...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Energy >Uncertainty and sensitivity analyses of energy and visual performances of office building with external venetian blind shading in hot-dry climate
【24h】

Uncertainty and sensitivity analyses of energy and visual performances of office building with external venetian blind shading in hot-dry climate

机译：干热气候下带有外部百叶帘的办公大楼的能量和视觉性能的不确定度和敏感性分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fenestration has become an integral part of the buildings and has a significant impact on the energy and indoor visual performances. Inappropriate design of the fenestration component may lead to low energy efficiency and visual discomfort as a result of high solar and thermal heat gains, excessive daylight and direct sunlight. External venetian blind has been identified as one of the effective shading devices for controlling the heat gains and daylight through fenestration. This study explores uncertainty and sensitivity analyses to identify and prioritize the most influencing parameters for designing glazed components that include external shading devices for office buildings. The study was performed for hot-dry climate of Jodhpur (Latitude 26 degrees 180'N, longitude 73 degrees 010'E) using EnergyPlus, a whole building energy simulation tool providing a large number of inputs for eight facade orientations. A total 150 and 845 data points (for each orientation) for input variables were generated using Hyper Cubic Sampling and extended FAST methods for uncertainty and sensitivity analyses respectively. Results indicated a large uncertainty in the lighting, HVAC, source energy consumptions and useful daylight illuminance (UDI). The estimated coefficients of variation were highest (up to 106%) for UDI, followed by lighting energy (up to 45%) and HVAC energy use (around 33%). The sensitivity analysis identified window to wall ratio, glazing type, blind type (orientation of slats) and slat angle as highly influencing factors for energy and visual performances regardless of facade orientation. The other influencing parameters are interior surface absorptance of wall and front surface solar reflectance of blind slat; however, the magnitude of influence varied with facade orientation. (C) 2016 Elsevier Ltd. All rights reserved.
机译：窗饰已成为建筑物不可或缺的一部分，并且对能源和室内视觉性能产生重大影响。开窗部件的设计不当可能会导致太阳能和热量的大量获取，日光过多和阳光直射，从而导致能源效率低下和视觉不适。外部百叶窗被认为是通过开窗来控制热量获取和日光的有效遮阳设备之一。这项研究探索了不确定性和敏感性分析，以识别和优先考虑设计玻璃组件的最有影响力的参数，这些组件包括办公楼的外部遮光设备。这项研究是使用EnergyPlus进行的，针对焦特布尔的干热气候（纬度26度180'N，经度73度010'E）进行的研究。EnergyPlus是一个完整的建筑能源模拟工具，可为八种立面方位提供大量输入。使用超立方采样和扩展FAST方法分别为不确定性和灵敏度分析生成了输入变量的总共150个和845个数据点（每种方向）。结果表明在照明，HVAC，光源能耗和有用的日照度（UDI）方面存在很大的不确定性。 UDI的估计变异系数最高（高达106％），其次是照明能源（高达45％）和HVAC能源使用（约33％）。敏感性分析将窗户与墙壁的比率，玻璃类型，百叶窗类型（板条的方向）和板条角度确定为与外观无关的能量和视觉性能的高度影响因素。其他影响参数是壁的内表面吸收率和百叶窗板的正面太阳反射率。但是，影响的大小随立面方位的不同而不同。 （C）2016 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号