An analysis of absorbed solar radiation by domed and tilted roofs and comparision with flat roofs

Mehran, S.; Rod, M.; Jafar Kazemi, F.

doi:10.22061/tej.2008.1297

Document Type : Original Research Paper

Authors

¹ Mechanics, Department of Energy Conversion, Graduate School, Azad University, South Tehran Branch, Tehran, Iran

² Faculty member of Sharif University of Technology, Graduate School of Azad University, South Tehran Branch, Tehran, Iran

³ Graduate School, South Tehran Azad University, Tehran, Iran

https://doi.org/10.22061/tej.2008.1297

Abstract

Domed, tilted and flat roofs have a widly used in building construction industry. In this paper Thermal performance of roofs in regard with base state i.e. flat roof about its absorbed radiation and energy consuming was considered for different condition. The results show that roof's angle and sun's radiation effects on absorbed radiation of the sun than the roof. While domed roof is built. Of the half dome roof o 55 < q , roof so absorbed radiation of sun is almost equal to its homologous flat roof. Tilted roof with the south-north points/ facing absorbed even more sun heat than tilted roof with the east – west facing. Therefore, from absorbed radiation view, it is recommended to use tilted roof with east – west facing in summer. Also, if tilted roof is built of the slope angle 60 45 £ £ q , the energy consuming would be decreased to 1.041 to 1.3 equal to flat roof. In hot and damp regions, the temperature and diffuse of radiation has been greater. So, a tilted roof will be proper for such regions where as in hot arid regions, the diffuse of radiation has been less and domed roof is proper for such regions.

20.1001.1.20080441.1387.2.3.2.0

Main Subjects

Architecture

References

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Technology of Education Journal (TEJ)

An analysis of absorbed solar radiation by domed and tilted roofs and comparision with flat roofs

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Volume 2, Issue 3 - Serial Number 7
July 2008
Pages 149-158

An analysis of absorbed solar radiation by domed and tilted roofs and comparision with flat roofs

References

References

Send comment about this article

Volume 2, Issue 3 - Serial Number 7July 2008Pages 149-158

Volume 2, Issue 3 - Serial Number 7
July 2008
Pages 149-158