共查询到20条相似文献,搜索用时 15 毫秒
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建筑门窗的保温性与人们的日常生活息息相关,建筑门窗作为建筑外围结构保温性能最薄弱的部位,占整个建筑物长期使用能耗的50%。保温性作为衡量建筑门窗节能程度的指标,也愈来愈受到人们的关注和重视。提高门窗的保温性能是当前有效降低建筑物长期使用能耗的重要途径,我国也对建筑门窗保温性能提出了更为严格的要求,努力缩小与先进国家的差距,本文主要就我国当前建筑门窗保温性能的现状和解决措施提出几点看法。 相似文献
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《门窗》2017,(12)
作为节能减排体系中的重要构成环节,建筑门窗的保温性能不仅影响到整个建筑的质量和整个建筑供暖能源资源的利用效率;同时更是调控室内宜居环境的根本手段,直接关系到使用者的主观切身感受,建筑门窗良好的保温性能是提高使用者满意度的关键。近年来,随着我国建筑工艺与技术的不断进步和发展,目前我国建筑门窗的保温技术已相对完善,在实际应用中也获得了令人满意的效果。但同时要注意到,对于建筑门窗保温性能的检测还尚处于起步阶段,存在诸多不足,如性能检测体系不完善、标准体系推广度不够等。基于此,本文以建筑门窗保温性能的检测为对象,分析了现阶段几种常见的检测技术的应用效果和存在的问题,并以国外相关先进经验为对比,就问题的解决提出了几点意见和建议,以其能够为后续我国建立更为科学的建筑门窗保温性能检测体系贡献力量。 相似文献
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本文探讨了浇注式隔热型材所使用的隔热原胶的线膨胀系数、热变形温度、相容性及隔热型材的切桥宽度,并由此带来的隔热型材的问题。 相似文献
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Site observation and detailed finite element thermal modelling were employed and with these techniques it was possible to show how poor storage and handling damaged individual insulated elements and more importantly how the mortar acted as a cold bridge across the insulation. This highlighted the need to consider all thermal bridging of a wall construction if the true thermal performance is to be realised. 相似文献
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中空玻璃由于具有良好的绝热和隔音性能,目前已被广泛的应用于住宅、饭店、宾馆、办公楼、学校、医院、商店等需要室内空调的场合,同时也被应用于火车、汽车、轮船、冷冻柜等处。随着市场需求和应用领域的不断扩大,对中空玻璃产品的质量要求也越来越高,生产出高质量的中空玻璃,是提高市场竞争力的重要手段,这就要求我们要熟练地掌握和正确控制中空玻璃的生产工艺。 相似文献
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矿物绝缘电缆施工技术 总被引:3,自引:1,他引:3
介绍了矿物绝缘电缆的工艺原理,具体阐述了其施工工艺流程及操作要点,指出矿物绝缘电缆是一种新型的防火电缆,具有载流量大、耐过载、防爆、耐腐蚀性、无烟无卤无毒环保等特点,可用于工业、民用建筑等消防系统、救生系统等电缆布线. 相似文献
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Reinforced concrete roof slabs can be an ideal alternative to traditional roofs considering the better cyclone resistance that can be offered due to the self weight. However, the concrete slabs do not perform satisfactorily in warm humid tropical climatic conditions and tend to act as heated bodies for the occupants in free running spaces. As a solution, a robust roof slab insulation system is proposed and its thermal performance was determined experimentally using small and large-scale models. With comfort models developed for the people acclimatized to tropical climatic conditions, it is shown that insulated roof slabs could provide acceptable indoor conditions while providing many valuable benefits such as cyclone resistance, regaining of land lost for the house and the possibility of creation of roof top gardens. 相似文献
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《Fire Safety Journal》2007,42(6-7):452-460
Research has demonstrated that fibre-reinforced polymers (FRPs) can be used efficiently and safely in strengthening and rehabilitation of reinforced concrete structures. However, the use of FRPs in buildings has been limited because relatively little is known about the behaviour in fire of reinforced concrete structural members that have been strengthened with FRP systems. This paper presents the recent results of an ongoing experimental study of the fire performance of FRP-wrapped reinforced concrete circular columns. The results of fire tests on two columns are presented, one of which was tested without supplemental fire protection, and one of which was protected by a supplemental fire protection system applied to the exterior of the FRP-strengthening system. The primary objective of these tests was to compare the fire behaviour of the two FRP-wrapped columns and to investigate the effectiveness of the supplemental insulation system. The thermal and structural behaviour of the two columns are discussed. The results show that, although FRP systems are sensitive to high temperatures, satisfactory fire endurance ratings can be achieved for reinforced concrete columns that are strengthened with FRP systems by providing adequate supplemental fire protection. In particular, the insulated FRP-strengthened column in this study was able to resist elevated temperatures during the fire tests for at least 90 min longer than the equivalent uninsulated FRP-strengthened column. 相似文献