Comfort and energy performance analysis of different glazing systems coupled with three shading control strategies
Comfort and energy performance analysis of different glazing systems coupled with three shading control strategies
复制标题
不同玻璃系统的舒适度和能源性能分析以及三种遮阳控制策略
DOI：
10.1080/23744731.2018.1449517
复制
发表时间：
2018
影响因子：
1.9
通讯作者：
Athanasios Tzempelikos
中科院分区：
文献类型：
--
作者：
A. Atzeri;A. Gasparella;F. Cappelletti;Athanasios Tzempelikos
通常需要遮阳控制策略来优化太阳能增益、日光可用性、眩光防护和外部视野之间的平衡。自动遮阳操作如果设计得当，可以避免手动操作造成的性能损失，同时保持室内环境舒适度。在这项工作中，针对典型的办公空间展示了不同玻璃系统的综合性能以及卷帘的三种控制方法。第一个控制是基于工作平面照度范围的标准开闭操作，而其他两个控制则能够根据太阳位置设置中间遮光位置，以最大限度地提高采光。第三种控制方法通过施加工作平面照度阈值来减少日光不适眩光的风险，从而解决工作平面上的过多日光问题。 Daysim基于Radiance和日光系数法计算工作平面的年照度分布，Evalglare用于计算眩光指数。 EnergyPlus 用于热舒适度和能量分析。结果通过 MATLAB 代码进行处理，将所需信息从一种工具传输到另一种工具。此外，为了评估所研究的遮阳控制和开窗配置的整体性能，通过一组能够表达可用性（在特定位置具有可接受的舒适条件的时间比例）和空间可用性（在特定时刻同时处于舒适范围内的空间比例）的指标来评估视觉和热舒适度。能源绩效还根据供暖、制冷和照明的一次能源需求进行了量化。结果表明，平衡采光、热和视觉舒适度以及能源使用是可能的。这可以通过同时选择允许充足日光而不引起眩光的遮阳控制和具有良好热性能的玻璃特性来实现，该玻璃特性允许充足的日光（高可见光透射率）但限制太阳增益（较低的太阳透射率或太阳热增益系数[SHGC]），适合温和和以制冷为主的气候。
Shading control strategies are often required to optimize the balance between solar gains, daylight availability, glare protection, and view to the outside. Automated shading operation, when properly designed, may avoid performance losses due to manual operation while maintaining indoor environmental comfort. In this work, the integrated performance of different glazing systems coupled with three control approaches for roller shades is presented for a typical office space. The first control is a standard open–closed operation based on a workplane illuminance range, while the other two are able to set intermediate shade positions according to the solar position to maximize daylighting. The third control addresses excessive daylight on the workplane by imposing a workplane illuminance threshold to reduce the risk of daylight discomfort glare. Daysim, based on Radiance and the daylight coefficient method, was used to calculate the annual illuminance profile over the workplane, and Evalglare was used to calculate glare indexes. EnergyPlus was used for thermal comfort and energy analysis. The results were processed through a MATLAB code for transferring required information from one tool to another. Moreover, to assess the global performance of the shading controls and fenestration configurations studied, visual and thermal comfort were evaluated through a set of metrics able to express both the availability (the fraction of time with acceptable comfort conditions at specific positions) and the spatial usability (the fraction of space simultaneously within comfort range at specific moments). The energy performance was also quantified in terms of primary energy demand for heating, cooling, and lighting. The results showed that it is possible to balance daylighting, thermal and visual comfort, and energy use. This can be achieved by simultaneously selecting shading controls that allow adequate daylight without causing glare, and glazing properties with good thermal performance that allow adequate daylight (high visible transmittance) but limit solar gains (lower solar transmittance or solar heat gain coefficient [SHGC]) for moderate and cooling-dominated climates.