Comprehensive Evaluation Of Coupling System Of Natural Gas And Passive Energy In Public Buildings

China has a vast territory.In recent years,the economy has developed rapidly.Public buildings such as office buildings,hospitals and colleges and universities cover all parts of the country and are widely used.The energy revolution characterized by natural gas development is accelerating in various economies around the world.Passive renewable energy is widely used in the world for its clean,efficient and non-polluting properties.In this paper,the energy consumption of public buildings in China is large,the basic data of energy application is lacking,passive energy is not fully utilized,and the coupling technology of natural gas and passive energy supply lacks technical guidance.It is necessary to establish an evaluation index system for energy-coupled systems for public buildings.Public buildings use natural gas and passive energy coupling systems for reasonable evaluation to achieve the goal of improving passive energy utilization and improving coordination and coupling efficiency.In the research of the evaluation system,foreign research is relatively leading,and there are typical evaluation index systems such as British BREEAM,American LEED and Japanese CASBEE.The typical evaluation index system for buildings in China is "Green Building Evaluation Standard" and "Energy-Efficient Building Evaluation Standard".In the process of establishing the evaluation index system,this topic needs to be based on the actual situation in China,and draw on the establishment of evaluation index system at home and abroad to obtain an evaluation index system suitable for this topic.To establish a reasonable and scientific evaluation index system,it is first necessary to conduct research on the main body of the research and the energy object.It is not only to analyze the energy use of several typical buildings in public buildings,but also to build the evaluation index body information to obtain the building type.Indicator screening.Secondly,the main energy forms of the study are analyzed,and the endowment and application of natural gas,solar energy and geothermal energy are analyzed.The basic evaluation indicators for energy coupling can also be obtained.Establishing a scientific and reasonable evaluation index system needs to screen the basic evaluation indicators,determine a reasonable and authoritative expert group,use the Delphi method to conduct expert questionnaire survey,screen out the evaluation indicators at all levels,and establish a coupling index system for public building natural gas and passive energy coupling..After the establishment of the indicator system,it is necessary to analyze the indicators at all levels,determine the significance of each indicator,determine how each indicator is evaluated for the evaluation object,and how to determine the pros and cons of the evaluation subject.After the establishment of the evaluation index system,it is necessary to reflect the different importance levels of the indicators at all levels of the evaluation index system,which is a comprehensive measure of subjective evaluation and objective reflection.For the evaluation index system,the commonly used weight calculation method is the analytic hierarchy process.Aiming at the characteristics of the research of this subject,we use the improved fuzzy fuzzy method-based triangular fuzzy number-analytic hierarchy method to calculate the weights,use the expert weight questionnaire to establish the triangular fuzzy judgment matrix,use yaahp software for calculation,and finally obtain the final data through expert data fusion.The weight of the evaluation indicator system.Finally,it is necessary to carry out data analysis on the weight of the evaluation index system,and analyze the relative importance between the indicators at all levels.In the evaluation,the scientific and reasonable evaluation can be carried out by different weights.The comparative analysis of several building types of public buildings makes the established evaluation index system more scientific and perfect.It provides the basic meaning for the establishment of China’s public building natural gas and passive energy coupled energy system,and contributes to energy conservation,environmental protection and economy of public buildings.