Assessment of ozone generation in dry air fed silent discharge reactors

Abstract

Two equations have been derived in this paper for expecting the ozone generation inside dry air fed silent discharge reactors. The derived equations have been built on theories of the silent discharges and their applications, reported in the literature. The two equations have been investigated individually with experimental results for ozone generated by silent discharges in coaxial cylindrical reactors. The reactors were stressed with an ac voltage and fed by dry air flowing with constant rates at atmospheric pressure and room temperature. The results, that have been calculated by the two equations individually, have agreed with the experimental results over the whole range of the investigated parameters. Subsequently, the two derived equations represent suitable criteria for expecting the ozone concentration generated by silent discharges in dry air fed coaxial cylindrical reactors under any discharge conditions in range of the investigated parameters.

Positive direct current corona discharges in single wire-duct electrostatic precipitators

“…The solid curves in Figures 6-9 indicate the results that were calculated by using Equation (16). In general, the solid curves agree with the experimental results over range of the parameters that were studied experimentally.…”

“…This explains why the ozone concentration [O 3 ] decreases slowly along the high range of the corona current of I ≥ 0.001 A, when the magnitude of the air flow rate is in the range of Q ≥ 3.33 × 10 −5 m 3 /s, as shown in Figures 6-9. By introducing the corona current from Equation (10) into Equation (16), the ozone concentration generated inside the reactor as a function of the corona discharge parameters is given by the equation…”

“…14 The ozone is a strong oxidizing agent, and for this reason it is used over a wide range in many of the important industrial applications. 15,16 On the contrary, the ozone is a toxic gas to humans and animals, causes serious damage to the plant life, and produces damage in many materials. The dangerous effects for the ozone gas on health of humans are well recognized.…”

Characterization of surface dielectric barrier discharge influenced by intermediate frequency for ozone production

“…This can be explained by the independence of the deposited energy in the reactor at one period on the driven frequency, as described above. This is also attributed to the domination of the formation processes of ozone and the negligibility of the decomposition processes at a low energy density [45].…”

“…The catalytic effect of nitrogen oxides (NO-NO 2 ) in the plasma reactor, which consumes oxygen atoms and destructs ozone via the following two-cycle reactions [45]:…”