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Characterising indoor air temperature and humidity in Australian homes

Harrington, L W, Aye, L and Fuller, R J 2015, Characterising indoor air temperature and humidity in Australian homes, Air quality and climate change, vol. 49, no. 4, pp. 21-29.

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Title Characterising indoor air temperature and humidity in Australian homes
Author(s) Harrington, L W
Aye, L
Fuller, R J
Journal name Air quality and climate change
Volume number 49
Issue number 4
Start page 21
End page 29
Total pages 9
Publisher Clean Air Society of Australia & New Zealand
Place of publication Melbourne, Vic.
Publication date 2015-11
Keyword(s) vehicle emissions
tunnel validation
traffic impact
Summary Information about indoor air temperatures in residential buildings is of interest for a range of reasons, e.g. the health and comfort of occupants, energy demand for space heating and cooling. To date there have been few long term studies that measure and characterise indoor air temperatures in Australian homes. New primary research undertaken by the authors measured temperatures in 273 homes over the period 2011 to 2014 in seven climate zones, from Melbourne in the south to Cairns in the north of Australia. Humidity data was also collected in 20 homes. This paper is a description of the data collected and the subsequent analysis.

Indoor temperatures were compared with outdoor temperatures and a mathematical model was fitted to the data. In general, monthly average indoor temperatures were found to be 2 degreesC higher than monthly average outdoor temperatures, apart from periods with consistently cold weather, where the monthly average outdoor temperature was less than 20 degreesC, which were found to have larger differences. The indoor temperature model developed has been compared with data measured by the Commonwealth Scientific and Industrial Research Organisation (CSIRO) in 438 homes in three Australian cities. The model developed using project measurements are highly consistent with the CSIRO data.

Further data collection compared indoor and outdoor humidity in 20 houses in Sydney and Melbourne. The indoor humidity ratio was found to be, on average, slightly higher than outdoors, but indoor levels generally track outdoor levels quite closely. This is likely due to the high air exchange rate in most houses.
Language eng
Field of Research 050206 Environmental Monitoring
Socio Economic Objective 970112 Expanding Knowledge in Built Environment and Design
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Clean Air Society of Australia & New Zealand
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Document type: Journal Article
Collections: School of Architecture and Built Environment
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