B075 Occupant screening IAQ

Screening parameter of occupant acceptability for indoor air quality assessments: a case Study in air-conditioned offices of Hong Kong

Brief:

This study proposes a screening process for air-conditioned office environmental health regarding the likelihoods of unsatisfactory IAQ. The screening process will enhance an effective IAQ monitoring and assessment strategy for making a better diagnosis. In particular, the occupant acceptance of CO₂ concentrations is used as a screening parameter and correlated to the unsatisfactory IAQ in 422 assessed offices in Hong Kong. It is reported that an increased likelihood ratio between the range of 0.5 and 6 is associated with decreased occupant acceptability in the reported range between 83% and 92% with a mathematical expression proposed. It is showed that at the prevalence of IAQ dissatisfaction of 15% for air-conditioned offices in Hong Kong in the period 1998-2001 as the per-assessment probability, a sample office assessed with 85% occupant acceptability given a likelihood ratio of 2 has the post assessment probability of 0.26. This paper presents a useful reference for IAQ assessment in air-conditioned offices.

Further Information:

Wong LT, Mui KW, Yuen WW, 2009. Screening parameter of occupant acceptability for indoor air quality assessments: a case Study in air-conditioned offices of Hong Kong, International Conference on intelligent systems, structures and facilities (ISSF2009), 13 Jan, Kowloon Shangri- la Hotel, Hong Kong, pp. 7/1-7/5.