Residential Building Eenergy Efficiency Assessment And Labeling

With Chinese economy goes up stabely, the building energy consumption has been increasing in the past twenty years. Solid energy sources consumption not only aggravate energy crisis, but also cause environmental pollution. The current urgent issue is the low building energy efficiency and the relative uncomfortable indoor environment in Chinese building energy consumption. Building energy efficiency assessment and labeling is one of the most important measures to improve building energy efficiency. However, there are deficiencies in the building energy efficiency assessment and labeling research field. Firstly, there is not a commonly accepted building energy efficiency assessment weighted indicators list. Secondly, there is not a convincing building energy efficiency assessment model, the focus of recent research has been on building enery consumption simulation. Thirdly, although it is inevitable that building energy efficiency assessment cover uncertain and incomplete information of subjective judgement, as the best knowledge of us, we do not find research literature review to deal with the uncertain or incomplete information judgement in building energy efficiency assessment.To tackle the above deficiencies in building energy efficiency assessment and labeling, this thesis investigates the building energy assessment and labeling in the following seven chapters.Chapter one indicates the background of energy shortage and the environmental impacts of energy consumption briefly. A comparative analysis has been implemented among the main three popular building energy efficiency assessment methods: rating method, life cycle assessment, energy consumption calculation or simulation. As a result, we find out some weakness of the above methods. In addition, we summarize the current situation of Chinese building energy efficiency assessment and labeling briefly. Chapter two proposes a method to identify building energy efficiency assessment indicators. Three main indicator sources of the method are: 1) The literature review of building energy efficiency assessment; 2) International building energy efficiency and built environmental assessment methods; 3) The current Chinese building energy conservation technology standards and codes. A draft residential building energy efficiency assessment indicators list is selected by the three main rules as value availability rule, systematic rule, effectiveness rule and multiple attribute decision-making (MADM) rule. A survey has been carried out to refine the draft indictor list. Finnaly, a final residential building energy efficiency assessment indicators list in hot summer cold winter is achievedIn chapter three, the group Analytic Hierarchy Process Weighting Model is used to weight the residential building energy assessment indicators through a comparative analysis of existing weighting commonly used methods. A survey has been carried out to weight these identified indicators. The consistency of the survey in group Analytic Hierarchy Process Weighting Model is satisfactory by consistency analysis. It is safe to say that the weights of the indicators are accepted and reliable, the number of experts involved in the survey is enough as well.In chapter four, we propose a building energy assessment and labeling model based on the theory of evidence and the national and local building conservation standards. A method has been achieved by applying the model in residential building energy efficiency assessment in hot summer and cold winter area. The proposed method consists of two main stages. The first stage mainly cover compulsive items check required by Design Standard for Energy Efficiency of Residential Buildings in Hot Summer and Cold Winter Zone JGJ 134-2001; The second stage is to label the energy efficiency of buildings that succeed in stage one. The labeling model is based on the Dempter Shafer (DS)thery and the Evidential Reasoning Approach (ER). The building energy efficency labeling method maily consists two steps. Firstly, belief is assigned to each assessment grades in term of the belief assignment rule on each indicator. Secondly, ER approach is employed to combine each belief assignment to the final belief assignment.The proposed model and method combine with the current buiding energy conservation standards, furthermore, they can deal with the uncertain and incomplete information in building energy efficiency assessment. The proposed model and method enjoy the virtues of mature mathematics theory and good practical implementation.In chapter five, a computer software toolkit of residential building energy assessememt and labeling method is developed. Delphi is used as the development tool. The process of software development follows the software engineering theory and guidances. The residential building energy efficiency assessment and labeling software in hot summer and cold winter vision 1.0 is the achievement.In chapter six, as the demostration and validation of the proposed method and software developed, a residential building in Chongqing is assessed and labeled using the method proposed in chapter four and the software toolkit developed in chapter five. Meanwhile, the same building is assessed using the'evaluation standard for energy efficient building'. The assessment result of two methods is general consistent .The case study show that the proposed method is feasible and the software toolkit works stably.