Abstract
ABSTRACTThis paper reports the ozone generation in pulsed multichannel dielectric barrier discharge. The influence of nitrogen addition (0.1%–10%) on ozone concentration and ozone generation efficiency in nitrogen–oxygen gas mixtures is studied. Results show that adding 0.1% N2 would not seriously increase the ozone production. Meanwhile, 1% N2 content exhibits the highest ozone production efficiency in low SIE (J/L, defined as the ratio of power to gas flow rate) region (0–200 J/L) while adding 0.3% N2 would lead to the highest ozone generation efficiency in high SIE region (300–800 J/L). The increase of ozone production induced by N2 addition is more significant in low SIE region compared with that in high SIE region. At 100 J/L, ozone production efficiency increases 26.9% to 201.6 g/kWh with 1% N2 addition when compared with that in oxygen. At 18 J/L, the observed maximum ozone generation efficiency reaches 252 g/kWh at 1.3 g/Nm3 with 1% N2 addition. An increase of ozone production can be obtained with 0.3%–2% N2 addition in all explored SIE ranges.
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