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现行 SE-14-C041
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Annual Daylight Glare Evaluation for Typical Perimeter Offices: Simulation Models Vs. Full Scale Experiments Including Shading Controls 典型周边办公室的年度日光眩光评估:模拟模型与包括阴影控制在内的全尺寸实验
视觉舒适性正成为设计工作和生活环境的主要优先事项之一。日光眩光是建筑物周边区域的常见问题,严重影响工作效率和居住者的舒适度。为了量化视觉不适的程度,人们开发了几种指标,日光眩光概率(DGP)现在被广泛接受为评估日光眩光的合适指标。虽然这是一个相对较新的概念,但它得到了实验结果的支持,并同时考虑了垂直眼睛照度和亮度源。 一种常用且方便的太阳能保护和眩光控制方法是使用卷帘。自动遮阳操作有可能减少能源消耗,同时确保视觉舒适。在本文中,开发了一个年度眩光评估模拟,以获得推荐的座位位置和观看方向,以改善典型周边私人办公室的视觉舒适性,具有不同的玻璃特性和卷帘类型。此外,最近开发的复杂阴影控制模式应用于模型中,以评估其视觉舒适性方面的效率。 该模拟方法利用混合光能传递和光线跟踪模型,结合视觉舒适度(DGP)计算,加快了计算过程。结果通过全尺寸实验得到了验证,包括使用带有鱼眼镜头的HDR相机进行亮度映射和不同阴影场景下的日光眩光评估。考虑到DGP强烈依赖于观察者的位置和视线方向,模块化模拟方法允许研究观察者的各种位置,以避免眩光- 可以确定典型办公空间几何结构的敏感位置。结果包括三种不同的气候和方向。这些数据有助于制定有关办公空间的未来设计建议。引文:ASHRAE论文CD:2014 ASHRAE年会,华盛顿州西雅图
Visual comfort is becoming one of the main priorities in designing working and living environments. Glare from daylight is a common issue in building perimeter zones that highly affects productivity and occupants' comfort. Several indicators were developed to quantify the degree of visual discomfort, and Daylight Glare Probability (DGP) is now widely accepted as an appropriate index evaluate glare due to daylight. Although it is a relatively new concept, it has been supported by experimental findings and considers both vertical eye illuminance and luminance sources. One of the commonly used and convenient ways of solar protection and glare control is using roller shades. Automated shading operation has the potential to reduce energy use while ensuring visual comfort. In this paper, an annual-basis glare evaluation simulation is developed to obtain recommended seating locations and viewing directions for improving visual comfort in a typical perimeter private office, with different glazing properties and roller shade types. In addition, recently developed sophisticated shading control modes are applied in the models to assess their efficiency in terms of visual comfort. The simulation method accelerates the calculation process by utilizing a hybrid radiosity and ray-tracing model combined with visual comfort (DGP) calculations. The results are validated by full-scale experiments, including the use of a HDR camera with fisheye lens for luminance mapping and daylight glare evaluation under different shading scenarios. Given the fact that DGP strongly depends on the position of the observer and the direction of the line of sight, the modular simulation method allows for various positions of the observer to be investigated so that glare-sensitive locations can be identified for typical office space geometry. Results include three different climates and orientations. This data is useful for developing future design recommendations concerning office spaces.
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