Research On Energy Saving Evaluation System Of Electronic Engineering Based On Grey System Theory

Saving energy,reducing carbon emissions,and achieving "carbon peak and carbon neutrality" as soon as possible are important tasks at present.While our country is concentrating on developing the electronics industry currently,we can not deny that it is also an industry that consumes huge amounts of energy.Therefore,energy conservation in the electronics industry is of great significance.In recent years,specifications for energy-saving design,construction,and acceptance of electronic engineering have been issued,which has a strong guiding role in actual work;but so far there has not been a specification for energy-saving evaluation of electronic engineering,and evaluation is an indispensable step before and after construction.To better evaluate the energy-saving effects of electronic engineering,this research has established a set of applicable energy-saving evaluation systems of electronic engineering and verified it with actual cases in order to provide technical support for promoting the energy-saving and emission reduction of the electronic industry.First,this paper analyzes the current status and existing problems of energy-saving technology and energy-saving evaluation of electronic engineering;then systematically analyzes the influential factors of energy-saving in electronic engineering,and initially draws up evaluation indicators by using the improved Delphi method.Via consulting industry experts on the evaluation indicators mentioned above,we have screened and finally determined the energy-saving evaluation index system for electronic engineering.Furthermore,we continue to conduct a questionnaire for experts to survey the index system,aiming to score the index system,and decide the weight of each part of the index;finally,by using the gray clustering method of the gray system theory and definite weighted functions,we construct a comprehensive evaluation model for energy conservation in electronic engineering.Taking a company’s new vacuum electronics factory project as a case,the model is used to comprehensively evaluate the project to verify the rationality and applicability of the evaluation model.The main results and conclusions of this paper are as follows:After Analyzing the energy-saving impact factors of electronic engineering,we conclude that: there are seven influential factors——architectural design,envelope enclosure energy-saving,process energy-saving,HVAC system energy-saving,power and auxiliary system energy-saving,energy recovery and renewable resource utilization,among which energy saving in the production process is the most important factor of concern.Using the improved Delphi method to investigate expert opinions on the preliminary evaluation index questionnaires,the experts agreed to introduce energy-saving indicators for production processes,and finally formed a four-level evaluation index system,within which there is one main target ——the energy-saving goals of electronic engineering and six dimensions of the principles——process energy-saving,architectural energy-saving,HVAC system energy-saving,power and auxiliary system energy-saving,energy recovery and renewable resource utilization,and "Energy management".Through studying and referring to existing national standards,the evaluation standards and grade standards of the electronic engineering evaluation index system are sorted out and used to determine the realization value of the evaluation index.This study proposes to quantify the qualitative evaluation index in three situations(-1,0,1)corresponding to the evaluation criteria of the evaluation index(unqualified,inapplicable,qualified).According to the analysis and calculation of the weights,the weights of the criterion layer are successively decreasing in order of process energy saving,HVAC system energy saving,power and auxiliary system energy-saving,architectural energy saving,energy recovery and renewable resource utilization,and energy management.In the first-level indicator,the target for energy consumption of production has the highest weight.Via the gray clustering method of the gray system theory and definite weighted functions,this paper constructs a comprehensive evaluation model for energy conservation in electronic engineering.The model has been used to comprehensively evaluate a company’s new vacuum electronics factory project.The evaluation result is excellent.At the same time,the weakness of the project has been found,which is consistent with reality.According to the overall results,it reflects the advantages of this evaluation model,that is,it can not only generally evaluate the whole project but also find out the specific weak points.In summary,the constructed energy-saving evaluation index system and comprehensive evaluation model can not only evaluate the project as a whole,but also identify weaknesses,which will help business owners grasp the true energy-saving status of the project,and provide theoretical support and decision-making basis for subsequent operation and management.