The Research On The Ecological Energy-conservation Design Strategy In Cold Climate City High Density District

With expanding population and constantly further developing urbanization,urban construction develops so rapid that a high-density configuration has emerged gradually in urban center.The consumption of energy is increasing enormously everyday throughout the process of urban development,which resulted in resources and energy depletion,global climate change,deterioration of urban environment and weakening of human body function etc.In high-density urban central district,the conflict among urban construction,population and land use is even more outstanding.Especially under the circumstances in cold climates,the high-density urban central district is facing more problems on aspects such as environment,energy consumption,climate and ecology than any other urban districts."Ecology and Energy conservation",which has been consented as the most popular international social consensus nowadays,thus it is very clear that action of urban energy conservation must be imperative.This dissertation studies and researches mainly energy consumption of high-density urbandistrict in cold climates in accordance with the logic "problems exploration-analysis and extraction-research and solution-examples of application".In order to solve problems of energy consumption in high-density urban district in cold climates,this dissertation propounds a series of strategies to improve the ecological environment and reduce the consumption of resources and energy.This dissertation is divided into four parts.The first part is problems exploration(Chapter I,II).First of all,the serious and stressful situations which city development now is facing and high-density as the demand for the future development of city will be detailed analyzed,based on which these chapters abstract the definition,connotation and essential features of high-density urbandistrict.Then the problems aboutenergy consumption and conservation will be discussed from the level of cities,the energy consumption characteristics of high density development will also be analyzed.On the basis of previous researches,these chapters elaborate that the research on the ecological energy conservation of high-density urban district layout is significant,which provides basic data for the study of the following.The second part is analysis and extraction(Chapter III).In this chapter,the complexity of energy consumption in high-density urban district in cold climates will be analyzed and discussed emphatically.What comes to the first is to summarize "seven sins" of energy consumption which based on the analysis of the status of energy consumption in high-density urban district;and then the complex,interactional and mutually restraining relationship among the urban energy consumption,high-density layout and climate will be explored,thereby the core problems of the ecological energy conservation of high-density urban district layout in cold climates will be condensed.Thus,a foundation has been laid for the following researches.The following part is research and solution(Chapter ?,?).According to the analysis of the previous part,a series of strategies which aiming at constructing the system of ecological energy conservation in high-density urban district layout will be proposed.From four key points(Basement,configuration,support and action of ecological energy conservation)has this dissertation put forward that the three levels and eight elements system from the ecological energy conservation of high-density urbandistrict layout.In this part,the weight of cold climates will be assigned,at the same time,it puts forward practical strategies for the construction of ecological energy conservation of high-density urban district layout in cold climates.The last part is examples of application(Chapter ?),in this chapter will the high-density urban layout and the general situation of urban energy conservation be described,besides that the energy saving potential in Tianjin will also be analyzed based on LEAP model;according to the analysis results of which,a high-density urban district will be chosen for researches on optimized strategies for ecological energy conservation layout.