Characteristics of the Discharge and Ozone Generation in Oxygen-Fed Coaxial DBD Using an Amplitude-Modulated AC Power Supply

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F18%3A00507463" target="_blank" >RIV/61389021:_____/18:00507463 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007%2Fs11090-018-9922-2" target="_blank" >https://link.springer.com/article/10.1007%2Fs11090-018-9922-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11090-018-9922-2" target="_blank" >10.1007/s11090-018-9922-2</a>

Result language

angličtina

Original language name

Characteristics of the Discharge and Ozone Generation in Oxygen-Fed Coaxial DBD Using an Amplitude-Modulated AC Power Supply

Original language description

In this study, a traditional tubular reactor and an amplitude-modulated AC power supply were employed to develop a unique practical ozone generator with a widely adjustable ozone concentration and simultaneously a constant ozone yield. The characteristics regarding discharge and ozone generation in oxygen were experimentally investigated in detail. The amplitude-modulated AC waveform consisted of T-ON (burst of four consecutive AC cycles) and T-OFF with a duty cycle of 0.4. The experimental results show that a unique ozone generator can be developed through changing the applied voltage amplitude when an amplitude-modulated AC power supply producing periodic bursts of several consecutive AC cycles during the T-ON period is used. A quite high and stable ozone yield of 165 +/- 16g/kWh was achieved and a wide range of ozone concentrations could be obtained. Moreover, we observed a very interesting phenomenon that the discharge energy and voltage peak for every AC cycle showed some difference, resulting from the accumulation and release of charge on the dielectric. The first AC cycle had the highest discharge energy and positive voltage peak as well as the lowest negative voltage peak, which was particularly obvious at a high energy density. Additionally, water cooling of the grounded electrode seemed to have a small influence on the basic electrical characteristics of the discharge and had a positive effect on the concentration and yield of ozone due to a reduction in gas temperature in the discharge gap.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

<a href="/en/project/GA15-04023S" target="_blank" >GA15-04023S: Advanced Research of Kinetic Processes in Streamer Discharges</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Plasma Chemistry and Plasma Processing

ISSN

0272-4324

e-ISSN

—

Volume of the periodical

38

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

1199-1208

UT code for WoS article

000446033700003

EID of the result in the Scopus database

2-s2.0-85052148922