Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/220176
Title: EFFECTS OF VENTILATION RATES ON ASTHMATICS
Authors: TAN SUXIAN
Keywords: Building
Issue Date: 3-Jun-2009
Citation: TAN SUXIAN (2009-06-03T09:26:35Z). EFFECTS OF VENTILATION RATES ON ASTHMATICS. ScholarBank@NUS Repository.
Abstract: The effects of ventilation on productivity and health of office workers could be accentuated for people who are suffering from asthmatics, therefore, this dissertation aims to find out how perception of the indoor air quality, neurobehavioral responses, level of arousal as indicated by the levels of cortisol, and duration of exposure to different ventilation rates could elevate asthmatics’ ability to concentrate. An office study was carried out in a field environmental study chamber and both subjective and objective measurements were taken under conditions of two ventilation rates – 6 and 12 L/s/person. Thirty asthmatic subjects were chosen to participate in this study. Data from selected questions of the survey as well as performance for the concentration and arousal task was analyzed to find out the time effects of ventilation on these subjects. The results indicated that perceived air quality improved by over 20% when the ventilation rate was 12L/s/p as compared 6L/s/p. As such, a trend of reduction in neurobehavioral symptoms was noted in the later part of the experiment session. Arousal and concentration level as indicated by the speed in performance was found to have increased at long term exposure to high ventilation as well. Cortisol levels were found to be negatively correlated to rate of arousal; however, cortisol did not appear to be affected by different ventilation rates. A plausible correlation was found between perceived air quality, neurobehavioral responses, arousal and concentration.
URI: https://scholarbank.nus.edu.sg/handle/10635/220176
Appears in Collections:Bachelor's Theses

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