy Fuel Oil (HFO) to Liquide Natural Gas(LNG) dual-fuel engine in a fleet with three sizes of vessels in order to investigate the impact of the volatility of oil prices, and a declining E...
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Bo Xu, Lianyong Feng, William X. Wei, Yan Hu and Jianliang Wang
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Michael Aucott and Charles Hall
We examined data on fuel consumption and costs for the years 1950 through 2013, along with economic and population data, to determine the percent of U.S. gross domestic product (GDP) spent each year on fuels, including fossil fuels and nuclear ore, and t...
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Mads V. Markussen and Hanne Østergård
Modern food production depends on limited natural resources for providing energy and fertilisers. We assess the fossil fuel dependency for the Danish food production system by means of Food Energy Returned on fossil Energy Invested (Food-EROI) and by the...
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Alexandre Poisson and Charles A. S. Hall
Modern economies are dependent on fossil energy, yet as conventional resources are depleted, an increasing fraction of that energy is coming from unconventional resources such as tar sands. These resources usually require more energy for extraction and u...
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Abbe Hamilton, Stephen B. Balogh, Adrienna Maxwell and Charles A. S. Hall
We examine technological progress in the US and Canada to answer the question: has the efficiency (e.g., the edible energy efficiency, or EEE) for producing agricultural products in the US and Canada increased in recent decades? Specifically, we determin...
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Ajay K. Gupta and Charles A.S. Hall
This is a review of the literature available on data for the EROI (prior to this special issue) of the following 12 sources of fuel/energy: oil and natural gas, coal, tar sands, shale oil, nuclear, wind, solar, hydropower, geothermal, wave/tidal and corn...
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David J. Murphy, Charles A.S. Hall, Michael Dale and Cutler Cleveland
The main objective of this manuscript is to provide a formal methodology, structure, and nomenclature for EROI analysis that is both consistent, so that all EROI numbers across various processes can be compared, and also flexible, so that changes or addi...
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Charles A.S. Hall
Energy Return on Investment (EROI) refers to how much energy is returned from one unit of energy invested in an energy-producing activity. It is a critical parameter for understanding and ranking different fuels. There were a number of studies on EROI th...
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Megan C. Guilford, Charles A.S. Hall, Peter O?Connor and Cutler J. Cleveland
Oil and gas are the main sources of energy in the United States. Part of their appeal is the high Energy Return on Energy Investment (EROI) when procuring them. We assessed data from the United States Bureau of the Census of Mineral Industries, the Energ...
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