Study Of Optimisation Of High-rise Office Building Exterior Shading Performance In The Cold Climate Area

The negative effects brought about by global climate change and the waste of resources and energy have profoundly affected the survival and development of mankind,and are a major challenge facing all countries."Clear water and green mountains are golden hills and silver mountains",the conservation and utilization of environmental resources is a major challenge facing the whole world.At present,the world’s largest developed countries think that construction is the key to tackling climate change,this also with the increase of the proportion of building energy consumption of world resources for the construction of larger bring a greater amount of resources consumed,and mainly through the development of building energy saving,resource saving,energy conservation and environmental protection of green building to deal with the temperature rising at the same time to reduce building energy consumption in recent years.In recent years,China’s economy has developed rapidly,high-rise buildings have been built in first-tier and second-tier cities.In recent years,the increasing temperature has caused the increase of air conditioning load in summer.In particular,high-rise office buildings have increased a large amount of building energy consumption,which is the key object of energy conservation.The majority of high-rise office buildings are influenced by the minimalist trend,which seeks the simplicity of building facades and the need for visual functions inside.Large areas of unshaded glass are used for the facades.Due to the lack of sunshade technology,indoor greenhouse effect intensifies in summer,and the quality of thermal environment decreases.Air conditioning costs a lot of energy to cool down,so adding external shading to high-rise office buildings with glass walls can improve the building’s energy efficiency to some extent.At present,the research and application of sunshade design are mainly focused on the southern regions such as hot summer and cold winter,while the research on the cold northern regions is less.On the one hand,it is the reason for the strong sunshine in summer in southern China.On the other hand,it is the reason why glass curtain wall buildings are widely used in southern China.However,with the development of China’s economy and the increasing temperature in recent years,the number of high-rise office buildings with glass curtain wall in northern China is gradually increasing,and the energy consumption is gradually increasing.The problem of energy-saving design of high-rise office buildings with glass curtain wall is also gradually coming into sight.Facing the current situation of high energy consumption of curtain wall glass,shading design is particularly important.The optimization studies of external shading under different climatic conditions are different.For areas with cold climate,it is necessary to consider the influence of summer shading and winter solar radiation as well as indoor lighting energy consumption.Therefore,it is increasingly important to study the external shading of glass curtain wall in cold climate zone.This article USES the energy efficiency software Energyplus explore external blinds type of high-rise office building component structure and external blinds qualitative dimensions,including external blinds type,relative length,spacing affect how high-rise office buildings such as lighting,air conditioning,heating component such as energy consumption and overall energy consumption makes the glass curtain wall building energy efficiency is low,after using some form of shade,in the east,south,west and north four directions qualitative definition structure size,may result in the lowest overall energy consumption of buildings.It is hoped that when designing exterior shading of high-rise office buildings in cold areas in the future,it can provide some reference value for exterior shading design strategies and data of buildings.Firstly,this paper introduces the background,purpose and necessity of the research,and emphasizes the importance of studying the exterior shading design of buildings.Secondly,this paper introduces the research status of shading for high-rise office buildings in China and other regions,including shading methods,the latest types of shading,the trend and practice of high energy efficiency shading.The exterior shading application is good high-rise office building example.Again,the establishment of a universal monomer simulation room,combining with the characteristics of cold climate zone climate and energy consumption of using Energyplus simulation software,the outside shading component qualitative dimensions and towards classification of simulation,it is concluded that a variety of types of shade building size of surface solar radiation heat gain,lighting energy consumption and energy consumption of heating,air conditioning energy consumption and energy saving rate and suitable scope,and the influence of transverse contrast each qualitative size difference of the impact of energy consumption structure.Finally,select a xian a high-rise office building,combined with the construction of existing sunshade measures to transform for optimization design of building shading,and case analysis,contrast after transforming architecture surface solar radiation,energy consumption of lighting,air conditioning refrigeration and heating energy consumption value,analysis and optimization of external blinds achieve better comprehensive energy saving effect,verify the conclusion of research results and discusses the application of the future in the instance.