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CAST Forum - From Mouldy Houses to Drying Timber
Dr Mark Dewsbury (School of Architecture & Design, UTAS) will briefly introduce the Centre for Architectural Science Tasmania (CAST). This will be followed by presentations by three current PhD candidates from the University of Tasmania.

PRESENTERS
David Rhys Tanton - drying processes and minimising discoloration of wood
Freya Su - climate data and its current relevance for hygrothermal simulation
Jack Tan - retrofitting buildings towards near net-zero goals

Aug 28, 2022 01:30 PM in Hobart

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Speakers

Dr Mark Dewsbury
Lecturer, School of Architecture and Design @University of Tasmania
Dr Mark Dewsbury is passionate about sustainable design of commercial and residential buildings. His research activities have included contract research for CSIRO, Federal and State Government Agencies, Forest & Wood Products Australia and industry collaborators. His research focuses on methods to improve the construction, thermal performance, energy use, IEQ and condensation risk analysis within and for Australian buildings
David Rhys Tanton
Doctoral candidate, School of Architecture & Design @University of Tasmania
Research description: Timber can be prone to defects induced by the drying process, such as warping, dimensional distortion, splitting/checking and discoloration. These defects are primarily introduced when drying occurs under non-ideal conditions. The purpose of this research is to utilize both rack survey data and hygrothermal software methods to understand and therefore predict the cause of several types of discoloration defects and establish ideal drying conditions for the mitigation or elimination of those defects.
Freya Su
Doctoral candidate, School of Architecture & Design @University of Tasmania
Research description: Climate change has prompted much need improvements in Australian residential building regulations, which now demand more insulation and airtightness. The main downside of these measures has resulted in the introduction of mould into our homes, even those that are brand new. Hygrothermal simulations that model the behaviour of water vapour in our buildings can guide decisions within the national building code to mitigate condensation and mould. This project has already shown that Australia's existing climate databases are unsuitable, resulting in erroneous simulation outputs. The El Nino Southern Oscillation (ENSO) has a greater impact in the Southern Hemisphere and climate change has increased storm frequency and severity. Both of these augment the volume of rain and extent of humidity, differentiating the South from climates in the Northern Hemisphere, where the existing climate data methodology was developed and validated over the last decades. Alternate climat
Jack Tan
Doctoral candidate, College of Science and Engineering (CoSE) @University of Tasmania
Research description: The research thesis explores design strategies for improving existing Australian houses towards near net-zero design of year 2030 to 2050, focusing on local and international Indoor Environmental Qualities (IEQ) standards and green rating tools, as well as Australia's Nationwide House Energy Rating Scheme (NatHERS) and whole-of-house bio-hygrothermal computer simulation software. The goal of the research is to inform Energy Efficiency and Health and Wellbeing design impacts on pre-2002 housing stock using timber construction systems in temperate climatic conditions.

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