Thermal Environment Analysis Of Typical Urban Street Form And Its Influence On Building Energy Consumption

With the continuous development and expansion of the city,the texture and morphology of the city are constantly changing,and the microclimate environment inside the city has also changed significantly.For the people living in the city,the impact of this micro environment change on human thermal comfort and building energy consumption is the focus of this paper.In this paper,the thermal environment and thermal comfort of urban outdoor streets are evaluated by means of microclimate simulation,and the relationship between the characteristics of street morphology and thermal environment evaluation indexes is studied.Through the coupling simulation of microclimate and energy consumption software,the microclimate parameters of the block are finely evaluated,and the microclimate parameters are taken as the boundary conditions of building energy consumption simulation.On the one hand,the changes of building energy consumption before and after the coupling are compared,on the other hand,the relationship between block morphology and building energy consumption is explored.In this paper,the form and model of streets and blocks are investigated,and six classic urban street models and Nanjing residential block models are selected as the simulation cases.Furthermore,the paper summarizes the different morphological indexes of streets and blocks,which paves the way for the introduction of "street extraction method" and "street slicing method".The microclimate,especially the thermal environment and thermal comfort were reviewed in order to lay a good foundation for the later evaluation indexes of thermal environment and thermal comfort.A lot of literature research work has also been done on the relationship between building energy consumption and architectural design and street form,which helps the research focus and highlights of this paper.On the coupling platform,the work steps and mechanism of ENVI-met and Energy Plus software are introduced,and their research status and experimental verification are summarized respectively.The coupling mechanism of the two simulation platforms is mainly explained and explained.Based on six classic urban street models,ENVI-met is used to simulate the thermal environment and thermal comfort of different streets at 12:00 and 21:00.Through the research on the correlation between simulation results and street morphological indicators,the guiding opinions on architectural design and street planning are obtained.The "street extraction method" is innovatively put forward to quantify different street models,and to describe different characteristics of streets with morphological values.Comparing the similarities and differences between "street extraction method" and "street slicing method",it is concluded that "street extraction method" is more suitable for the morphological quantification of the whole street area,and "street slicing method" is more suitable for the morphological quantification of the central main street area.In addition to the correlation analysis of thermal environment and thermal comfort simulation results with morphological indicators,the simulation results of the main street centerline are also correlated with morphological indicators.It is found that SVF and street opening are highly correlated with the simulation value.Based on the typical residential block model in Nanjing,the microclimate around the target buildings of different block models is simulated by ENVI-met.As mentioned above,the microclimate results are correlated with the block quantitative indicators firstly.Taking the microclimate simulation results as the boundary conditions of energy consumption simulation,this paper explores the differences of building energy consumption in different block forms.The energy consumption distribution of different buildings in the same model is explained.On the premise that the difference in energy consumption distribution can be ignored,the central target building is selected to represent the building energy consumption of this model.This paper analyzes the difference of building energy consumption of different model targets and the correlation with the model shape.The difference of building energy consumption before and after the coupling of the same model is analyzed,and the correlation between hourly load and meteorological parameters and microclimate parameters is analyzed.Based on the quantitative research of street morphology,the innovation of this paper is to associate the quantitative index of street morphology with the result of microclimate simulation,which realizes the description of complex real morphology from qualitative to quantitative.In this paper,the impact of microclimate results on building energy consumption is the focus of this paper.The coupling simulation of ENVI-met and Energy Plus is realized.The microclimate and building energy consumption are considered simultaneously to guide block planning.The whole thesis contains about 57181 words,94 pictures and chart...