TY - JOUR
T1 - A data envelopment analysis for energy efficiency of coal-fired power units in China
AU - Song, Chenxi
AU - Li, Mingjia
AU - Zhang, Fan
AU - He, Ya Ling
AU - Tao, Wen Quan
N1 - Publisher Copyright:
© 2015 Elsevier Ltd
PY - 2015/9/15
Y1 - 2015/9/15
N2 - In this article, the non-parametric data envelopment analysis method (DEA) is employed to evaluate energy efficiency (EE) of 34 coal-fired power units in China. Input-oriented CCR (Charnes, Cooper and Rhodes) model is used for EE analysis. Two efficiency indices, generalized EE and special EE are defined and analyzed. The generalized EE is calculated based on four input parameters: coal consumption, oil consumption, water consumption and auxiliary power consumption by power units. The special EE is only based on two input parameters: coal consumption and auxiliary power consumption. Relations between these two EE indices and non-comparable factors including quality of coal, load factor, capacity factor, parameters of main steam and cooling method are studied. Comparison between EE evaluation results of the two indices is conducted. Results show that these two kinds of EE are more sensitive to the load factor than the capacity factor. The influence of the cooling method on EE is larger than that of main steam parameter. The influence of non-comparable factors on the special EE is stronger than that on the generalized EE.
AB - In this article, the non-parametric data envelopment analysis method (DEA) is employed to evaluate energy efficiency (EE) of 34 coal-fired power units in China. Input-oriented CCR (Charnes, Cooper and Rhodes) model is used for EE analysis. Two efficiency indices, generalized EE and special EE are defined and analyzed. The generalized EE is calculated based on four input parameters: coal consumption, oil consumption, water consumption and auxiliary power consumption by power units. The special EE is only based on two input parameters: coal consumption and auxiliary power consumption. Relations between these two EE indices and non-comparable factors including quality of coal, load factor, capacity factor, parameters of main steam and cooling method are studied. Comparison between EE evaluation results of the two indices is conducted. Results show that these two kinds of EE are more sensitive to the load factor than the capacity factor. The influence of the cooling method on EE is larger than that of main steam parameter. The influence of non-comparable factors on the special EE is stronger than that on the generalized EE.
KW - Coal-fired power unit
KW - Data envelopment analysis (DEA)
KW - Energy efficiency (EE)
UR - http://www.scopus.com/inward/record.url?scp=84922775024&partnerID=8YFLogxK
U2 - 10.1016/j.enconman.2014.12.062
DO - 10.1016/j.enconman.2014.12.062
M3 - Article
AN - SCOPUS:84922775024
SN - 0196-8904
VL - 102
SP - 121
EP - 130
JO - Energy Conversion and Management
JF - Energy Conversion and Management
ER -
