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Evaluation of Energy and Daylight Performance of Old Office Buildings in South Korea with Curtain Walls Remodeled Using Polymer Dispersed Liquid Crystal (PDLC) Films

Author

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  • Myunghwan Oh

    (Energy Efficiency Building Materials Center, Energy Division, Korea Conformity Laboratories (KCL), 595-10, Pyengsin 1-ro, Daesan-eup, Seosan-si 31900, Chungnam, Korea)

  • Chulsung Lee

    (Future agricultural Research Division, Korea Rural Research Institute, 870, Haean-ro, Sangnok-gu, Ansan-si, 15634, Gyeonggi-do, Korea)

  • Jaesung Park

    (Energy Efficiency Building Materials Center, Energy Division, Korea Conformity Laboratories (KCL), 73, Yangcheong 3-gil, Ochang-eup, Cheongju-si 28115, Chungbuk, Korea)

  • Kwangseok Lee

    (Research and Development Center, Bestroom corporation, 106-46, Gwahakdangi-ro, Gangneung-si, 25440, Gangwon-do, Korea)

  • Sungho Tae

    (School of Architecture & Architectural Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangrok-gu, Ansan-si 15588, Gyeonggi-do, Korea)

Abstract

Globally, energy standards for new buildings are being reinforced to improve energy efficiency, and remodeling policies are being promoted for old buildings. The South Korean Government is promoting green remodeling projects, and focusing on research and product development to improve the performance of old windows and curtain walls. In line with this, the present study proposes two remodeling methods using polymer dispersed liquid crystal (PDLC) films, which can adjust solar radiation for old office buildings. In addition, energy efficiency improvement and daylight performance according to remodeling were analyzed. Attaching PDLC films to the glass of old curtain walls was analyzed; this can reduce heating and cooling energy, reduce the annual discomfort glare occurrence rate, and increase the annual indoor appropriate illuminance ratio. Furthermore, producing a window by laminating a PDLC film between two sheets of glass and putting it over the existing curtain wall was also analyzed; this can reduce annual building energy consumption and the annual discomfort glare occurrence rate, and improve the annual indoor appropriate illuminance ratio. Therefore, PDLC film is expected to be applicable as a next-generation green remodeling material because using it in remodeling can improve energy efficiency of old office buildings and indoor daylight performance.

Suggested Citation

  • Myunghwan Oh & Chulsung Lee & Jaesung Park & Kwangseok Lee & Sungho Tae, 2019. "Evaluation of Energy and Daylight Performance of Old Office Buildings in South Korea with Curtain Walls Remodeled Using Polymer Dispersed Liquid Crystal (PDLC) Films," Energies, MDPI, vol. 12(19), pages 1-26, September.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:19:p:3679-:d:270946
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    References listed on IDEAS

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    Cited by:

    1. Ghosh, Aritra, 2023. "Investigation of vacuum-integrated switchable polymer dispersed liquid crystal glazing for smart window application for less energy-hungry building," Energy, Elsevier, vol. 265(C).
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    3. Field, Edward & Ghosh, Aritra, 2023. "Energy assessment of advanced and switchable windows for less energy-hungry buildings in the UK," Energy, Elsevier, vol. 283(C).
    4. Mohammed Lami & Faris Al-naemi & Hameed Alrashidi & Walid Issa, 2022. "Quantifying of Vision through Polymer Dispersed Liquid Crystal Double-Glazed Window," Energies, MDPI, vol. 15(9), pages 1-23, April.
    5. Nundy, Srijita & Ghosh, Aritra, 2020. "Thermal and visual comfort analysis of adaptive vacuum integrated switchable suspended particle device window for temperate climate," Renewable Energy, Elsevier, vol. 156(C), pages 1361-1372.

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