Abstract
This study deals with a programme of experimental studies on thermal comfort levels inside hawker centres in Singapore. Hawker centres in Singapore are large metal-roof structures having typical floor areas of 2000 m 2 and roof heights of about 5 m, and within which varieties of cooked food are sold. The experimental studies were conducted during typically hot days when the dry-bulb temperature was close to the daily maximum value of 30·4°C. Continuous measurements of the dry-bulb temperature, relative humidity, air movement, radiation from the metal roof and the thermal comfort index were carried out. Based upon the experimental results, measures for improving the comfort levels were recommended. An Equatorial Comfort Index was derived and an optimum value relevant to the environment of the hawker centres was established.
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