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THERMO-NEUTRALITY OF NON-AIRCONDITIONED BUILDING OCCUPANTS IN SINGAPORE
LEOW KIM GUAN
LEOW KIM GUAN
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Abstract
Applying the concepts and methods developed in
advanced countries, this academic exercise attempts to
determine the thermo-neutrality of non-airconditioned
building occupants in Singapore. Three methods were
applied to determine the thermo-neutrality: probit
analysis, regression analysis and rational comfort indices.
A one-month long thermal comfort survey was
conducted in blocks of Housing Development Board flats
during August. Five hundred and eighty-three respondents
were interviewed and their subjective judgements on the
thermal environment, together with their clothing
insulation and level of metabolic heat production, and the
climatic elements, were recorded.
By probit analysis, thermo-neutrality was
calculated as 28.5°C in operative temperature. This value
is considered the 'true' neutral temperature due to the
superiority of the technique in determining non-linear
relationship between variables. Regression analysis, the
use of which is restricted by the linearity assumption,
gave the operative temperature as 28.4°C. The negligible
difference between the thermo-neutralities given by these
two statistical techniques lends confidence to the use of
regression equation for predicting thermal sensation
votes.
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Date
1988
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Type
Thesis