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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 31181

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Enhancing Thermal Efficiency of Double Skin Façade Buildings in Semi-Arid Climate
There is a great deal of interest in constructing Double Skin Facade (DSF) structures which are considered as modern movement in field of Energy Conservation, renewable energies, and Architecture design. This trend provides many conclusive alternatives which are frequently associated with sustainable building. In this paper a building with Double Skin Facade is considered in the semiarid climate of Tehran, Iran, in order to consider the DSF-s performance during hot seasons. Mathematical formulations calculate solar heat gain by the external skin. Moreover, Computational Fluid Dynamics (CFD) simulations were performed on the case study building to enhance effectiveness of the facade. The conclusion divulged difference of gained energy by the cavity and room with and without blind and louvers. Some solutions were introduced to surge the performance of natural ventilation by plunging the cooling loads in summer.
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[1] Shahrokh Farzam and Giuliano Todesco, American Society of Heating, Refrigerating, Air-conditioning Engineers (ASHRAE) Journal (, January 2010.
[2] Ray Sinclair, Duncan Phillips, and Vadim Mezhibovski, American Society of Heating, Refrigerating and Air- Conditioning Engineers, April 2009.
[3] Ali Fallahi, Fariborz Haghighat , Hafia Elsadi, Energy performance assessment of double-skin facade with thermal mass, Energy and Buildings, 42 (2010) 1499-1509.
[4] A. Guardo, M. Coussirat, C. Valero, E. Egusquiza, P. Alavedra, CFD assessment of the performance of lateral ventilation in Double Glazed Facades in Mediterranean climates, Energy and Buildings 43 (2011) 2539-2547.
[5] Dr. Mohammad Javad Saghafi, Dr. Morteza Asadi Khalaji, Razieh Pouyandeh, Architecture publication, Optimized slope of solar heat gain in caparision with building-s south face in Tehran, Tehran University, January 2011(in persian).
[6] NIST Technical Note 1618, Daniel Madrzykowski and Stephen Kerber, National Institute of Standards and Technology.
[7] Double Skin Façade, literature review, A report of IEA SHC Task 34 ECBCS Annex 43, 2006, Lund University, Lund Institute of Technology
[8] Natural Ventilation Lecture 2 (http:/ / www. arch. hku. hk/ teaching/ lectures/ air vent/ sect02. htm)
[9] Natural Ventilation Lecture 3 (http:/ / www. arch. hku. hk/ teaching/ lectures/ air vent/ sect03. htm)
[10] N. Hashemi, R. Fayaz, M. Sarshar, Thermal behaviour of a ventilated double skin facade in hot arid climate, Energy and Buildings 42 (2010) 1823-1832.
[11] Double Skin Facades - Literature Review, Harris Poirazis and Department of Architecture and Built Environment, Division of Energy and Building Design, Lund Institute of Technology, Lund 2006.
[12] Natural Light and sunlight Book, (
[13] Venus glass Company catalogue, (http://
[14] O. Nematollahi , P. Alamdari and A. A. Alemrajabi, Monthly Mean Clearness Index for Few Iranian Cities, SET2011, 10th International Conference on Sustainable Energy Technologies, İstanbul, TÜRKİYE.
[15] Parisa Doraj, M. Dehban, Solar energy in contemporary Iranian constructions, 5th Symposum on Advances in Science & Technology.
[16] John A. Duffie, William A. Beckman, Solar Engineering of Thermal Processes Book, Third Edition, John Wiley & Sons, published 2006.
[17] Neveen Hamza, Abdalla Gomaa, Chris Underwood, Daylighting and thermal analysis of an obstructed double skin façade in hot arid areas, Proceedings of Clima 2007 WellBeing Indoors.
[18] Mauricio Hernandez Tasc├│n, Thesis submitted to the University of Nottingham for the degree of Doctor of Philosophy, Experimental and Computational of Thermal Performance and Overheating in Double Skin Facades.
[19] N. Mingotti, T. Chenvidyakarn, A. W. Woods, The fluid mechanics of the natural ventilation of an arrow-cavity double-skin façade, Building and Environment 46 (2011) 807-823.
[20] M.A. Shameria, M.A. Alghoulb, K. Sopianb, M. F. M. Zaina, O. Elayebb, Perspectives of double skin facade systems in buildings and energy saving, Renewable and Sustainable Energy Reviews 15 (2011) 1468-1475.
[21] H. Seok, J. Jo, K. Kim, Establishing the Design Process of Double-Skin Façade Elements through Design Parameter Analysis, Journal of Asian Architecture and Building Engineering 8 (2009) 251-258.
[22] A.L.S. Chan, T.T. Chow, K.F. Fong, Z. Lin, Investigation on energy performance of double skin facade in Hong Kong, Energy and Buildings 41 (2009) 1135-1142.
[23] Natural Ventilation, Andy Walker, National Renewable Energy Laboratory (http:/ / www. wbdg. org/ resources/ natural ventilation. php)
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