Double skin facades (DSFs) are building envelopes comprised of two glass facades, a ventilated air cavity and shading devices placed within the cavity. In this paper airflow and heat transfer simulation was conducted for a DSF system equipped with a venetian blind using computational fluid dynamics (CFD) with RNG turbulence model. Simulation was done for a three-level combination of slat tilt angle and blind position. The heat transfer coefficient was directly obtained from CFD simulation. The CFD prediction was validated using experimental data collected for a mechanically ventilated DSF (1.6 m wide and 2.5 m high and 0.15 m wide cavity) equipped with venetian blinds. The present study indicates that the presence of venetian blinds influences the surface heat transfer coefficients (SHTCs), the temperature and the air distribution in the DSF system. Specifically, for the cases considered, the position of the blinds is more important than the slat angles.
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2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4943-9
PROCEEDINGS PAPER
Airflow and Heat Transfer in Sustainable Building Components: Double-Skin Facades
Teshome E. Jiru
,
Teshome E. Jiru
Florida International University, Miami, FL
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Yong X. Tao
,
Yong X. Tao
Florida International University, Miami, FL
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Fariborz Haghighat
Fariborz Haghighat
Concordia University, Montreal, QC, Canada
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Teshome E. Jiru
Florida International University, Miami, FL
Yong X. Tao
Florida International University, Miami, FL
Fariborz Haghighat
Concordia University, Montreal, QC, Canada
Paper No:
IHTC14-23017, pp. 93-100; 8 pages
Published Online:
March 1, 2011
Citation
Jiru, TE, Tao, YX, & Haghighat, F. "Airflow and Heat Transfer in Sustainable Building Components: Double-Skin Facades." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 8. Washington, DC, USA. August 8–13, 2010. pp. 93-100. ASME. https://doi.org/10.1115/IHTC14-23017
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