4.7 Article

A user detective adaptive facade towards improving visual and thermal comfort

Journal

JOURNAL OF BUILDING ENGINEERING
Volume 33, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.jobe.2020.101554

Keywords

Visual comfort; Heat gain; Occupant's position; Adaptive facade

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This study addresses less-attended issues in current literature by proposing an innovative approach to improving visual comfort and heat gain for occupants through adaptive facade design. Using parametric simulation and Genetic algorithm optimization, the proposed system showed significant improvements in both visual and thermal comfort, compared to conventional shading states.
Adaptive skins and, in particular, adaptive facade play a significant role in the future of environmentally friendly spaces. Meanwhile, occupants' involvement in the process of adaptive facade design and operation is essential to guarantee its usefulness. This study aimed to address two less-attended issues in current literature in the process of adaptive facade design. First, a few research attempted to include users during adaptive facade design processes. Second, less attention is given to the simultaneous optimization of both visual and thermal comfort during adaptive facade design. Given these, an innovative methodology is developed to involve occupant's/s' position inside space while considering comfort issues. Another novelty of this study is the geometry associated with double-sided material. Improvement in visual comfort quantity and heat gain are the objectives of this study for the position of occupant/s. Parametric simulation and Genetic algorithm optimization have been used to carry out this research. On average, there was a 76% improvement in visual comfort of the occupant throughout the year by the proposed system compared to the conventional shading state. Besides, there was in average 60% improvement for the heat gain improvement via the proposed adaptive facade compared to the conventional shading state when the objective function was set to increase the heat gain. Also, when the objective function is set to decrease heat gain, a 59% improvement has been achieved compared to no shading state. Finally, the proposed adaptive facade and the innovative method of design can be used to address the position of the user/s inside space to enhance visual and thermal comfort.

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