Study On The Influence Of Building Shape Coefficient On Energy Consumption In Hot Summer And Cold Winter Area

With the continuous maturity of the construction industry technology,people have higher and higher requirements on architecture,innovative development,green building and other new terms;Conservation of resources,protection of the environment,promotion of sustainable development and other concepts have also been developed into the building industry,from which green building comes.The green building referred to by people means to provide comfortable,healthy and efficient living space for people to realize the coordination between buildings and nature and to adapt to nature by means of protecting the environment and reducing pollution,maximizing the efficiency of resource utilization within the service life of buildings.By changing the material on the surface of the building can realize the pursuit of green building,also can use the method of enhancing building wall material to make buildings to achieve energy saving effect,of course,to consider changing the building’s body structure,through a large number of studies have been done to change the building shape coefficient,to determine the most advantageous building shape coefficient,thus to improve the effect of building energy efficiency,the building with hvac also can yet be regarded as a kind of innovation thought is an organic whole,among them,the prefabricated building shape coefficient of the performance of design research is a combination between the two.In the final analysis,green building is a concept of pursuing low energy consumption,saving construction land,saving construction water resources,saving construction materials and protecting the environment,and it also follows the principle of local conditions.When the method of realizing the low energy consumption of building materials by changing the building materials has reached the maximum approximate value of the current energy saving of building materials,we have to consider changing the building structure itself to realize the building energy saving.The concept of building energy efficiency,known as the "improve energy efficiency in buildings",was originally appeared in the developed countries,the purpose of the first is to reduce the loss of effective energy in buildings,in order to ensure to improve construction efficiency and comfort,effective and reasonable use of building itself have surplus energy,to maximize energy use efficiency.From the beginning of the feasibility study program of a project to the completion of the project,under the condition of the national building energy efficiency standard,the building is efficient in energy efficiency through the selection of energy-saving building materials,equipment and products;In terms of operation and management,to strengthen the effective use of building energy saving equipment,in the aspect of building structure design,determine a reasonable thermal performance,through to make full use of renewable energy,optimize the operational efficiency of each system,to implement the building energy consumption is reduced,finally realizes the real building energy efficiency.To realize building energy conservation,we should start from inside and guarantee from outside."Inner" refers to the quality and thermal performance of the building itself."Exterior"refers to the nature of building use,the choice of clean energy,and the utilization of energy.Overall,comprehensive building energy conservation is a systematic project,which should be effectively based on national regulations and policies,as well as relevant policies formulated by local governments.At the same time,all departments should strictly follow the national policies and standards on energy conservation and comprehensively implement and implement all measures,so that every citizen can truly set up a comprehensive view on building energy conservation and put the building energy conservation into practice.Assembly building is a manifestation of building energy conservation.In this paper,the cold and hot bridge effect of assembly building structure was first analyzed,and fluent was used to preliminarily judge the quantitative relationship between different building types(same area and different types)and indoor temperature field.Therefore,the influence of assembly building coefficient on building energy consumption in hot summer and cold winter areas is studied.Secondly,through the comparative analysis of current mainstream energy consumption simulation software,energyplus software and DesignBuilder software were determined to simulate the relationship between the parameters of assembly building design and energy consumption.Combined with the characteristics of the software,climate parameters represented by hefei were collected to determine the boundary conditions and simulation methods of energy consumption model.And then,using energyplus software respectively to the cube,six side body,cylinder,cone and frustum of a cone,cube and cylinder combination of prefabricated construction model,on the basis of the simulation,thus building shape coefficient is derived and the general relationship between building energy consumption,after reuse DesignBuilder software respectively for the rectangle,square,L,H shape and U shape building models such as building energy consumption simulation.After the results are obtained,the regression fitting method is used to analyze the simulation conclusion,and the correlation between the building shape coefficient and building energy consumption is obtained.Finally,through the analysis of all energy consumption simulation data,the value of the most energy-saving design parameters in the shape coefficient of the assembly building is obtained.