Parametric model of window-integrated planer Cassegrain concentrator-based shading system (PCSS)

Nayab Bushra

Applied Energy, 2023, vol. 340, issue C, No S0306261923003653

Abstract: This study proposes a performance-driven design method for a new and novel, window-integrated planer Cassegrain concentrator shading system (PCSS) for daylight and energy applications. The integration process is complex and needs to address multi-disciplinary concerns, where the PCSS’s performance depends on system design and building geometries ensuring good solar gains. The method is rigorous yet adaptable to inform decision-making involving multiple stakeholders and promote the use of PCSSs as, window-integrated technology. The method contributes to engineering PCSS with respect to windows in a parametric model. A total of 3,750 designs are generated by controlling parameters related to the building (i.e., orientation, window-to-wall ratio (WWR), louvers’ tilt and number), and PCSS (i.e., modules number, mirrors’ shape and dimensions). The method is validated in an illustrative case study of a residential building in Madrid (Spain), where the performance is assessed in terms of annually-averaged electrical load match index (av.LMIEl), thermal load match index (av.LMITh), continuous daylight autonomy (cDA(500 lx)), and useful daylight illuminance (UDI(100–2000 lx)). Further, a sensitivity analysis is performed to investigate the relative significance of parameters. The method enables a performance-driven design of buildings and PCSSs and facilitates stakeholders for informed decision-making in projects concerning energy transition in buildings.

Keywords: Window-integrated; Planer Cassegrain concentrator; Shading; Parametric modeling; Load match index; Continuous daylight autonomy, useful daylight illuminance (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (2)

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DOI: 10.1016/j.apenergy.2023.121001

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