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Natural ventilation, relying on openings in the façade, is applicable to a limited range of climates, sites and building types. Advanced naturally ventilated buildings, such as those using stacks to encourage buoyancy driven airflow, or hybrid buildings, which integrate both natural and mechanical systems, can extend the range of buildings and climate within which natural ventilation might be used. 相似文献
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影响建筑节能设计的因素很多,如用地因素、墙体因素、窗户因素、屋顶因素等。通过对其影响因素的分析.指出了建筑热工设计对建筑节能的要求。 相似文献
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被动式节能设计强调的是建筑对气候和自然环境的顺应。使建筑物减少或者不需要对空调设备的依赖,而本身具有较强的气候适应和调节能力。本文通过对具体工程的案例分析探讨被动式节能对改善建筑热环境的积极意义。 相似文献
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南方节能建筑的隔热研究 总被引:4,自引:1,他引:4
通过对南方节能建筑外围护结构隔热机理的分析和不同隔热方式热过程的数值模拟与实测表明,吸收隔热和反射隔热是围护结构外表面隔热的基本机理,它对于建筑节能和改善建筑室内、外热环境具有重要意义。 相似文献
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介绍了该大楼的竖向贯通风井设计,这种设计通过竖向贯通风井代替风管,充分利用建筑南北温度差产生的压差,加速了空气的自然对流,增加了舒适度。分析了该大楼通风设计的形式、原理、优缺点以及节能性,结果表明该设计具有技术上先进、经济上适用、节能效果显著的优点,符合低碳环保的要求。 相似文献
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列举了我国设计机制不适应建筑节能需求的现象。提出了在规划设计中应用综合资源规划(IRP)方法、建立各专业参与的会商制度、将建筑模拟技术用于设计阶段的能耗权衡、建立全程优化调整机制,以及采用基于性能的设计合同等方法,以进一步提高我国暖通空调节能设计水平。 相似文献
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Assessment of natural and hybrid ventilation models in whole-building energy simulations 总被引:3,自引:0,他引:3
Natural ventilation is a traditional cost-effective technique to cool and ventilate buildings. Proper simulation tools are highly desired to ensure acceptable thermal performance of naturally ventilated buildings and to assist the design and optimization of such buildings. This study is to advance the use of natural and hybrid ventilation concepts in building design by assessing the accuracy and usability of current thermal-ventilation models. Because of the similarity noted among various models and tools, a prevalent airflow-thermal modeling program, EnergyPlus, was evaluated by simulating three selected real buildings that were supplied with most detailed building and measurement information. The study of these cases reveals that the current model has (1) significant functional limitations for venting and exhaust fan control schemes; (2) need for additional relationships to describe horizontal openings and fully-open connections between zones; and (3) possible over-prediction of buoyancy-driven flows in the case of multi-story buildings. The study further indicates the building and measurement data that are critical for a more accurate validation of thermal-ventilation models, including, on-site measured temperature, wind, and solar conditions; measured volume flow rate data, at critical points throughout the building; and effective area and discharge coefficients for specific vents used in building. 相似文献
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利用Desgnbuilder模拟软件对西部地域九个城市的典型办公建筑在自然通风和非自然通风条件下进行逐时能耗模拟,以节能率和单位面积节能量为指标,结合通风潜力计算结果综合分析各地区的自然通风节能潜力。结果表明各热工分区的自然通风节能潜力大小依次为温和地区、严寒地区、寒冷地区,夏热冬冷地区总体不具备自然通风节能潜力,但是在过渡季节仍有一定的节能效果。 相似文献
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针对建筑节能的重要性,从人体热感觉、热舒适和建筑节能的概念入手,指出节能建筑设计应以改善室内热环境,提高居民的舒适度为前提,将节能与舒适相结合,促进建筑业的可持续发展。 相似文献
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针对当前国内外建筑节能状况进行了简要介绍,从建筑节能的途径入手,探讨了建筑节能的具体措施,提出一种依赖太阳能供暖的建筑物构思,并作了具体阐述,对促进建筑节能工作的深入开展具有积极意义。 相似文献
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介绍了工业厂房通风的主要形式为自然通风、机械通风和混合通风,并对三种通风形式设计应注意的问题进行了探讨。对于工业厂房通风的设计,必须结合实际进行综合考虑,正确选择通风方式,达到改善室内空气环境的目的。 相似文献
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建筑节能在居住建筑设计中的应用 总被引:1,自引:0,他引:1
从建筑节能与规划设计、围护结构设计、周围环境设计这三个方面综合考虑建筑节能的一些技术手段,从设计的角度提出建造节能建筑的新思路,以引导人们进一步重视建筑节能,提高资源利用率,改善生态环境。 相似文献
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从建筑物物化能在建筑能耗中所占比例入手,分析了建筑物物化能与建筑物运行能耗之间的关系,并就建筑物物化能与国外发达国家进行了对比分析,研究发现我国建筑物物化能所占比例过高、能效过低,指出降低建筑物物化能能耗在我国建筑节能工作中的重要性。 相似文献
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Similarities of a reduced-scale building model using air as the working fluid for buoyancy-driven natural ventilation have been analyzed and experiments were carried out using the scaled model for a common natural ventilation building, which has open office floor plans connected to a central atrium. Both open and closed cases have been investigated for the stack vents, located at the top of the atrium. Inputs for the scaled building model were taken from results measured in the prototype building by the authors. The parameters of the scaled building model's experiments thus were used as inputs into a computational fluid dynamics (CFD) simulation model to compare predicted and measured airflow patterns, temperatures and velocity distributions in the scaled building model. 相似文献