Next Article in Journal
Flyback Converter Using a D-Mode GaN HEMT Synchronous Rectifier
Previous Article in Journal
Power Quality of Renewable Energy Source Systems: A New Paradigm of Electrical Grids
Article

Quantifying of Vision through Polymer Dispersed Liquid Crystal Double-Glazed Window

1
Industry & Innovation Research Institute, Sheffield Hallam University, Sheffield S1 1WB, UK
2
Kuwait Fund for Arab Economic Development, Mubarak Al-Kabeer St., Safat, P.O. Box 2921, Kuwait City 13030, Kuwait
*
Author to whom correspondence should be addressed.
Academic Editors: Alessandro Cannavale and Dimitrios Katsaprakakis
Energies 2022, 15(9), 3196; https://doi.org/10.3390/en15093196
Received: 26 February 2022 / Revised: 20 April 2022 / Accepted: 25 April 2022 / Published: 27 April 2022
(This article belongs to the Topic Building Energy and Environment)
The visual linking of a building’s occupants with the outside views is a basic property of windows. However, vision through windows is not yet a metricized factor. The previous research employs a human survey methods to assess the vision through conventional windows. The recently fabricated smart films add a changeable visual transparency feature to the windows. The varied operating transparency challenges the evaluation of vision. Therefore, surveying human preferences is no longer a feasible approach for smart windows. This paper proposes an image-processing-based approach to quantify the vision quality through smart windows. The proposed method was experimentally applied to a polymer dispersed liquid crystal (PDLC) double-glazed window. The system instantaneously determines the available contrast band of the scenes seen through the window. The system adjusts the excitation of the PDLC film to maintain a desired vision level within the determined vision band. A preferred vision ratio (PVR) is proposed to meet the requirements of occupant comfort. The impact of the PVR on vision quality, solar heat gain, and daylight performance was investigated experimentally. The results show that the system can determine the available vision comfort band during daytime considering different occupant requirements. View Full-Text
Keywords: vision through windows; visual comfort; PDLC smart film; smart windows; image processing vision through windows; visual comfort; PDLC smart film; smart windows; image processing
Show Figures

Figure 1

MDPI and ACS Style

Lami, M.; Al-naemi, F.; Alrashidi, H.; Issa, W. Quantifying of Vision through Polymer Dispersed Liquid Crystal Double-Glazed Window. Energies 2022, 15, 3196. https://doi.org/10.3390/en15093196

AMA Style

Lami M, Al-naemi F, Alrashidi H, Issa W. Quantifying of Vision through Polymer Dispersed Liquid Crystal Double-Glazed Window. Energies. 2022; 15(9):3196. https://doi.org/10.3390/en15093196

Chicago/Turabian Style

Lami, Mohammed, Faris Al-naemi, Hameed Alrashidi, and Walid Issa. 2022. "Quantifying of Vision through Polymer Dispersed Liquid Crystal Double-Glazed Window" Energies 15, no. 9: 3196. https://doi.org/10.3390/en15093196

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop