The Thermal Performance And Thermal Bridge Research On Integration Of Exterior Wall Thermal Insulation Decoration System In Hot-summer And Cold-winter Zone

Compared with other developed countries of similar climate,the building energyconsumption in our country is higher.Statistics show that about50%of the energyconsumption in buildings is caused by unreasonable palisade structure setting andusing. We know that the outer wall area accounted for the largest proportion of theretaining structure,so the energy loss from outer wall is high.Therefore, outer wallheat preservation is an important way to realize energy efficiency in buildings. Atpresent there are many kinds of exterior wall thermal insulation practices. In terms ofhot summer and cold winter area, with the requirements of heat insulation in summerand heat preservation in winter and energy saving target of65%, the requirements ofthe wall thermal insulation system is high.The thermal insulation decoration systemhas great advantages in this respect.Therefore, in this paper, we mainly study aboutthe external wall thermal insulation heat preservation decoration integrated thermalperformance of the system and the influence of thermal bridge on the system heattransfer.This paper is divided into the following several parts to Study and analysis:First of all, this paper describes the heat preservation decoration plate in themarket at present, especially on the performance of aluminum alloy polyurethaneintegration of exterior wall thermal insulation decoration plate and its constructionscheme and the advantage of Integration system in the construction quality,construction period and comprehensive cost.The third chapter mainly introduced the third chapter mainly introduced thetypical structure of dry hanging system on thermal insulation decoration system andthermal insulation decoration independent system; Then analyzed several typical dryhanging wall heat transfer performance from the perspective of the theoreticalcalculation. The results show that the heat transfer coefficient of the integrationsystem is small, compared with dry hanging stone, color steel plate heat preservationeffect is good.The fourth chapter mainly introduced the definition and harm of the thermalbridge; Expansion bolt in the integrated system and the width of50mm compositekeel effect the heat transfer of the system have been calculated in detail. Thenanalyzes the different specifications of the composite structure and metal keelinfluence on heat transfer coefficient, and puts forward Suggestions on the selectionof keel size in practical engineering. The fifth chapter mainly introduced the test equipment, test methods and sitelocation method on the integrated system of heat transfer coefficient;We measure onthree different structural system of heat flux and temperature,and process the data ofthe coldest month and the hottest month.From the data processing we can obtainedwhich kind of system heat preservation effect is good.Chapter6using fluent software to simulate the temperature distribution of thermalinsulation decoration system which has the keel or has air layer between winter andsummer, then analysis the two kinds of working condition of the influence of differentheat preservation effect of the system.