Research On Decision And Analysis Approach To Energy Consumption Of Building Sector And Its Application In Beijing

Building energy consumption data analysis methods and energy control strategies are thefocus of this study. Building energy consumption data analysis can help us to grasp theactual situation of Building energy consumption, analyse the features of building energy,investigate the basic causes of building energy consumption changes, and finally find thepotential of building energy efficiency. Study of energy consumption control strategy isconducive to the building reforming plan of energy saving and the determination of thefocus or the direction of building city or zone, which then can achieve the scientificdecision of building energy management. This research can also provide strong support forthe development of the relevant policies and regulations, which means the importanttheoretical significance and application worth. The following achievements have beenaccomplished in this paper.(1) The scientific classification of building and building energy consumption has beenoffered, and the regional building energy model based on statistical data has also been built.This classification can change the study of building energy consumption into the analysis ofthe distribution rules with different building types and their corresponding building areas.Based on the different study objects, building energy analysis can be divided into threelevels. First, it is the research of single building energy consumption, which can givesupport for the evaluation of the energy-saving operation and the choice of the specificenergy reforming methods. Second is the energy analysis of same kind of buildings. Thecharacteristics and the basic laws of a certain type of building energy consumption can bestudied, which can be used to assess the effect of energy management and the operationperformance of buildings with different types. Third, it is the statistical analyses of thebuilding energy data on the level of zones, which can determine the focus of buildingenergy policy and give strong support to the formulation of the related laws and rules.Based on the existing database of Beijing city, the building energy of Beijing has beenstudied by the regional building energy model, and then come to the conclusion that civilbuilding energy consumption of Beijing town in2009is about19.17million tons ofstandard coal.(2) The improvement method of building energy statistics is proposed. For the present,many factors such as the different boundary definition, the different energy conversionmethods, the different energy measurement methods or instruments, and the professional background for the Statisticians with different training levels, will affect the quality of thestatistical data, then can cause the data distortion. First, the pretreatment method beforeanalysis can effectively reduce the data distortion. After that the data analysis and thecalculation results can be more accurate with the improvement of the statistical system andstandards, the data analysis method, and the appropriate increasement of the sample number.Besides the choice of the values of the local energy conversion coefficients can also getdifferent cacluation results, which can even have the important role on the direction for thegovernment policy and the comprehensive utilization of energy.(3) Based on the analysis on the technology of building energy and energy data, buildingenergy control determination model is built, which is used to do the analysis of the differentbuilding energy schemes for Beijing. On the basis of a great quantity of investigation andtest analysis, the technology of building energy saving is evaluated objectively. Most of theinfluential factors for building energy, includding the economic development, populationchange, construction area of growth, comfort requirements, electrical equipment and others,will be analysed synthetically. The feasibility and economy of the frequently-used energycontrol methods, such as the energy-saving reforming methods of building envelope, theenergy saving technology of heating system and renewable energy system, the metering ofbuilding energy, the people behavior of energy saving, etc., will also be discussed. Thestudied results show that the comprehensive transformation of the old and non-energysaving buildings have very large influence on the building energy consumption of Beijing.The low-cost transformation of commercial building, the technical level of gas, coal-firedheating system have to be the key point for the management work of energy saving.(4) A comprehensive study of Beijing building energy management system and operationmechanism will be finished with the discussion about many kinds of factors which includethe advantages and disadvantages of the existing system, the study of the formulation aboutregulations and standards, the policy incentives, the energy saving assessment methods, andthe framework of supervision and management. Several key problems of the whole frameand guidance of the work for building energy saving will be resolved consequently.