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Buildings 2017, 7(1), 13; doi:10.3390/buildings7010013

The Effectiveness of Thermal Insulation in Lightweight Steel-Framed Walls with Respect to Its Position

ISISE, Department of Civil Engineering, University of Coimbra, Coimbra 3030-788, Portugal
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Academic Editor: Ambrose Dodoo
Received: 15 December 2016 / Revised: 7 February 2017 / Accepted: 14 February 2017 / Published: 16 February 2017
(This article belongs to the Special Issue Insulation Materials for Residential Buildings)
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Abstract

Lightweight steel-framed (LSF) construction, given its advantages, has the potential to reach high standards in energy and environmental performance of buildings, such as nearly zero-energy buildings (nZEB). When compared with traditional construction, LSF system offers distinct benefits in such fields as sustainability, cost-effectiveness, constructive process, and safety at work. Despite the benefits of this constructive system, the effect of thermal bridges in LSF elements, caused by the high thermal conductivity of the steel structure, can be a disadvantage. The excessive heat losses or gains through these thermal bridges are more relevant in buildings’ exterior envelope, such as facade walls. These building components’ thermal performance is crucial in the buildings’ overall energetic behaviour, with a direct impact on energy consumption and resulting monetary costs during their operational stage. In this work the influence of the thermal insulation position on its effectiveness is evaluated in LSF facade walls. For this purpose, several LSF wall types are assessed, namely cold, warm, and hybrid construction. The influence of thermal bridges instigated by the steel studs in the LSF walls’ overall thermal performance is evaluated as well. The computations are performed using specialized finite element software (THERM). View Full-Text
Keywords: lightweight steel-framed; LSF; thermal performance; thermal bridges; insulation effectiveness; energy efficiency lightweight steel-framed; LSF; thermal performance; thermal bridges; insulation effectiveness; energy efficiency
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Roque, E.; Santos, P. The Effectiveness of Thermal Insulation in Lightweight Steel-Framed Walls with Respect to Its Position. Buildings 2017, 7, 13.

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