Field trialling of a new airtightness tester in a range of UK homes

Cooper, Edward and Zheng, Xiaofeng and Wood, Christopher J. and Gillott, Mark C. and Tetlow, David and Riffat, Saffa and De Simon, Lia (2016) Field trialling of a new airtightness tester in a range of UK homes. International Journal of Ventilation . ISSN 2044-4044

[img]
Preview
PDF (Accepted manuscript) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview

Abstract

A low pressure ‘quasi-steady’ pulse technique for determining the airtightness of buildings has been developed and compared with the standard blower-door technique for field-testing a range of UK homes. The reported low pressure air pulse unit (APU) for determining the airtightness of buildings, through several development stages related to optimizing the algorithm, pressure reference and system construction, has been trialled under various testing and environmental conditions to assess its repeatability and accuracy. The houses, representative of the UK housing stock, mostly have high levels of air leakage; resulting in poor energy performance and imbalanced indoor environments. The results of the pulse techniques are also compared with the standard blower door technique. A comparison between the results obtained using the two techniques is presented, which indicates that the pulse technique is reliable for determining building leakage at low pressure. Repeatability of consecutive tests in identical conditions is found to be within ± 5% of the mean, and within ± 8% when tested under different environment conditions. It has also been shown that the correct tank/valve combination is necessary to achieve the required quasi-steady flow. Tests for accuracy using the addition of known openings have been conducted and shown that uncertainties are hard to eliminate for a clean comparison when testing conditions are not controlled.

Item Type: Article
Keywords: Airtightness, building leakage, blower-door, pulse test, steady pressurisation, transient
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Architecture and Built Environment
Identification Number: 10.1080/14733315.2016.1252155
Depositing User: Zheng, Xiaofeng
Date Deposited: 08 Mar 2017 13:12
Last Modified: 24 Nov 2017 13:13
URI: http://eprints.nottingham.ac.uk/id/eprint/37428

Actions (Archive Staff Only)

Edit View Edit View