共查询到20条相似文献,搜索用时 156 毫秒
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高层节能住宅外墙外保温施工浅谈 总被引:3,自引:0,他引:3
阐述了高层建筑外墙外保温的发展方向简况,介绍了一种全新的外墙外保温体系-将钢丝网聚苯板放置于外墙外板内侧墙体浇注混凝土时一次成型的外保温墙体,阐述了保温板、墙体热工性能、施工工艺以及防止抹灰裂缝措施等方面的情况. 相似文献
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由于无机保温材料本身所具有的高阻燃性能,新型材料YT无机活性保温材料广泛应用于建筑保温市场。为比较其与传统保温材料挤塑板(XPS)的保温隔热性能,以及在内外保温形式中的适用性,用Fluent模拟出分别采用这2种材料的保温结构,在兰州地区南墙冬夏两季内外保温墙体的温度场。与前人的结果比较得出:相同季节,采用相同的保温形式,2种保温结构的墙体温度场分布差异不大,最大不超过±1.7℃。XPS板的保温隔热性能略优于YT保温材料,但节能效果并不显著,最大温差为1.28℃,出现在内保温冬季墙体内表面。且采用内保温形式的墙体,其墙体内表面温度波动幅度大于外保温。综合来看,YT无机活性保温材料可替代XPS板作为墙体保温隔热材料,且宜使用外墙外保温。 相似文献
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文章主要介绍了国内EPS板薄抹灰外墙外保温系统饰面涂料的选配,在工地施工时容易出现的几种质量问题,力求通过对质量问题的分析来探讨在施工过程中如何预防和避免这些质量隐患出现的可能性及相应的措施。 相似文献
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复合外墙内外保温的传热分析与应用探讨 总被引:3,自引:0,他引:3
王金良 《能源技术(上海)》2004,25(6):250-251,253
分别对复合外墙的内保温和外保温方式进行了传热分析,通过Matlab仿真计算得到了内、外保温时外墙体内各交界面处的温度在一天内的变化曲线,并作了对比性的分析,结合对传热、热应力和结露等因素的影响探讨,认为外保温方式是复合外墙节能保温的一种理想方式。 相似文献
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严寒地区多数农村住宅建筑围护结构热损失严重,造成其采暖能耗增加,强化建筑围护结构的保温性是提高建筑采暖效率的方式之一。以位于严寒地区的安达市某传统农宅为研究对象,采用EnergyPlus对该住宅围护结构的保温性能进行研究,并分析了建筑能耗情况,获得了建筑墙体、玻璃、屋顶等围护结构部位采用保温后的节能效率。研究结果表明:安达地区节能效率较好的墙体和屋顶保温材料为XPS保温板、玻璃窗结构形式为6mm+12mm+6mmLow-E低辐射玻璃;传统农宅采用建筑保温材料后,其节能率可达72.0%,从而降低了农村住宅采暖能耗,并可维持室内良好的热环境。 相似文献
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Insulation is one of the most effective methods intended for reducing energy consumption in both heating and cooling of buildings. Selecting the right materials and determining the optimum insulation thickness in building insulation application is an important issue. In 2000, the “Thermal Insulation Requirements for Buildings” was enacted in Turkey, energy saving by limiting the energy amount used for heating in buildings being the target. In this study, the effect of the alteration of windows and exterior wall areas on the heating energy requirement of the building and on the optimum insulation thickness has been examined by using P1–P2 method. The study has been carried out for four degree-day regions of Turkey for various insulation materials, glazing areas, and fuel types; the results have been presented in charts. In the rest of this study, effects of different insulation thicknesses and fuel on fuel consumption and thereby on emissions of pollutants such as CO2 and SO2 are evaluated. For example, in the building where XPS (extruded polystyrene foam) insulation material and natural gas are used and where the ratio of glazing area to exterior wall area is 0.2 (glazing area percentage), energy saving for the four regions has been found to be 13.996, 31.680, 46.613, and 63.071 $/m2, respectively, and the payback period of investment has been found to be 2.023, 1.836, 1.498, and 1.346 years, respectively. The emissions of CO2 are decreased by 50.91% for the cases in which optimum insulation material (XPS) and natural gas are used. The emissions of CO2 and SO2 are decreased by 54.67% for the cases in which optimum insulation material (XPS) and fuel oil are used. 相似文献
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针对太阳能富集地区居住建筑外墙构造特点和室外综合温度条件,以拉萨地区为例进行研究,提出了采暖居住建筑非平衡保温节能墙体构造,其中南墙不做保温、东西墙和北墙采用外保温。在对当地典型居住建筑形式和围护结构现状调研基础上,采用南墙兼顾延迟时间和传热系数,东西墙、北墙单位面积等净失热量的分析方法,确定了非平衡外墙的传热系数,并对以此设计的非平衡保温构造总净热损失和内表面温度进行了分析。给出了非平衡保温构造的计算与分析方法,为同类地区非平衡保温构造设计提供了方法和理论依据。 相似文献
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The thermal performance of a south-facing direct-gain room with shape-stabilized phase change material (SSPCM) plates has been analysed using an enthalpy model. Effects of the following factors on room air temperature are investigated: the thermophysical properties of the SSPCM (melting temperature, heat of fusion and thermal conductivity), inner surface convective heat transfer coefficient, location and thickness of the SSPCM plate, wall structure (external thermal insulation and wallboard material) etc. The results show that: (1) for the present conditions, the optimal melting temperature is about 20 °C and the heat of fusion should not be less than 90 kJ kg−1; (2) it is the inner surface convection, rather than the internal conduction resistance of SSPCM, that limits the latent thermal storage; (3) the effect of PCM plates located at the inner surface of interior wall is superior to that of exterior wall (the south wall); (4) external thermal insulation of the exterior wall obviously influences the operating effect and period of the SSPCM plates and the indoor temperature in winter; (5) the SSPCM plates create a heavyweight response to lightweight constructions with an increase of the minimum room temperature at night by up to 3 °C for the case studied; (6) the SSPCM plates really absorb and store the solar energy during the daytime and discharge it later and improve the indoor thermal comfort degree at nighttime. 相似文献
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以一栋典型干打垒建筑为研究对象,为解决其保护不善问题,提出了多种因素、多个目标综合分析的保护性低碳节能改造策略。建立干打垒建筑信息模型,为后续改造和管理提供数据支撑。在不影响文化和历史价值的基础上,研究了在外墙和屋顶上添加内保温材料以及更换外窗。考虑保护方法、传热系数限制和当地材料等因素,选取了6种保温材料和4种窗户类型,建立了24种工况。分别模拟和估算各个工况的能耗、碳排放和生命周期成本。基于节能、低碳及经济三个目标,采用分类比较与综合比较相结合的方法评价各个工况。结果表明,采用发泡聚苯乙烯(EPS)和90系列隔热铝合金窗,能耗、碳排放及成本最低,是最佳方案。该优化方法可以促进既有建筑创新节能和低碳改造方法的发展。 相似文献
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叙述了毛乌素沙漠某工程外墙采用水泥岩棉复合板进行外墙保温的施工准备及条件,分析了施工工艺及注意事项,指出,不燃材料外墙保温做法是目前民用建筑外墙保温的最佳选择。 相似文献