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Examination of energy and visual comfort performance of thermo-chromic coatings for cellular offices

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  • Haratoka, Cagatay
  • Yalcin, Refet A.
  • Erturk, Hakan

Abstract

Thermo-chromic coatings are promising passive systems for providing energy saving performance. They change their optical properties within visible and solar wavelengths according to their temperature, as these coatings contain materials such as vanadium dioxide (V O2) that change phase at their transition temperature. In this study, energy savings performance of thin pigmented thermo-chromic coating attached on an ordinary window glass is investigated by modeling a simple office room for three different transition temperatures in three cities that are all in different climate regions of Turkey; Izmir, Istanbul and Ankara. Optical properties of thin thermo-chromic coatings attached on an ordinary glass are determined by transfer matrix method considering particle concentration and thickness of the coating. Optimal coating for all climatic conditions are determined by optimization for high energy savings performance while considering visual comfort. Comparison between double glazings with thin thermo-chromic coatings and ordinary double glazing is presented for energy improvement and visual comfort by useful daylight illuminance (UDI) approach. Consequently, up to 26% and 9% energy saving potential are observed in relatively hot and cold climates, respectively.

Suggested Citation

  • Haratoka, Cagatay & Yalcin, Refet A. & Erturk, Hakan, 2023. "Examination of energy and visual comfort performance of thermo-chromic coatings for cellular offices," Energy, Elsevier, vol. 267(C).
    • Handle: RePEc:eee:energy:v:267:y:2023:i:c:s036054422203403x
    DOI: 10.1016/j.energy.2022.126517
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    References listed on IDEAS

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    1. Dino, Ipek Gürsel & Meral Akgül, Cagla, 2019. "Impact of climate change on the existing residential building stock in Turkey: An analysis on energy use, greenhouse gas emissions and occupant comfort," Renewable Energy, Elsevier, vol. 141(C), pages 828-846.
    2. Aburas, Marina & Soebarto, Veronica & Williamson, Terence & Liang, Runqi & Ebendorff-Heidepriem, Heike & Wu, Yupeng, 2019. "Thermochromic smart window technologies for building application: A review," Applied Energy, Elsevier, vol. 255(C).
    3. Ochoa, Carlos E. & Aries, Myriam B.C. & van Loenen, Evert J. & Hensen, Jan L.M., 2012. "Considerations on design optimization criteria for windows providing low energy consumption and high visual comfort," Applied Energy, Elsevier, vol. 95(C), pages 238-245.
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