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Impact of Phase Change Materials on Cooling Demand of an Educational Facility in Cairo, Egypt

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  • Ahmed M. Bolteya

    (Department of Construction and Building Engineering, Faculty of Engineering &Technology, Arab Academy for Science, Technology and Maritime Transport, Giza 3650111, Egypt)

  • Mohamed A. Elsayad

    (Department of Construction and Building Engineering, Faculty of Engineering &Technology, Arab Academy for Science, Technology and Maritime Transport, Giza 3650111, Egypt)

  • Ola D. El Monayeri

    (Department of Construction and Building Engineering, Faculty of Engineering &Technology, Arab Academy for Science, Technology and Maritime Transport, Giza 3650111, Egypt)

  • Adel M. Belal

    (Department of Construction and Building Engineering, Faculty of Engineering &Technology, Arab Academy for Science, Technology and Maritime Transport, Giza 3650111, Egypt)

Abstract

Heat gains and losses via building envelopes are impacted by varied characteristics such as geometry, orientation, properties of the building materials, and the type of construction and its interface with the exterior environment. Current studies are investigating the use of phase change materials (PCMs) characterized by high latent heat and low thermal conductivity that may cause temperature time lag and reduce amounts of heat transferred through building envelopes. The prime objectives of this research are evaluating zones’ energy consumption by type for an educational facility in a dry arid climate, examining the effects of a PCM (RT28HC) and polyurethane insulating material, comparing these effects to the existing situation with respect to cooling energy savings and CO 2 emissions, and studying the effect of varying PCM thicknesses. The working methodology depended on gathering the real status and actual material of the building, constructing models of the building using Design Builder (DB) simulation software, and comparing the insulation effect of incorporating polyurethane and phase change insulating materials. A parametric study evaluated various PCM thicknesses (6, 12, 18, 24, 30, and 36 mm). Validation was performed primarily for a selected year’s energy usage; simulation results complied with field measurements. The results revealed that an 18 mm PCM had a high efficiency regarding thermal comfort attributes, which reduced cooling energy by 17.5% and CO 2 emissions by 12.4%. Consequently, this study has shown the significant potential of PCM regarding improved energy utilization in buildings.

Suggested Citation

  • Ahmed M. Bolteya & Mohamed A. Elsayad & Ola D. El Monayeri & Adel M. Belal, 2022. "Impact of Phase Change Materials on Cooling Demand of an Educational Facility in Cairo, Egypt," Sustainability, MDPI, vol. 14(23), pages 1-14, November.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:23:p:15956-:d:988602
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    References listed on IDEAS

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    2. Saffari, Mohammad & de Gracia, Alvaro & Fernández, Cèsar & Cabeza, Luisa F., 2017. "Simulation-based optimization of PCM melting temperature to improve the energy performance in buildings," Applied Energy, Elsevier, vol. 202(C), pages 420-434.
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    4. de Gracia, Alvaro, 2019. "Dynamic building envelope with PCM for cooling purposes – Proof of concept," Applied Energy, Elsevier, vol. 235(C), pages 1245-1253.
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    Cited by:

    1. Viktoria Mannheim & Károly Nehéz & Salman Brbhan & Péter Bencs, 2023. "Primary Energy Resources and Environmental Impacts of Various Heating Systems Based on Life Cycle Assessment," Energies, MDPI, vol. 16(19), pages 1-23, October.

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