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This paper proposes a total-factor energy consumption performance index (TEPI) for measuring China's energy efficiency across 30 provinces during the period 1997 to 2012. The TEPI is derived by solving an improved non-radial data envelopment analysis (DEA) model, which is based on an energy distance function. The production possibility set is constructed by combining the super-efficiency and sequential...
This paper introduces an improved total-factor ESTR (energy-saving target ratio) index, which combines the sequence technique and the “energy direction” to a DEA (data envelopment analysis) model, in order to measure the possible energy saving potential of a manufacturing sector. Afterward, the energy saving potentials of four different energy carriers, namely coal, gasoline, diesel oil and electricity,...
Enacting a reduction target for energy intensity in provinces has become an important issue for the central and local governments in China. But the energy intensity index has provided little information about energy efficiency improvement potential. This study re-estimates the TFEE (total-factor energy efficiency) using an improved DEA (data envelopment analysis) model, which combines the super-efficiency...
It is indispensable for strengthening smelting process and controlling fine to understand metallurgical behaviors and mechanism of production process of aluminum holding furnaces. A CFD (computational fluid dynamics) compressive process model was developed and integrated with energy distribution regime using user subroutines based on FLUENT code. Integrated intelligence ideas with a combination of...
Adjusting industrial structural is crucial for Chinese government's effort to reduce energy intensity. This paper, based on the fact that the Chinese industrial structure's two V-pattern evolutions and the nonlinear fluctuation of the declining rate of energy intensity, specifies a nonlinear threshold cointegration model for EI (energy intensity), IS (industrial structure), TECH (technological progress),...
In this study, experiments were conducted on a single-cylinder high speed SI (spark ignition) engine fueled with 30 and 35%vol butanol/gasoline blends and compared to the pure gasoline. This research is trying to find out the common principles about the influence on combustion heat release of SI engine for variables such as ignition timing, engine load, and butanol blend ratio in a wide engine speed...
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