Energy efficiency assessment method for high-energy-consumption enterprises

Abstract

The present invention relates to an energy efficiency evaluation method for high energy-consuming enterprises, comprising the following steps: S1) collecting data and establishing an energy efficiency evaluation index system, which includes a plurality of first-level indicators, and each first-level indicator includes a plurality of second-level indicators. Each second-level index is normalized; S2) Based on the energy efficiency evaluation index system, determine the factor domain and comment level domain of the first-level index and the second-level index in turn, and determine the weight set of the first-level index and the second-level index , obtain a comprehensive evaluation matrix, and establish a mathematical model of multi-level fuzzy comprehensive evaluation; S3) use the mathematical model of multi-level fuzzy comprehensive evaluation to complete the energy efficiency evaluation of high energy-consuming enterprises, and analyze the results. The present invention retains all the information of evaluation indicators at all levels, and through multi-level evaluation and subjective and objective comprehensive weighting, it effectively overcomes the industry limitations of a single evaluation method and the subjective randomness of traditional fuzzy comprehensive evaluation, and the calculation method is scientific, Fast, high reliability, strong engineering practicality and application promotion value.

Description

technical field [0001] The invention relates to the field of energy efficiency and evaluation, and more specifically relates to an energy efficiency evaluation method for high energy-consuming enterprises. Background technique [0002] As far as the applicant knows, my country's total energy consumption in 2012 was about 3.62 billion tons of standard coal, ranking first in the world for three consecutive years. my country's dependence on foreign energy is increasing year by year, and the contradiction between energy supply and demand continues to expand. In my country's total energy consumption, high-energy-consuming industries such as iron and steel, cement, nonferrous metals, and power generation account for about 30% of the country's total energy consumption and about 45% of the total energy consumption of industrial enterprises. Therefore, improving the energy efficiency level of high energy-consuming enterprises is a necessary means to achieve energy conservation and e...

AI Technical Summary

Problems solved by technology

[0004] According to the novelty search report and related technical materials obtained by the applicant, the current research on enterprise energy efficiency evaluation can be divided into two categories. Industry-specific production technologies are closely related and cannot be extended to typical high-energy-consuming enterprises; one is to introduce analytic hierarchy process, fuzzy comprehensive evaluation method, gray correlation degree method, etc. into energy efficiency evaluation, but the method is relatively single and has great limitations

The consistency test of the judgment matrix of the AHP is more complicated, the amount of calculation is large, and the evaluation process has a certain degree of subjective judgment; the index weight of the fuzzy comprehensive evaluation and the single-factor fuzzy relationship matrix are difficult to obtain, and the membership function does not Uniform standards, the evaluation process is relatively cumbersome; the quantitative model of the gray relational degree method cannot fully reflect the relationship between objects, and the scope of use is relatively narrow

However, so far, there has been no comprehensive energy efficiency evaluation system that can be applied to various high-energy-consuming industries, and the evaluation method is highly comprehensive, combining subjective and objective aspects, and no relevant research results have been published.

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