Abstract
Ozone production capacity of the low pressure mercury vapor quartz lamp was measured in order to design industrial equipments for photo oxidation processes.
The lamp used in the experiments was made from conventional quartz tube. A main spectral line is 253.7 nm in cylinder shaped 8 W lamps. Supplying air into an annular space of a double pipe structure, author examined the relation betwwen the concentration of ozone produced and gas flow rate (0.025-10 l/min). In the measurement the exposing length of the lamp was changed (2.5-105 mm), keeping the width of the annular space constant.
Here, author obtained the relative formula between supplied gas quantity and the concentration of ozone produced on the log-paper.
The ozone concentration increased with gas flow rate in the low rate range. However, it became in inverse proportion in the range of high gas flow rate. That is, a reversing zone of concentration was found in the experiments.
