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The objective of this research is to demonstrate the application of an optimization framework to assess and improve the impacts of workstation properties in relation to the performance of electrochromic glass regarding daylight and visual comfort. This framework is executed through a simulation-based parametric modeling workflow of an open-plan office to optimize partition layout, height, direction to windows, and materiality in response to annual glare probability (DGP) and climate-based daylighting metrics. In this paper, different office layouts equipped with Electrochromic glass, located in a mixed-humid climate has been simulated with DIVA plug-in for Rhinoceros/grasshopper software to maximize the daylight and reduce the visual discomfort. The results of the optimization study show that the visual comfort and daylighting can be increased from 17 % to 36 UDI (100–2000 lx) while maintaining the percentage of occupied hours glare between 3.1 and 4.1. Considering these two aspects, the workstation with opaque 42” partition height in perimeter and 60” in Interior (“Pre 42_Int 60”) layout in 10° oriented towards the south perform the best with the Electrochromic user-based schedule. INTRODUCTION According to a broad range of studies, the quality of office environment is influenced by office layout, furnishing, and lighting quality (Kim & de Dear, 2013; Lee & Guerin, 2009). Although the previous studies believe that partitions in an open plan office spaces provide privacy for employees as the first objective in the design process, the robust role of partition layouts in the better distribution of daylight into the space and occupant visual comfort can not be undermined (Paper, Carolina, Modaresnezhad, & Nezamdoost, 2017). Lighting has a significant direct impact on office workspace, as the studies show daylit offices increase employees’ comfort, productivity, satisfaction, health, and well-being (Kelly, Painter, Mardaljevic, & Irvine, 2013). However, overlit spaces can cause glare and visual discomfort, especially with sunlight penetration when the amount of daylight is not sufficiently controlled. There are internal and external design strategies to control the daylight. The electrochromic glass as a dynamic shading device is used to both prevent and control undesirable daylight and solar radiation(Sbar, Podbelski, Yang, & Pease, 2012). Recently, by allowing the occupants to control the stage of tinting in glazing through a timed override, the window can be darkened only when the occupants are exposed to excessive daylight and the presents of glare, otherwise, it permits daylight penetration in the space (Arnold, 2010). In this case, the attributions of occupant locations (office layout properties, partition’s height, materiality and direction to windows) become crucial to provide visual comfort (Modaresnzhad, M Nezamdoost, 2017). Nevertheless, daylight buildings are rarely studied in terms of the impact of interior design strategies on the user-based performance of electrochromic glass. This study outlines the daylight performance of workstation strategies based on the userbased control of electrochromic glass to 1. Maximize daylight illuminance while minimizing visual discomfort and 2. Find the optimum solution for the future office layout refurbishment. 811 7th International Building Physics Conference, IBPC2018

healthy, intelligent and resilient buildings and urban environments

Comparative Study of Different Design Configurations Based on the Daylight and Visual Comfort Performance of Electrochromic Glass in a side-lit Office building