共查询到20条相似文献,搜索用时 109 毫秒
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建立供暖房间几何模型及人体与围护结构、室内空气传热模型。设定地板辐射供暖、散热器供暖条件下,供暖室内设计温度分别为16、18℃。对两种供暖方式下,人体与围护结构、室内空气的传热量进行计算。供暖室内设计温度降低2℃、地板辐射供暖方式下,人体的失热量比散热器供暖方式低。 相似文献
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为了研究围护结构热惰性对间歇供暖逐时热负荷附加的影响,笔者以北京某办公建筑围护结构热惰性作为分类,研究了围护结构类型Ⅰ、Ⅱ、Ⅲ以及围护结构类型Ⅱ保温形式对建筑逐时负荷、室内热环境影响,最后给出了在连续供暖耗热量基础上的逐时热负荷附加率,为间歇运行蓄热空调系统的设计和运行控制提供参考依据。 相似文献
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低温地板供暖在利用低品位能源方面具有一定的优势,已经广泛应用于居住建筑。本文利用传热学的基本理论建立了低温地板供暖房间和散热器供暖房间的传热数学模型,在设定的室内空气温度条件下,分别模拟得出了2种供暖方式房间在稳态传热条件下的围护结构表面温度和内表面换热系数,并利用上述计算结果对2种供暖方式房间热负荷之间的差异进行了比较。分析结果表明,在节能65%阶段,相同室内空气温度条件下,低温地板供暖房间热负荷大于散热器供暖房间热负荷;对于北京地区和哈尔滨地区,不同空气温度下2种供暖方式房间热负荷面积指标差值分别约为0.5~0.7 W/m2和0.3~0.5 W/m2。 相似文献
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低温地板辐射供暖特性参数的研究 总被引:5,自引:0,他引:5
建立了低温地板辐射供暖房间各围护结构的热平衡关系式,计算了地板表面温度、热流密度、室内空气温度和围护结构内表面温度。介绍了计算地板表面温度和围护结构内表面温度的耦合程序,测试了地板辐射供暖房间的特性参数。 相似文献
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中国供暖临界地区居建筑热环境分析 总被引:1,自引:0,他引:1
采用有效传热系数方法分析了中国供暖界地区的居住建筑室内热环境,结果表明:现有形式的住宅仅靠围护结构的保温作用和室内余热不能保证10℃的室内温度; 相似文献
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In this paper we present an algorithm for calculating the reference temperature in the rooms of a building. The algorithm works in such a way as to properly reduce the reference temperature in the rooms when they are not occupied, and at the correct start time, before the rooms are occupied, recover the reference temperature back to the defined value. The algorithm is tested in six rooms of a simulated hotel building using the well-known TRNSYS software. Different occupancy regimes are considered in the various rooms, and simulations are performed for a period of 1 year using the weather data of the town of Portoro?, Slovenia. The results obtained with the proposed algorithm are compared to the results achieved with a constant reference temperature setting. The comparison is made with regard to the energy consumed for the heating and cooling of the rooms, and taking account of the deviations from the allowed temperature rise time. In the rooms where the occupancy is not known in advance similar results can be obtained with the proposed algorithm as with the constant reference setting. However, in the rooms where the occupancy is known in advance, desired level of guest comfort can be preserved with the proposed algorithm with an approximately 10% lower energy consumption for the heating and cooling of the rooms than with the constant reference recovery time setting. 相似文献
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供暖分户计量及调节对设计热负荷的影响 总被引:9,自引:2,他引:7
供暖分户计量及调节导致户间传热的存在。通过对某个模型的分析,建立“自然室温”和“基础室温”概念,从而求出房间散热器的设计热负荷值以及不同房间在传统方法计算热负荷基础上的附加率,使得散热器的选择理为经济合理。 相似文献
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采用分户供暖后,供暖热负荷的计算不但要计算户间传热,还必须考虑户内邻室传热的构成和发生概率。由于存在相邻房间供暖不同步因素,指出分户供暖系统设计时应计入户内邻室传热,邻室温差应根据与计算对象相邻房间的用热特点和围护结构组成进行估算,经过大量的调查研究,确定出相邻房间同期系数的经验取值,并提出了各级热负荷的计算方法。 相似文献
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客户/Client:比利时王国/KingdomofBelgium合作者/Collaborators:KarenRomberg,DorisVogelsang,ReinhardHasselbach景观设计/Landscapearchitect:BenoitFondu,Belgium;MarioBobsien,Berlin艺术家/Artists:ThierryRenard,Belgium;Jean-FrancoisOctave,Belgium竞赛/Competition:1999年建造时间/Realization:2000年-2001年地段面积/Sitearea:2090m2改造面积/Builtarea:3560m21改造前老建筑外景/ViewoftheformerDDRbuildingbeforethetransformation2面向耶格尔大街的主立面/ThemainfacadetowardJagerstrasse比利时使馆是柏林使馆… 相似文献
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强调了系统的应用条件,给出处理散热量折减、房间过热的方法,认为应对采用低温热水地板辐射供暖系统的建筑的热工条件提出更具体的要求。 相似文献
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In this study we analyze the life cycle primary energy use of a wood-frame apartment building designed to meet the current Swedish building code, the Swedish building code of 1994 or the passive house standard, and heated with district heat or electric resistance heating. The analysis includes the primary energy use during the production, operation and end-of-life phases. We find that an electric heated building built to the current building code has greater life cycle primary energy use relative to a district heated building, although the standard for electric heating is more stringent. Also, the primary energy use for an electric heated building constructed to meet the passive house standard is substantially higher than for a district heated building built to the Swedish building code of 1994. The primary energy for material production constitutes 5% of the primary energy for production and space heating and ventilation of an electric heated building built to meet the 1994 code. The share of production energy increases as the energy-efficiency standard of the building improves and when efficient energy supply is used, and reaches 30% for a district heated passive house. This study shows the significance of a life cycle primary energy perspective and the choice of heating system in reducing energy use in the built environment. 相似文献