Abstract
The results of about 70 measurements of smoke plume rise from industrial chimneys are described. The experimental technique was as follows: The smoke plume was photographed repeatedly from a small aeroplane during a period of about 1 hr. The mean plume rise was evaluated at fixed distances from the source using several photographs taken during the test. A survey and a comparison are given of the various very different methods which have previously been used for measuring plume rise. When plotting all available plume rise data measured at fixed distances and a sampling period of 1 2 –1 hr. against chimney gas heat emission significant regression lines are obtained. The scatter of the points is large but this representation is useful for a first general estimation of plume rise.
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