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Experimental study on thermal performance of improved open-web roofs with induced ventilation

Experimental study on thermal performance of improved open-web roofs with induced ventilation

Xiao, Nan, Chen, Hua Peng, Sun, Liqiang and Wang, Xiang (2011) Experimental study on thermal performance of improved open-web roofs with induced ventilation. In: 2011 International Conference on Multimedia Technology, ICMT 2011. IEEE Computer Society, Piscataway, USA, 6398 -6401. ISBN 9781612847719 (doi:https://doi.org/10.1109/ICMT.2011.6002740)

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Abstract

The double layer open-web roof structure is a type of heat preservation and insulation roof structures, in particular suitable for medium and large span roof structures. However, the construction procedures for traditional open-web roof structures are rather complicated because of the built-in molds in the cavity. On the other hand, passive ventilation is an effective route to enhance the thermal performance of the building envelope. In this paper, an improved open-web roof structure is presented. The steel tube shear connectors are employed to replace the tubby reinforced concrete shear connectors. The adopted shear connectors have small holes in the middle part of their heights. This improvement not only simplifies the construction procedures, but also enhances the thermal performance for open-web roof structures. In order to verify the effectiveness of proposed new open-web roofs, experiments with temperature measurements were performed for a real roof structure. The measured results show that nearly half of the heat flow is drawn out from the cavity due to the induced ventilation. The proposed new open-web roofs have significant improvement and effectiveness on thermal performances, when comparing with traditional open-web roof structures

Item Type: Conference Proceedings
Title of Proceedings: 2011 International Conference on Multimedia Technology, ICMT 2011
Additional Information: This paper forms part of the published proceedings from 2nd International Conference on Multimedia Technology, ICMT 2011 held on July 26, 2011 - July 28, 2011 at Hangzhou, China
Uncontrolled Keywords: building envelopes, construction procedures, double layers, experimental studies, heat preservation, induced ventilation, large span roof structures, measured results, Passive ventilation, roof structures, shear connector, small hole, steel tube, thermal performance
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Pre-2014 Departments: School of Engineering
School of Engineering > Department of Civil Engineering
Related URLs:
Last Modified: 13 Dec 2019 11:13
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
Selected for REF2021: None
URI: http://gala.gre.ac.uk/id/eprint/7405

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