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Reflective thermal insulation systems in building: A review on radiant barrier and reflective insulation

Author

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  • Lee, Sau Wai
  • Lim, Chin Haw
  • Salleh, Elias @ Ilias Bin

Abstract

The concerns over depletion of fossil fuel resources and negative environmental impact arising from energy generation have prompted increasing attention on the use of thermal insulation in building energy conservation. This article strives to make an overall review of reflective thermal insulation system which focuses on radiant barrier and reflective insulation. The main parameters in evaluating the performance of radiant barrier system are reduction of heat flux, thermal load and attic air temperature. Based on studies, radiant barrier is effective in reducing heat flux, thermal load and attic air temperature during summer and to a lesser extent during winter. Researchers found that on average radiant barrier installed on attic space could reduce heat flux by 26% to 50% and cooling load by 6% to 16% during cooling seasons. Fundamentally, reflective insulation system works under enclosed reflective airspace(s) and thus its key thermal performance is usually measured by level of thermal resistance produced by the enclosed air cavity. Although many research works have been conducted on reflective insulation, there are still many uncertainties exist in predicting the correct resistance value. The most commonly used method to measure the resistance value is guarded hot box which can simulate large-scale assemblies that are closer to real conditions. Heat flow meter was used to test smaller specimen. Calculation using theoretical approach provides a more simplified method to predict the resistance value. However, this method may tend to over predict the value given the limitations from which its basis was formed. It was discovered that emittance of upward facing reflective foil used in both radiant barrier and reflective insulation system are also susceptible to degradation due to dust accumulation, moisture condensation and corrosion. Hence, it is imperative to ensure a low-emittance surface for a sustainable performance of both insulation systems in the long run.

Suggested Citation

  • Lee, Sau Wai & Lim, Chin Haw & Salleh, Elias @ Ilias Bin, 2016. "Reflective thermal insulation systems in building: A review on radiant barrier and reflective insulation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 65(C), pages 643-661.
  • Handle: RePEc:eee:rensus:v:65:y:2016:i:c:p:643-661
    DOI: 10.1016/j.rser.2016.07.002
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    Citations

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    Cited by:

    1. Paola Marrone & Francesco Asdrubali & Daniela Venanzi & Federico Orsini & Luca Evangelisti & Claudia Guattari & Roberto De Lieto Vollaro & Lucia Fontana & Gianluca Grazieschi & Paolo Matteucci & Marta, 2021. "On the Retrofit of Existing Buildings with Aerogel Panels: Energy, Environmental and Economic Issues," Energies, MDPI, vol. 14(5), pages 1-22, February.
    2. Yutong Li & Atsushi Teramoto & Takaaki Ohkubo & Akihiro Sugiyama, 2022. "Estimation of Indoor Temperature Increments in Summers Using Heat-Flow Sensors to Assess the Impact of Roof Slab Insulation Methods," Sustainability, MDPI, vol. 14(22), pages 1-23, November.
    3. Yang, Yang & Chen, Sarula, 2022. "Thermal insulation solutions for opaque envelope of low-energy buildings: A systematic review of methods and applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).
    4. Hawks, M.A. & Cho, S., 2024. "Review and analysis of current solutions and trends for zero energy building (ZEB) thermal systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 189(PB).
    5. Pourghorban, Arash & Kari, Behrouz Mohammad & Asoodeh, Hedyeh, 2022. "Holistic survey of reflective insulation systems (RISs) in vertical applications in building envelopes under various climatic conditions," Energy, Elsevier, vol. 242(C).
    6. Rempel, Alexandra R. & Danis, Jackson & Rempel, Alan W. & Fowler, Michael & Mishra, Sandipan, 2022. "Improving the passive survivability of residential buildings during extreme heat events in the Pacific Northwest," Applied Energy, Elsevier, vol. 321(C).
    7. Lima-Téllez, T. & Chávez, Y. & Hernández-López, I. & Xamán, J. & Hernández-Pérez, I., 2022. "Annual thermal evaluation of a ventilated roof under warm weather conditions of Mexico," Energy, Elsevier, vol. 246(C).
    8. Hamed H. Saber & David W. Yarbrough, 2021. "Advanced Modeling of Enclosed Airspaces to Determine Thermal Resistance for Building Applications," Energies, MDPI, vol. 14(22), pages 1-36, November.
    9. Wang, Cheng & Guo, Xiaofeng & Zhu, Ye, 2019. "Energy saving with Optic-Variable Wall for stable air temperature control," Energy, Elsevier, vol. 173(C), pages 38-47.

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