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为对比研究建筑应用热反射涂料屋面和种植屋面的室内空调能耗水平,选取厦门市同安区某宿舍楼内三个户型和面积一致、围护结构材料相同且同一朝向的顶层相邻房间作为测试平台进行现场测试,测试结果表明:夏季空调24小时运行工况下,热反射涂料屋面和种植屋面房间日均耗电量分别比普通涂料屋面房间少0. 037 k W·h/m~2、0. 036 k W·h/m~2;夏季空调夜间运行工况下,热反射涂料屋面和种植屋面房间日均耗电量分别比普通涂料屋面房间少0. 056 k W·h/m~2、0. 097 k W·h/m~2。热反射涂料屋面和种植屋面均可减少室内空调耗电量,具有一定的节能效果,种植屋面房间在夜间节能效果更明显。 相似文献
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随着我国节能建筑的推广和城市中屋面“平改坡”热潮的掀起,我国城市绿地规划建设的不足和缺陷也逐渐暴露出来,原有的绿地已经远远不能适应社会发展的需求。因此种植屋面所具有的节能、节水、节地以及改善城市环境和减少城市热岛效应的优点,成为建筑节能环保的最佳选择。文中就种植屋面的节能环保以及屋面日光种植温室和JKSW架空式生态屋面绿化系统进行了初步的理论探索。 相似文献
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某住宅楼保温种植屋面改造设计及实测数据分析 总被引:2,自引:0,他引:2
以不采暖住宅楼保温种植屋面设计改造工程为例,论述了其构造层次的可行性。通过计算该屋面构造方案的总热阻值及传热系数等,确定该方案满足国家现行规范要求的节能标准。分析对比了该种植屋面改造前后冬季最冷月四天的室内外实测数据,验证了保温种植屋面改造方案的保温效果。 相似文献
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建筑工程是高投入、高能耗、高排放的粗放型行业,对我国实现国民经济的长期可持续发展已构成重大挑战.屋面节能工程是建筑节能分部的一个重要分项,仅从建筑节能的角度,认真概括和总结了各种类型建筑屋面节能的优点和存在的不足,并通过分析对比,认为采用土壤,种植(绿色)保温隔热屋面,对屋面节能的效果比较明显,应予推广应用. 相似文献
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浅谈生态建筑屋面与建筑节能 总被引:1,自引:0,他引:1
针对建筑节能的重要性,通过对种植屋面、太阳能屋面以及屋顶的自然通风节能设计进行综合论述,并结合我国建筑物屋顶的节能现状,提出了一些方法和措施,从而更好地促进生态建筑屋面与建筑节能的发展。 相似文献
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深圳地区既有建筑屋顶的绿色节能改造研究 总被引:1,自引:0,他引:1
为响应建筑节能需要,深圳已出台新政策,将逐步推行屋顶绿化,并鼓励既有建筑实行屋顶绿化改造。该文从屋顶防水技术、种植技术、种植植物与屋顶介质选择等方面对既有建筑的屋顶改造技术提出了一些新设想。 相似文献
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本文通过实测普通防水屋面与几类种植屋面的全天温度与热流变化情况,分析了种植屋面隔热性能的优劣,并总结出种植密度对屋顶热工性能的影响。 相似文献
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屋面的隔热性能对顶层住户夏季室内热环境影响很大,因此对几种常用屋面的实际隔热效果进行测试研究,具有实用价值。选择长沙市区某住宅小区两栋相邻的住宅,在2013年夏季按住宅屋面常用构造做法设置了几种实验模块,在外界条件、层高、墙体等都相同的情况下,连续测试各模块屋面的内表面温度、室内空气温度、室外空气温度并进行对比分析。结果表明:种植屋面的隔热效果最好;无隔热措施传统屋面的隔热效果较差,增设保温层后,其隔热效果有一定提高,如果外表面再刷白,隔热性能明显改善;通风屋面有一定的隔热效果,加设保温层后效果更好。 相似文献
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A passive means of lowering the energy demand of buildings is the application of green roofs. The complexity between heat and moisture exchanges in green roof layers and the large variations of green roof types make the need for experimental or simulation assessments necessary for quantifying the energy benefits from green roofs. The current treatment of green roofs in simulation programs is either over-simplistic, for example by ignoring heat and moisture exchanges such as evapotranspiration, or the more advanced models have limitations and require inputs that are rarely available in practice. In this paper a combination of experimental and modelling techniques are used to assess the potential heating and cooling load reductions from the application of green roofs in the subtropical climate of Ningbo in China. The method provides a generalised energy performance assessment of green roofs in Ningbo by overcoming the limitations of existing green roof simulation models. 相似文献
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Green roofs have been increasingly installed to alleviate some common environmental problems. The thermal benefit of living vegetation on rooftop has been extensively studied. The individual and joint contribution of the non-living green roof layers, namely soil, rockwool (water storage) and plastic drainage layers, to thermal performance of green roof has seldom been assessed. This study evaluates the insulating and cooling effects of these abiotic materials. A one-dimensional theoretical model was developed to assess the heat diffusion process in the layers. The model was validated with empirical results from three experimental plots. A calibration procedure was successfully applied to determine key model parameters. The model can capture the most critical features of temperature variations and thermal performance of common abiotic green roof materials. The appreciable water-retention capacity of rockwool plays the dual role of supplying water to the soil to enhance evaporative cooling, and increasing the specific heat capacity of the green roof. The plastic drainage sheet with ample air spaces serves as an excellent thermal insulator. The model remains robust despite seasonal and weather variabilities. Our research findings contradict with some researches in the temperate region that the thermal dissipation in green roofs with dense vegetation is lower than thermally insulated bare roofs. The theoretical model could be used to simulate the micro-environmental conditions and predict the thermal performance of different materials to improve green roof design. 相似文献