Numerical study of heat transfer in a wall of vertically perforated bricks: influence of assembly method |
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| Affiliation: | 1. Centre Technique des Tuiles et Briques, 200 Avenue du Général de Gaulle, 92140 Clamart, France;2. Laboratoire Etude des Systèmes et de l’Environnement Thermique de l’Homme, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse, France;1. Candida Oancea Institute, Polytechnic University of Bucharest, Spl. Independentei 313, Bucharest 060042, Romania;2. Department of Hydraulic Machinery and Environmental Engineering, Polytechnic University of Bucharest, Spl. Independentei 313, Bucharest 060042, Romania;3. Romanian Academy, Calea Victoriei 125, Bucharest, Romania;1. Department of Mechanical Engineering, R L Jalappa Institute of Technology, Bangalore R, 561203, India;2. Department of Mechanical Engineering, Bangalore Institute of Technology, Bangalore, 560004, India;3. Department of Mechanical and Manufacturing Engineering, M S Ramaiah University of Applied Sciences, Bangalur, 560058, India;1. Department of Mechanical Engineering, Annamacharya Institute of Technology and Sciences (Autonomous), Rajampet 516126, Andhra Pradesh, India.;2. Department of Mechanical Engineering, Sree Vidyanikethan Engineering College (Autonomous), A Rangampet, Tirupati 517102, Andhra Pradesh, India.;1. Department of Estructuras de Edificación e Ingeniería del Terreno. Escuela Técnica Superior de Arquitectura. Universidad de Sevilla. Reina Mercedes 2. 41012. Spain;2. Department of Mecánica de Medios Continuos y Teoría de Estructuras. Escuela Politécnica Superior. Universidad de Sevilla. Virgen de África 7. 41011. Spain |
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| Abstract: | Vertically perforated bricks were developed with the view to building environmentally friendly houses since they make insulating materials unnecessary. Indeed, walls can be constructed without any other materials than clay and mortar. Furthermore, they offer better mechanical properties than horizontally perforated ones. However, heat transfer in this geometry, and particularly the influence of the assembly method, is not totally known. In this numerical study, we propose to verify that convection heat transfer is negligible in the perforations. This condition is necessary to increase the thermal resistance of the brick. We then show that a masonry bedded on several strips does not penalize the thermal performance of the wall. A particular study of the ruptures concludes that the convection present in these regions is a local phenomenon preferable to the thermal bridges caused by continuous mortar joints. |
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