室内気候の快適性に関する実験的研究

抄録

This experimental study has been carried out as a part of "the Study on Improvement of Environmental Conditions for Office Rooms" undertaken as a two-year plan by a research group organized under Dr. Hirayama. The achievements of Yaglou, etc. in their laboratory works on the relation of comfort with human sensation of warmth are quite well known to us ever since. However, in the actual application of their comfort chart, we have some questions such as: - (a) The influence of temperature difference between the air and walls is not implied. (b) Their chart being based on normal clothing, there remains some doubt in its application to the case of summer clothing. (c) Procedure of statistic analysis was not rendered. (d) The possible discrepancy in case of Japanese people has not been clear. In order to supplement with such informations as above, and at the same time to solve relevant questions such as cooling limit in summer air conditioning, etc., we carried out the experiments in 1961 and 1962, and this report is chiefly based on that in the summer of 1962 over a total period of three weeks on the total number of subjects of about 180 mostly consisting of university students. The statistic analysis of the results obtained has proved that the comfort percentages follow a pair of normal distribution curves, through linear transformation, of two different values of standard deviations applied to each side of the optimum line, respectively. When statistic variance is accounted, 50% level of comfort band extends from 19.7℃ to 23.8℃ of corrected effective temperature with the optimum line of 21.2℃ but 75% level only covers a narrow band of 1.6℃ from 20.6℃ to 22.2℃, and the lower limit of this optimum band may safely be taken as the cooling limit in ordinary summer air conditioning.