Nano-porous silica-aerogel-incorporated composite materials for thermal-energy-efficient pitched roof in the tropical region
Silica aerogel possesses an ultra-low thermal conductivity by virtue of its nano-structure. Owing to the fragility of monolithic aerogel, the development and production of aerogel-based insulation materials involve the incorporation of granular aerogel with other materials to form composite material...
| Main Authors: | Ismail, F.I., Farhan, S.A., Shafiq, N., Husna, N., Sharif, M.T., Affan, S.U., Veerasenan, A.K. |
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| Format: | Article |
| Institution: | Universiti Teknologi Petronas |
| Record Id / ISBN-0: | utp-eprints.23903 / |
| Published: |
MDPI AG
2021
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| Online Access: |
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85109806553&doi=10.3390%2fapp11136081&partnerID=40&md5=3ed20ebd70e90e08dd3d10ae6e19dd42 http://eprints.utp.edu.my/23903/ |
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| Summary: |
Silica aerogel possesses an ultra-low thermal conductivity by virtue of its nano-structure. Owing to the fragility of monolithic aerogel, the development and production of aerogel-based insulation materials involve the incorporation of granular aerogel with other materials to form composite materials. In the present study, the application of silica-aerogel-incorporated composite cement paste as render on the roof-top surface is coupled with the installation of a novel silica-aerogel-incorporated composite insulation board below the roof tiles. Control and silica-aerogel-incorporated samples of the composite cement paste and insulation were prepared. Thermal conductivity and strength tests were performed on the samples. A simulation study was performed on a Building Information Model subjected to a tropical climate to project the resultant impact of the cement render coupled with the insulation board on the thermal-energy-efficiency of the roof. For optimization of thermal and strength performances, silica aerogel contents of 4 wt. and 3 wt. were selected for the cement render and insulation board, respectively. The projected annual cooling load and energy savings revealed that the application of a 20-mm cement render, coupled with the installation of a 100-mm thick insulation board, is recommended as the optimum roof configuration. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
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