The Reserch For Building Envelope Energy-saving Of Existing Railway Station In Severe-cold Zone

Building energy-saving is an important part of the sustable development strategy in China. Railyway statiaon,due to its large size,high energy consumption should be considered as one of the most key energy-saving methord of the public buildings.In the severe-cold zone, heating energy consumption is the main part of building energy consumption, and retaining structure heat consumption is accounted for more than40%of the total heat consumption.Therefore, understanding both the building envelope of the Railway station energy consumption situation and characteristics, analysing of the energy saving potential, is a very meaningful work for energy conservation design.This paper takes the raiway station in the severe-cold zone as the research object. According to the features of the climate in severe-cold zone and the energy consumption of the Railway station characteristics, deeply discussed the cold area of railway passenger building palisade structure thermal parameter optimization design.First,the existing railway station building envelope and energy fileds are tested and researched,in order to obtain firest-hand informations,and by calcuating and analyzing focused on building envelope.Then on this basis,the modle of raiway station in serve-cold zone was established by energyplus software. The wall heat transfer coefficient, the wall heat preservation form and window to wall ratio to the influence of wall in building energy consumption. To get the suitable wall heat transfer coefficient,external wall thermal insulation materials and best economic thickness for railway station in serve-cold zone, analyzed the influence of window to wall ratio of energy consumption is calculated, and the optimization measures of railway station after energy saving effect.The econmic evaluation model of building envelope model of was built,using this modle to evaluated the optimization scheme of JiaYuGuan railway station.