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A fast computational approach for the determination of thermal properties of hollow bricks in energy-related calculations

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  • Kočí, Jan
  • Maděra, Jiří
  • Černý, Robert

Abstract

As successful products of the recent developments in the building industry aimed at increasing the energy efficiency of buildings, the hollow clay brick blocks with complex systems of internal cavities present a prospective alternative to the traditional solid bricks on the building ceramics market. Determination of their thermal properties, which are essential for any energy-related calculations, is though not an easy task. Contrary to the solid bricks, the application of sophisticated methods is a necessity. In this paper, a fast computational approach for the determination of equivalent thermal conductivity of hollow brick blocks with the cavities filled by air is presented, which can be used as an integral part of energy-related calculations. The thermal conductivity of the brick body is the main input parameter of the model, the convection and radiation in the cavities are taken into account in a simplified form. The error range of the designed method is identified using a thorough uncertainty analysis. A direct comparison of the calculated equivalent thermal conductivity with the results obtained by two different experimental techniques for the same hollow brick block shows a satisfactory agreement, making the designed computational approach a viable alternative to the currently used methods.

Suggested Citation

  • Kočí, Jan & Maděra, Jiří & Černý, Robert, 2015. "A fast computational approach for the determination of thermal properties of hollow bricks in energy-related calculations," Energy, Elsevier, vol. 83(C), pages 749-755.
    • Handle: RePEc:eee:energy:v:83:y:2015:i:c:p:749-755
    DOI: 10.1016/j.energy.2015.02.084
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    References listed on IDEAS

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    1. Li, Zhengwei & Han, Yanmin & Xu, Peng, 2014. "Methods for benchmarking building energy consumption against its past or intended performance: An overview," Applied Energy, Elsevier, vol. 124(C), pages 325-334.
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    3. Antar, Mohamed A., 2010. "Thermal radiation role in conjugate heat transfer across a multiple-cavity building block," Energy, Elsevier, vol. 35(8), pages 3508-3516.
    4. Fan, Cheng & Xiao, Fu & Wang, Shengwei, 2014. "Development of prediction models for next-day building energy consumption and peak power demand using data mining techniques," Applied Energy, Elsevier, vol. 127(C), pages 1-10.
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    Cited by:

    1. Xin, Yuecheng & Robert, Dilan & Mohajerani, Abbas & Tran, Phuong & Pramanik, Biplob Kumar, 2023. "Energy efficiency of waste reformed fired clay bricks-from manufacturing to post application," Energy, Elsevier, vol. 282(C).
    2. Kočí, Václav & Kočí, Jan & Maděra, Jiří & Černý, Robert, 2016. "Contribution of waste products in single-layer ceramic building envelopes to overall energy savings," Energy, Elsevier, vol. 111(C), pages 947-955.

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