The Influence Of Urban Block Layout On Building Energy Consumption In Hot Summer And Cold Winter Area

Energy crisis and environmental problems have been one of the major threats facing mankind today,and are also a key concern for social development in China.Among them,building energy consumption accounts for about 30% of human terminal energy consumption,and the total amount is gradually increasing.It is an important way to achieve energy saving and emission reduction,and the "13th Five-Year Plan" for the development of building energy saving and green building proposes to promote the construction of green ecological urban areas(neighborhoods and settlements).In this context,in the last three to five years,research on building energy efficiency has evolved from single buildings to larger scales such as neighborhoods,from the assessment of thermal efficiency of single buildings to the optimization of energy efficiency in the early design of building groups.The research is devoted to the preliminary planning and design of urban neighborhoods with appropriate recommendations for building layout from the perspective of green energy efficiency.This requires an analysis of the impact of early design behavior on energy consumption for the specific climatic conditions in China.Therefore,this paper studies the impact of neighborhood spatial form on the energy consumption of neighborhood building groups in hot summer and cold winter regions as the topicThe research of this thesis can be divided into three parts.(1)Building an energy consumption calculation model based on Rhinoceros modeling,Ladybug and Honeybee as the platform to call Energy Plus energy consumption calculation kernel,to realize more accurate and easy batch building energy consumption calculation.(2)Taking three types of neighborhoods in Wuhan city,such as residential,office and commercial,in the hot summer and cold winter regions,30 neighborhoods were selected to collect relevant data,build a model,conduct energy consumption simulation,determine the distribution characteristics of energy consumption in different types of neighborhoods,and quantify the influence of morphological parameters on different types of neighborhoods through statistical methods such as regression.(3)Based on the analysis of the impact of each morphological parameter on the energy consumption of the neighborhoods,recommendations for energysaving perspectives on the building layout and morphology of new neighborhoods were proposed through scenario interpretation,with a view to providing a reference basis for the future planning and design of high-intensity energy conservation and emission reduction.The analysis results show that for Wuhan in hot-summer and cold-winter regions,building energy consumption in public building blocks such as commercial offices are more influenced by morphological elements,while residential blocks are less influenced by morphological elements.Considering the energy saving potential purely from the perspective of early design intervention,the energy saving potential of public blocks such as commercial offices is a little higher.Reducing the building form factor reduces the heating and cooling energy consumption,which ultimately leads to a reduction in total energy consumption,with no effect on lighting energy consumption.As the building density increases,the energy consumption also increases.The main impact is on lighting energy consumption,and the overall relationship shows a quadratic regression.When the building density is higher than 0.25,the impact increases steeply.