PREDICCIÓN DE LA REDUCCIÓN DEL IMPACTO TÉRMICO EN UN EDIFICIO CON DOBLE PARED
Main Article Content
Abstract
At Santa Fe de la Vera Cruz city, Argentina, a building that includes elements of sustainable architecture, energy efficiency and comfort based on the use of natural resources is built. Particularly, a double facade design on the front walls is meant to achieve an air chamber that prevents heat transfer from the outside to the inside in summer and vice versa in winter.
In This work, a numerical study is presented for the evaluation of the thermal performance of a cavity (air chamber) interposed in a double facade of the building for different climatic conditions, considering two air chambers alternatives: connected and non connected to the outside. Both cases are energetically compared with the standard facade design without chamber.
The results show that for summer conditions, a chamber connected to the outside would be the most efficient design, while for winter, the closed cavity is the best saving-energy alternative.
In This work, a numerical study is presented for the evaluation of the thermal performance of a cavity (air chamber) interposed in a double facade of the building for different climatic conditions, considering two air chambers alternatives: connected and non connected to the outside. Both cases are energetically compared with the standard facade design without chamber.
The results show that for summer conditions, a chamber connected to the outside would be the most efficient design, while for winter, the closed cavity is the best saving-energy alternative.
Keywords
References
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[3] H. Asan and L. Namli, “Laminar natural convection in a pitched roof of triangular cross-section: summer day boundary conditions,” Energy and Buildings, vol. 33, no. 1, pp. 69–73, 2000. doi: https://doi.org/10.1016/S0378-7788(00)00066-9.
[4] H. F. Oztop, Y. Varol, and A. Koca, “Laminar natural convection heat transfer in a shed roof with or without eave for summer season,” Applied Thermal Engineering, vol. 27, no. 13, pp. 2252 –2265, 2007. doi: https://doi.org/10.1016/j.applthermaleng.2007.01.018.
[5] A. Brondino, M. E. Berli, and J. Di Paolo, “Aislación térmica producida por cavidades de aire. análisis de un techo con geometría simplificada y flujo turbulento,” in V Congreso Argentino de Ingeniería Química, Santiago del Estero, Argentina., 2016. [Online]. Available: https://goo.gl/2bVmLv
[6] C. Ghiaus, F. Allard, M. Santamouris, C. Georgakis, and F. Nicol, “Urban environment influence on natural ventilation potential,” Building and Environment, vol. 41, no. 4, pp. 395–406, 2006. doi: https://doi.org/10.1016/j.buildenv.2005.02.003.
[7] S. Wang, Z. Shen, and L. Gu, “Numerical simulation of buoyancy-driven turbulent ventilation in attic space under winter conditions,” Energy and Buildings, vol. 47, pp. 360–368, 2012. doi: https://doi.org/10.1016/j.enbuild.2011.12.012.
[8] M. E. Berli, J. Di Paolo, and F. A. Saita, “Mecánica de fluidos computacional aplicada al diseño térmico pasivo de techos,” in I Congreso Argentino de Ingeniería Mecánica, Bahía Blanca, Argentina, 2008.
[9] ——, “Heat transfer on a naturally crossdriven ventilated triangular cavity with openings,” Journal of Physics: Conference Series, vol. 166, no. 1, pp. 1–10, 2009. doi: http://doi.org/10.1088/1742-6596/166/1/012019.
[10] A. Bejan, Convection Heat Transfer, Fourth Edition, I. John Wiley & Sons, Ed., 2013. doi: http://doi.org/10.1002/9781118671627.