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Super insulated aerogel windows: Impact on daylighting and thermal performance

Garnier, C.; Muneer, T.; McCauley, L.

Authors

C. Garnier

L. McCauley



Abstract

Window design plays an important role in achieving energy efficient buildings and in providing thermal comfort of building occupants. This paper investigates a newly developed aerogel window and the potential improvement on the comfort factors of an office in relation to daylighting. Improved comfort levels can impact on health and wellbeing of building occupants leading to knock on effects on absenteeism and productivity. A simulation tool was presently created that will easily enable comparison of different façade design and their impact on heat and light transmission and therefore enable optimisation. One of the most important aspects of the present work was comparing the performance of the newly developed aerogel window against the more traditional Argon-filled, coated double-glazing. Whereas the aerogel window provided an extremely low heat-loss index of 0.3 W/m2K, the latter usually offered a centre-glazing U-value of 1.4 W/m2K. On a like-with-like basis the daylight transmission of the aerogel window was significantly lower than double-glazing. However, in view of low thermal loss larger areas of the former can be deployed. This article presents the influence of three key parameters that may lead to an optimum design: daylight, thermal loss and solar gain.

Journal Article Type Article
Acceptance Date Aug 11, 2015
Online Publication Date Aug 14, 2015
Publication Date 2015-12
Deposit Date Oct 22, 2015
Journal Building and Environment
Print ISSN 0360-1323
Electronic ISSN 1873-684X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 94
Pages 231-238
DOI https://doi.org/10.1016/j.buildenv.2015.08.009
Keywords Aerogel windows; Daylighting; Solar gain;
Public URL http://researchrepository.napier.ac.uk/id/eprint/9200
Publisher URL http://dx.doi.org/10.1016/j.buildenv.2015.08.009