Abstract
Threshold values of breeze were found in a ventilated room in summer by supposing that the probability of wind velocity which exceeds threshold value is equal to the ratio of the time when wind is sensed.The results were following. (1)The threshold values were nearly in propotion to the mean velocities when air-conditioner running and opened, but the correlation was poorer when natural-ventilated. (2)ffhen natural-ventilated, as coefficient of variance of velocity increased 10% threshold value decreased about 0.02(m/s), which agreed with Kubota(1979)'s result in summer. (3)Mean wind velocity when sensings start and mean when sensings end in a vote had correlations to the mean velocity except for mean of the starts when natural-ventilated. (4)The cumulative distribution function of indoor wind velocity could be approximated by ffeibull distribution except when natural-ventilated.
