Thermo-fluid dynamic analysis of concrete masonry units via experimental testing and numerical modeling

Martínez, Marcos; Huygen, Nathaniel; Sanders, J.P.; Atamturktur, Sez

doi:10.1016/j.jobe.2018.04.029

Cited by 13 publications

(4 citation statements)

References 42 publications

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“…The thermal characteristics of concrete hollow bricks were studied in depth by Martines et al [146]. Both computational and empirical methods were used to examine the impact of insulating material within hollow bricks of varying geometries on thermal resistance (see Fig.…”

Section: 35mentioning

confidence: 99%

Energy Efficiency Coupled with Lightweight Bricks: Towards Sustainable Building: A review

Tarek

El-Naggar

Sameh

et al. 2023

SVU-International Journal of Engineering Sciences and Applicati

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This study investigates energy use in the construction sector and the potential for reducing energy consumption by improving the thermal efficiency of various building components, including walls, windows, roofs, and floors. The evaluation included a discussion on the prospects of reducing energy use. The building envelope is one of the most important factors to consider in terms of the heating and cooling energy efficiency of buildings. Walls are the fundamental component of a building's envelope and should provide thermal and acoustic comfort without compromising the aesthetic features of the building. The walls have a heat transfer area that is substantially higher than average, and the amount of heat gained or lost depends on the temperatures of the wall's inner and outside surface areas. Therefore, walls have a vital role in reducing the energy consumption of buildings. Bricks are a necessary component of highperformance thermal insulation, and lightweight bricks are especially useful in this regard. Bricks that are specifically manufactured for use in wall construction play an essential role in the management of energy consumption. The study has, as a result, provided a synopsis of the production of lightweight bricks in accordance with the source of the raw materials (e.g. Agriculture and industrial waste, etc).

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Section: 35mentioning

confidence: 99%

Energy Efficiency Coupled with Lightweight Bricks: Towards Sustainable Building: A review

Tarek

El-Naggar

Sameh

et al. 2023

SVU-International Journal of Engineering Sciences and Applicati

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“…In recent years, studies on combined heat transfer through hollow bricks have received much attention (Al-Awsh et al, 2020; Al-Tamimi et al, 2017; Boukendil et al, 2017; Costa, 2014; Fioretti and Principi, 2014; Fogiatto et al, 2019; Henrique Dos Santos et al, 2017; Huelsz et al, 2016; Jamal et al, 2020; Kocí et al, 2015; Martínez et al, 2018; Miroshnichenko and Sheremet, 2023; Pavlík et al, 2015; Pichler et al, 2021; Sambou et al, 2014). Fioretti and Principi (2014) evaluated the thermal efficiency of hollow bricks.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of combined heat transfers through concrete hollow bricks in a hot climate of Morocco

Jamal

Moutaouakil

Boukendil

et al. 2023

Journal of Building Physics

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The aim of this study is to determine the thermal conductance of concrete hollow bricks, which is crucial for assessing the energy efficiency of buildings. The study focuses on three types of concrete hollow bricks that are frequently used to build walls in Morocco. The three modes of heat transfer by convection, conduction and radiation are taken into account. The thermal behavior of the three types was simulated using a computational model created with the finite volume method. The effect of internal surfaces emissivity and solid wall thermal conductivity on overall heat transfer is investigated using practical values of the thermal excitations. Simulation results of the three types were compared and showed that the concrete hollow brick of Type (C) is the best performing configuration. Indeed, it reduces the thermal conductance ( U-value) by 40% compared to hollow brick of Type (B), which will contribute to improve the thermal resistance of the building walls.

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“…First approach is to reduce the thermal conductivity of brick material, and the second one is to optimise the geometry of perforated bricks. Martines et al [27] conduct detailed research on bricks to better understand the thermal properties of concrete bricks. Comprehensive experimental and numerical analyses are carried out for different hollow geometries and filling materials to evaluate their impacts on thermal insulation performance as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Improving thermal resistance of lightweight concrete hollow bricks: A numerical optimisation research for a typical masonry unit

Cüce

Cuce

Besir

2020

Journal of Energy Systems

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Heat loss/gain through the walls accounts for about 30% of the total building energy losses. Bricks are indispensable parts of buildings as a very common masonry wall unit; hence the present work aims at optimising thermal resistance of lightweight concrete hollow bricks through a CFD based numerical research. The optimisation is conducted over a certain number of independent variables such as hollow geometry and design, number of hollow rows across the heat transfer path and hollow depth for natural convection aspects within the hollow enclosure. A reliable CFD software ANSYS FLUENT 18.1 is utilised in the research. The accuracy of the CFD results is justified first through the reference model brick (RMB). Overall heat transfer coefficient (U-value) of RMB is determined to be 0.916 W/m2. K, which is in good accordance with the manufacturer's data report (0.9 W/m2.K). Following this, parametric research is carried out for various scenarios to optimise the U-value as a function of brick mass. Based on the findings, the maximum improvement is found to be about 53% (U-value 0.43 W/m2. K) through the case of B48 which has an h-ratio of 1 (continuous hollow from top to bottom). Moreover, depending on the increase in h-ratio, it is achieved that the thermal performance of the bricks proportionally increases. The minimum weight of the brick design (B45) is found to be 7.645 kg and the corresponding U-value is obtained as 0.44 W/m2. K.

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Thermo-fluid dynamic analysis of concrete masonry units via experimental testing and numerical modeling

Cited by 13 publications

References 42 publications

Energy Efficiency Coupled with Lightweight Bricks: Towards Sustainable Building: A review

Energy Efficiency Coupled with Lightweight Bricks: Towards Sustainable Building: A review

Numerical analysis of combined heat transfers through concrete hollow bricks in a hot climate of Morocco

Improving thermal resistance of lightweight concrete hollow bricks: A numerical optimisation research for a typical masonry unit

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