COMPARATIVE EVALUATION OF IAQ OF AN INDOOR CAFE AND ATRIUM CAFE

Abstract

Singaporeans lead a relatively hectic lifestyle, and for convenience, most of them will dine out. Hence, this study seeks to conduct a comparative evaluation of Indoor Air Quality (IAQ) between indoor and atrium café. Objective measurement showed that during peak occupancy period, the indoor café had 5 parameters – operative temperature, respirable particulate matter 10, air velocity and total viable bacteria count that did not meet the threshold stated in SS554: 2009. On the other hand, the results for atrium café showed that it had fulfilled the stipulated threshold stated in the standard. The results of subjective assessment showed that majority of the respondents finds that the overall IAQ at the indoor café is acceptable. However, there were a significant percentage who were dissatisfied with the overall IAQ. Contrary to the indoor café, majority of the respondents finds that the overall IAQ is acceptable and were generally satisfied. Maintenance policy for ACMV system is recommended to ensure cleaner and better air quality. Dilution is also recommended to purge contaminants out of the space. This is to ensure that the IAQ is conducive for the occupants’ health and thermal comfort.