Numerical investigation on the effect of gas parameters on ozone generation in pulsed dielectric barrier discharge

Linsheng WEI(魏林生); Xin LIANG (梁馨); Yafang ZHANG (章亚芳)

doi:10.1088/2058-6272/aadca6

Plasma Science and Technology > 2018 > 20(12): 125505. > DOI: 10.1088/2058-6272/aadca6

Linsheng WEI(魏林生), Xin LIANG (梁馨), Yafang ZHANG (章亚芳). Numerical investigation on the effect of gas parameters on ozone generation in pulsed dielectric barrier discharge[J]. Plasma Science and Technology, 2018, 20(12): 125505. DOI: 10.1088/2058-6272/aadca6

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Numerical investigation on the effect of gas parameters on ozone generation in pulsed dielectric barrier discharge

School of Resources Environmental & Chemical Engineering, Nanchang University, Nanchang 330031, People’s Republic of China

Funds: This work is supported by National Natural Science Foundation of China (Nos. 51867018 and 51366012) and Natural Science Foundation for Distinguished Young Scholars of Jiangxi Province, China (No. 2018ACB21011).

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Received Date: May 07, 2018

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Abstract

Abstract

Pulsed dielectric barrier discharge is a promising technology for ozone generation and is drawing increasing interest. To overcome the drawback of experimental investigation, a kinetic model is applied to numerically investigate the effect of gas parameters including inlet gas temperature, gas pressure, and gas flow rate on ozone generation using pulsed dielectric barrier discharge. The results show that ozone concentration and ozone yield increase with decreasing inlet gas temperature, gas pressure, and gas flow rate. The highest ozone concentration and ozone yield in oxygen are about 1.8 and 2.5 times higher than those in air, respectively. A very interesting phenomenon is observed: the peak ozone yield occurs at a lower ozone concentration when the inlet gas temperature and gas pressure are higher because of the increasing average gas temperature in the discharge gap as well as the decreasing reduced electric field and electron density in the microdischarge channel. Furthermore, the sensitivity and rate of production analysis based on the specific input energy (SIE) for the four most important species O₃, O, O(1D), and O₂(b¹∑) are executed to quantitatively understand the effects of every reaction on them, and to determine the contribution of individual reactions to their net production or destruction rates. A reasonable increase in SIE is beneficial to ozone generation. However, excessively high SIE is not favorable for ozone production.
- ozone generation,
- gas parameters,
- sensitivity analysis,
- rate of production analysis,
- pulsed dielectric barrier discharge

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References (26)

References

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