Study On Cavity Design Of Office Building In Cold Region Based On Energy Consumption And Thermal Environment

With a population density of 31,382 people per square kilometer within the first ring road and 19,444 people per square kilometer within the second ring road(the fifth national census),shenyang is one of the cities with the highest population density in the world.The pace of office building construction is accelerating.However,most office buildings do not take into account the special climatic conditions of shenyang.Without considering the results of climate design,the high energy consumption of office buildings in shenyang(average energy consumption of 369 KWH/m2 per year)is worse than the high thermal environment,so it is very necessary to put forward the design strategy of office building cavity space in severe cold areas.This paper discusses the application of the concept of architectural cavity in biology to architecture.The so-called architectural cavity in this paper is a space medium that makes use of the outdoor favorable climate elements and blocks the unfavorable elements.In this paper,the office building cavity in severe cold region is defined as the main research object,the research status is analyzed,the research content and significance are expounded,and the influence of building cavity space on building energy consumption,thermal environment and energy consumption is determined by means of simulation research.Secondly,through the investigation and measurement of typical building cavity in cold region,the characteristics of building cavity space are analyzed,and the evaluation criteria of energy consumption,thermal environment and energy consumption are determined.In this paper,the influence factors of building cavity energy consumption,thermal environment and energy consumption are discussed.Then,variables are set according to the influencing factors of architectural cavity,and different influencing factors are simulated and analyzed,including:orientation of architectural cavity,type of architectural cavity,height of architectural cavity,window-to-wall ratio of external window of architectural cavity,and window-to-wall ratio of roof window of architectural cavity.Finally,summarize and integrate the simulation results,and put forward the design strategy suitable for office buildings in cold regions.Based on the simulation analysis of the factors affecting energy consumption and thermal environment,the design strategy of building cavity in severe cold region is concluded as follows:firstly,the plane layout mode of building cavity is determined,among which the most recommended type is core type and embedded type.Orientation the orientation of the building cavity to the east and north sides is recommended.Then determine the vertical layout of the building cavity,among which the vertical position in the middle of the building and through the most reasonable;Building height 6-9 stories is most reasonable.Then determine the layout of the building cavity interface,in which the top window opening rate of 0.2 is the most reasonable and the optical guide technology is used.When the number of building floors is no more than 9,the larger the window opening rate is,the better;when the number of building floors is less than 9,the gradually decreasing area is more reasonable.Finally,the heat insulation and cold protection methods of building cavity heating season and cooling season are summarized.And put forward the design method of water body and green plant.