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Title: Diagnostics of unsatisfactory indoor air quality in air-conditioned workplaces
Authors: Mui, KW 
Hui, PS
Wong, LT 
Issue Date: 1-Jun-2011
Source: Indoor and built environment, 1 June 2011, v. 20, no. 3, p. 313-320
Abstract: This study examines a screening process for environmental diagnosis of indoor air quality (IAQ) problems in air-conditioned office buildings. Diagnosis of IAQ problems in relation to complaints of environmental health effects has not been identified as a precise science and this paper proposes an evaluation tool to address this need. An "IAQ index", the average fractional dose of a set of three representative indoor pollutants, has been developed for this purpose, to be used as a screening parameter for detecting the unsatisfactory factors affecting the IAQ in an air-conditioned office. The wide-ranging set of prescribed IAQ measurements for these investigations can be prohibitive due to complexity, cost and time period taken to obtain results. In this study, a 5-level screening strategy based on the IAQ index to quantify the likelihood of unsatisfactory IAQ in air-conditioned workplaces is being proposed. The proposed assessment tool would be a useful protocol for policymakers and professionals to evaluate the relative environmental performance of office spaces and to investigate any IAQ problem. A proposed set of three measurements are used to inform decision whether to take any further action (more measurements or remedial measures) to allow early diagnosis of IAQ problems in air-conditioned offices to satisfy existing Hong Kong IAQ standards.
Keywords: Environmental diagnosis
IAQ index
Indoor air quality
Likelihood ratios
Representative pollutants
Screening test
Publisher: SAGE Publications
Journal: Indoor and built environment 
ISSN: 1420-326X
EISSN: 1423-0070
DOI: 10.1177/1420326X11400880
Rights: This is the accepted version of the publication Mui KW, (Hui PS), Wong LT., Diagnostics of unsatisfactory indoor air quality in air conditioned workplaces, Indoor Built and Environment (Volume 20 and issue 3) pp. 313-320. Copyright © 2016 (The Author(s)). DOI: 10.1177/1420326X11400880.
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