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Impact of Insulation Type and Thickness on the Dynamic Thermal Characteristics of an External Wall Structure

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  • Jihui Yuan

    (Department of Architectural Engineering, Graduate School of Engineering, Osaka University, Suita 5650871, Japan)

Abstract

The dynamic thermal characteristics of external wall structures are directly related to indoor thermal comfort and energy savings in buildings; they are also complicated and worth investigating. Thermal insulation in external wall structures has become a popular topic of investigation in the domain of building energy efficiency. This study aims to find the impact of insulation type and thickness on the dynamic thermal characteristics of external wall structures using a homogeneous multi-layer building external wall structure and three types of insulation materials that are widely used in Japan. The impact of insulation type and thickness on seven thermal characteristics of external walls, including thermal transmittance, decrement factor or amplitude attenuation, time lag, thermal admittance, time lead for thermal admittance, surface factor, and thermal capacity, was evaluated by numerical methods in this study. It was shown that insulation type and thickness would have a significant effect on thermal transmittance, decrement factor and time lag, but yield no significant change in thermal admittance, time lead for thermal admittance, surface factor, and the thermal capacity of external wall structures.

Suggested Citation

  • Jihui Yuan, 2018. "Impact of Insulation Type and Thickness on the Dynamic Thermal Characteristics of an External Wall Structure," Sustainability, MDPI, vol. 10(8), pages 1-14, August.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:8:p:2835-:d:162933
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    References listed on IDEAS

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    1. Kontoleon, K.J. & Eumorfopoulou, E.A., 2008. "The influence of wall orientation and exterior surface solar absorptivity on time lag and decrement factor in the Greek region," Renewable Energy, Elsevier, vol. 33(7), pages 1652-1664.
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    Cited by:

    1. Xiaojun Liu & Xin Chen & Mehdi Shahrestani, 2020. "Optimization of Insulation Thickness of External Walls of Residential Buildings in Hot Summer and Cold Winter Zone of China," Sustainability, MDPI, vol. 12(4), pages 1-21, February.
    2. Kumar, Dileep & Alam, Morshed & Zou, Patrick X.W. & Sanjayan, Jay G. & Memon, Rizwan Ahmed, 2020. "Comparative analysis of building insulation material properties and performance," Renewable and Sustainable Energy Reviews, Elsevier, vol. 131(C).
    3. Goopyo Hong & Suk-Won Lee & Ji-Yeon Kang & Hyung-Geun Kim, 2019. "Thermal Behavior and Measures to Prevent Condensation of a Newly Developed External Wall Panel," Sustainability, MDPI, vol. 11(3), pages 1-14, February.
    4. Xin Ye & Jun Lu & Tao Zhang & Yupeng Wang & Hiroatsu Fukuda, 2021. "Improvements in Energy Saving and Thermal Environment after Retrofitting with Interior Insulation in Intermittently Cooled Residences in Hot-Summer/Cold-Winter Zone of China: A Case Study in Chengdu," Energies, MDPI, vol. 14(10), pages 1-20, May.
    5. Haleh Boostani & Polat Hancer, 2018. "A Model for External Walls Selection in Hot and Humid Climates," Sustainability, MDPI, vol. 11(1), pages 1-23, December.
    6. Yupeng Wang & Hiroatsu Fukuda, 2019. "The Influence of Insulation Styles on the Building Energy Consumption and Indoor Thermal Comfort of Multi-Family Residences," Sustainability, MDPI, vol. 11(1), pages 1-14, January.
    7. Jesús M. Blanco & Yokasta García Frómeta & Maggi Madrid & Jesús Cuadrado, 2021. "Thermal Performance Assessment of Walls Made of Three Types of Sustainable Concrete Blocks by Means of FEM and Validated through an Extensive Measurement Campaign," Sustainability, MDPI, vol. 13(1), pages 1-18, January.
    8. Jung Ho Kim & Young Il Kim, 2021. "Optimal Combination of External Wall Insulation Thickness and Surface Solar Reflectivity of Non-Residential Buildings in the Korean Peninsula," Sustainability, MDPI, vol. 13(6), pages 1-24, March.

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