Comprehensive Evaluation Research On Hybrid CCHP System

Energy and the environment are the important basis and guarantee for the survival and development of mankind.In today's world,people are paying more and more attention to energy and environmental issues.Vigorously developing the new energy industry has become the consensus of all countries in the world.As an important means of new energy utilization,the hybrid CCHP system has been strongly supported by various countries due to its advantages of high efficiency,energy conservation and environmental protection..A number of demonstration projects have also been put into operation,however,the scientific and correct evaluation of CCHP system is an important link to promote the development of system in a better direction.Therefore,it is very necessary to study the system evaluation in depth.In this paper,a comprehensive evaluation index system is constructed based on the hybrid CCHP system;a systematic comprehensive evaluation method is proposed;a system comprehensive evaluation software is compiled.The main research work in the comprehensive evaluation is as follows:(1)This paper summarizes the current research status of the hybrid CCHP system and the comprehensive evaluation of the system,and expounds the existing problems in the comprehensive evaluation of the system.In view of the characteristics of the hybrid CCHP system and the shortcomings of existing studies,a set of comprehensive evaluation index system with 12 evaluation indexes is constructed,which involves four aspects of the system,namely,economy,energy,environment and reliability.In addition,the specific meaning and calculation method of the evaluation index are explained in detail.(2)On the basis of comparing the commonly used evaluation methods,this paper combines subjective evaluation with objective evaluation to determine the comprehensive weight of each evaluation index.Among them,the subjective evaluation method adopts the analytic hierarchy process,and the objective evaluation method adopts the entropy weight method.Firstly,the subjective weight and objective weight of each evaluation index are obtained;then,the game theory is introduced into the process of comprehensive weighting,and an optimal combination between subjective weight and objective weight is sought through the game to obtain the comprehensive weight of each index;finally,the comprehensive evaluation model of the hybrid CCHP system is constructed.In addition,the feasibility and practicability of the proposed comprehensive evaluation method are verified by a concrete example,and the results of the comprehensive evaluation are analyzed.(3)Based on the proposed comprehensive evaluation index system and method,Lab VIEW is used to develop a set of software for the comprehensive evaluation of the hybrid CCHP system.The functional modules of the software are introduced in detail,and the functional modules of the software are verified by the simulation system.