Net energy analysis

Table 30. Net Energy Analysis of Short-Rotation Wood Biomass Production ...

Location of the system boundaries also is important in the net energy analysis of integrated biomass energy systems. Thus tractors may be used to plant and harvest biomass. The fuel requirements of the tractors are certainly part of E, but is the energy expended in manufacturing the tractors also part of E Some analysts beheve that a complete study should trace all materials of constmction and fossil fuels used back to their original locations in the ground. 

Sarkar, A. and Banerjee, R. Net energy analysis of hydrogen storage options, International Journal of Hydrogen Energy, 30,867-877, 2004. 

TABLE 14.9 Net Energy Analysis of a Hypothetical, 4047-ha, Biomass Production System for Supplying Feedstock to a Centrally Located Conversion Plant ... 

TABLE 14.10 Net Energy Analysis of Integrated Biomass Production of Terrestrial Feedstock and Conversion to Electricity"... 

TABLE 14.13 Net Energy Analysis of Ethanol Manufacture in a Modem Integrated Com Production-Fermentation System with and without Co-product Energy Content Credit ... 

TABLE 14.14 Net Energy Analysis of the Thermochemical Conversion of Natural Gas and Biomass to Ethanol in an Integrated Feedstock Production-Conversion System"... 

From the somewhat limited discussion presented in this chapter on net energy analysis, the value of conducting NBAs for energy- and synfuel-producing systems is apparent. The effort needed to complete detailed NBAs is a time-consuming task, but can provide the basic information needed to select the critical pathway to higher efficiency systems, and to help determine whether the desired results can be achieved. Without the perspective provided by an NBA, the effort to perfect a biomass energy system can easily be misdirected. 

Gately M (2007) The EROI of U.S. offshore energy extraction a net energy analysis of the Gulf of Mexico. Ecol Econ 63 355-364... 

Hall, C. A. S., and Cleveland, C. J. (1981). Petroleum drilling and production in the United States Yield per effort and net energy analysis. Science 211, 576-579. 

Life cycle approaches emerged in the late 1960s and early 1970s from concerns about limited and nonrenewable natural resources, particularly oil. They came initially in the form of global modelling studies and energy audits, and were referred to as Resource and Environmental Profile Analysis and Net Energy Analysis. 

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