共查询到20条相似文献,搜索用时 62 毫秒
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居住建筑使用遮阳卷帘夏季节能效果分析 总被引:3,自引:0,他引:3
建筑节能是全社会节约能源的重要组成部分,而居住建筑的节能在建筑节能中又占较大比重。目前我国住宅使用能耗占全国总能耗的20%左右,从能源消耗看,住宅使用能耗为相同气候条件下发达国家的2~3倍。在影响居住建筑能耗的诸多因素中,窗的太阳得热是一个不可忽视的重要因素。目前 相似文献
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建筑遮阳是建筑节能的重要组成部分,江苏已就居住建筑安装活动外遮阳产品进行强制性推广,北京也将在明年开始强制实行。但业界对活动外遮阳产品的选型与技术要求缺乏足够的认识。本文围绕该类产品的抗风性能、耐久性能和节能性能等关键参数的选型和技术要求,进行了系统的介绍。 相似文献
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通过对活动式外遮阳的研究,总结了居住建筑中常用的活动式外遮阳的类型和特点,并根据居住建筑中外遮阳所存在的问题,阐述了活动式外遮阳与居住建筑一体化设计的若干要求,提出了一些应用建议、设计方法及实施细则,以期促进活动式外遮阳在居住建筑中的推广应用。 相似文献
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Robert Hart Howdy Goudey D. Charlie Curcija 《Journal of Building Performance Simulation》2018,11(6):705-717
Virtually all residential and commercial windows in the U.S. have some form of window attachment, but few have been designed for energy savings. ISO 15099 presents a simulation framework to determine thermal performance of window attachments, but the model has not been validated for these products. This paper outlines a review and validation of the ISO 15099 centre-of-glass heat transfer correlations for perimeter gaps (top, bottom, and side) in naturally ventilated cavities through measurement and simulation. The thermal transmittance impact due to dimensional variations of these gaps is measured experimentally, simulated using computational fluid dynamics, and simulated utilizing simplified correlations from ISO 15099. Results show that the ISO 15099 correlations produce a mean error between measured and simulated heat flux of 2.5?±?7%. These tolerances are similar to those obtained from sealed cavity comparisons and are deemed acceptable within the ISO 15099 framework. 相似文献
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Many Korean apartment units use balconies as semi-indoor spaces by installing external windows. These balconies form environmental buffer spaces to improve comfort and reduce cooling and heating costs. However, the balcony spaces of some units have been removed and have been placed in living rooms. The removal of these environmental buffer spaces has caused problems. Significant heat loss through windows is one of the most serious problems; window surface condensation caused by low surface temperatures in the winter makes residents uncomfortable and damages construction materials. Therefore, it is evident that window design requires improvements.This study introduces a double window system with improved thermal performance and ventilation slits to solve the window surface condensation problem in apartment units without balconies. To verify the thermal performance of the proposed system, temperature factors were analyzed by field measurements. The condensation frequencies were also evaluated by temperature factors at an indoor temperature of 25 °C and 55% humidity. Ultimately, the double window system was able to reduce condensation frequency greatly.An examination of the air volume by ventilation slit operational mode found that the case with an open outer window bottom vent and an inner window top ventilation slit, discharged the indoor vapor effectively and increased the dew point of the window's surface. 相似文献
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建筑立面窗墙比直接影响建筑能耗,是居住建筑生态节能设计的重要参数,基于建筑被动设计思想,通过分析窗墙比对建筑能耗的影响,对寒冷地区建筑立面窗墙面积比设计策略进行了探讨。 相似文献
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指出窗户是保温节能的重点,从确定合理的窗墙面积比,提高窗户的窗封性能、增加空气间层、选择节能玻璃品种及采用保温窗帘等方面阐述了提高窗户保温隔热性能的措施,以提高居住建筑的节能效果。 相似文献
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N. M. Bouchlaghem 《Building Research & Information》1996,24(2):104-107
An efficient way of determining some of the glazing related variables is described, thus enabling thermal performance to be considered easily at the early design stage when inexpensive measures of heating and cooling can be advocated and tested. 相似文献
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北方采暖地区既有居住建筑窗体节能改造措施 总被引:1,自引:0,他引:1
针对建筑节能的重要性,分析了窗体节能改造的原理,探讨了窗体构造及窗体形式等对建筑能耗的影响,指出了窗体的节能改造措施,指出加强围护结构的保温特别是加强窗户的保温性和气密性是节约采暖能耗的关键环节。 相似文献