Abstract
The purpose of this study is to propose new environmental standards by reflecting the combined effect of temperature and noise stress on the human state of mind. Twenty-three female students were exposed to twenty combined conditions involving four hotter temperature levels and five noise levels in summer, and twenty-one of them were also exposed to combined four lower temperature levels and similar five nose levels in winter. The subjects reported their sensations regarding each combined condition. The equi-comfort and equi-acceptance charts for respective seasons and exposure periods were derived on the basis of the results. The contour lines of the equal universal comfort and acceptance sensations, respectively, were drawn in the charts with temperature and noise levels on the axes. These two kinds of charts can indicate the combined conditions which would be acceptable but not comfortable, as well as the grades of human comfortableness and acceptableness by themselves within this experimental condition.
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