Abstract
Aiming at the comprehensive evaluation of energy efficiency for large industrial customers, an energy efficiency perception evaluation model based on the gray correlation degree and entropy weight method is proposed in this paper. Firstly, in order to perceive the dynamic energy efficiency of large industrial customers, an energy efficiency measurement model based on the gray correlation degree is established and the weight of energy efficiency evaluation index is determined by entropy weight method. By calculating the correlation between the original value and the optimal value of indexes, energy efficiency measurement results at different time points are obtained. Then, based on energy efficiency measurement results, energy efficiency evaluation results are calculated to determine the customer’s energy efficiency level. Finally, through the case study of a steel plant, the energy efficiency measurement and comprehensive evaluation of four key production links are analyzed, and it is found that the energy efficiency of sintering process 2 has room for improvement.
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