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Results from the simulated use of mass-timber construction to improve the thermal performance of lightweight residential buildings in Australia


Dewsbury, Mark A and Tooker, Maxim and Fay, Roger, Results from the simulated use of mass-timber construction to improve the thermal performance of lightweight residential buildings in Australia, Cutting Edge: 47th International Conference of the Architectural Science Association, 13-16 November 2013, Hong Kong, China, pp. 569-578. ISBN 9780992383503 (2013) [Refereed Conference Paper]

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Copyright 2013 The Architectual Science Association (ANZAScA)

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Since Australia’s acknowledgement of climate change and its need to reduce greenhouse gas emitting activities, the national con-struction regulations have included residential thermal performance requirements. The improvement from no thermal performance regula-tion to the 5 Star minimum requirements could be met by increasing levels of floor, wall and ceiling insulation and improved glazing. However, the improvements required to achieve 6 Stars or more, may require the careful consideration of the type and placement of thermal capacitance. Traditionally, the materials selected to provide thermal capacitance include clay brick and concrete-based products. However, these are massive materials and have a relatively high embodied ener-gy. The use of mass-timber products within the built fabric may pro-vide improved thermal performance for a relatively small increase in embodied energy but also may significantly improve long-term carbon sequestration. This paper tests this hypothesis. House energy rating simulations were completed for 28 house plans located within two Australian climates. A comparative analysis of simulated heating and cooling requirements, embodied energy and carbon sequestration ex-amined the relative differences between the clay brick, concrete and mass-timber variations. In most cases the mass-timber systems pro-vided improved thermal performance, minor increases to embodied energy and significant increases in carbon sequestration.

Item Details

Item Type:Refereed Conference Paper
Keywords:mass-timber, thermal capacitance, house energy rating
Research Division:Built Environment and Design
Research Group:Building
Research Field:Building information modelling and management
Objective Division:Construction
Objective Group:Construction materials performance and processes
Objective Field:Construction materials performance and processes not elsewhere classified
UTAS Author:Dewsbury, Mark A (Dr Mark Dewsbury)
UTAS Author:Tooker, Maxim (Mr Maxim Tooker)
UTAS Author:Fay, Roger (Professor Roger Fay)
ID Code:89528
Year Published:2013
Deposited By:Architecture
Deposited On:2014-03-06
Last Modified:2014-08-08
Downloads:3 View Download Statistics

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