成都地区外墙保温对建筑节能的影响.pdf

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1、全国中文核心期刊钎鬼建巍柑料中国科技核心期刊成都地区外墙保温对建筑节能的影响周练1，李晓虹1，王林2，杨洋1(1，西华大学建筑与土木工程学院，四川成都610039；2．四川海聚环保科技有限责任公司，四川广元628033)摘要：运用DesignBuild。。软件对成都地区某住宅建筑全年累计冷、热负荷进行模拟，研究EPS、XPS、PUR等3种保温隔热材料在不同保温层厚度时，内、外保温方式对建筑冷、热负荷的影响。结果表明：外墙外保温夏季隔热效果优于内保温，冬季内保温效果略好于外保温，热负荷差别不大，总节能效果外保温较好。外墙外保温形式下，保温层厚度增加后，冬季房间舒适度明

2、显提升，夏季舒适度不升反降；且随保温层厚度增加，房间舒适度提升幅度趋于平缓；当保温层厚度达到60mm时，再增加其厚度，总能耗相对节能率增加幅度小于0．3％；说明保温层厚度过大并不能明显提升节能效果，为避免加大建筑投资，应权衡建筑冬、夏季负荷及室内舒适度情况，结合经济性分析，适当选取，以达到较好节能效果。关键词：建筑节能；内保温：外保温；基础室温；DesignBuilder中图分类号：TU761．12文献标识码：A文章编号：1001—702X(2016)05-0091-04Theeffectsof啦rentexteriorwallinsulationformsOHbu

3、蛐ngenergysavinginCbengduZHOULianI,LIXiaohon91，WANGLin2，leANGrang'(t．SchoolofArchitectureandCivilEngineering，XihuaUniversity，Chengdu610039，China；2．SichuanE．A．EnvironmentalTechnologyCo．Ltd．，Guangyuan628033，China)Abstract：UsingthesoftwareDesignBuilder，researchwascarriedoutonthesimulationo

4、ftheannualcoolingandheatingloadofaresidentialbuildinginChengdu，toexploretheeffectsofinternalandexternalinsulationformsabouttheexteriorwallonthecoolingandheatingloadofthebuilding，withdifferentinsulationmaterialsindifferentinsulationthickness．Resultsshow，externalinsulationissuperiortoint

5、ernalinsulationonenergyefficiencyinsummercoolingload，internalinsulationisslightlybetterthanexternalinsulationforenergysavinginwinterheatingload，withlittledifferenceaboutheatingload，andexternalinsulationhasabettereffectthanintemalinsulationaboutthetotalenergysaving．Basedonexternalinsula

6、tionform，withtheincreaseoftheinsu—lationthickness，theloomcomfortlevelinwinterimprovesobviously，andthesummer’Scomfortlevelhasanoppositetrend；Astheinsulationthicknessincreasing．theincreaserateoftheroomcomfortleveltendstobeflat；Whentheinsulationthicknessincreasedto60toni，increasingitsthic

7、kness，theincreaserateofthebuilding'srelativeenergysavingratioislessthanO．3％；Thus，itcan'tincreasetheenergysavingeffectobviouslywheninsulationthicknessistoolarge，andinordertoavoidincreasingthebuilding'sinvestment，weshouldtradeofftheroomcomfortconditionsandtheloadinwinterandsummer，bindi