Abstract
The subjects of heating and ventilating are very wide and their practical applications necessitate much detailed technical information. This is given very satisfactorily in the usual textbooks written for engineers. However, such books are apt to deal somewhat hastily with the theories upon which good practice should always be based. This applies especially to the subject of thermal comfort.
It is evident that large diversities of opinion are apparent when people are questioned concerning their feelings of warmth over quite a wide range of temperature. This has led some to state that it is better not to rely upon personal feelings of comfort in environmental investigations. The following brief introduction to thermal comfort endeavours to show not only that this is a mistaken notion but that the subjective factors of thermal comfort have been successfully assessed and correlated with the physical factors of the environment.
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