Ozone Production in Coaxial DBD Using an Amplitude-Modulated AC Power Supply in Air

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F19%3A00519304" target="_blank" >RIV/61389021:_____/19:00519304 - isvavai.cz</a>

Result on the web

<a href="https://www.tandfonline.com/doi/full/10.1080/01919512.2019.1565986" target="_blank" >https://www.tandfonline.com/doi/full/10.1080/01919512.2019.1565986</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/01919512.2019.1565986" target="_blank" >10.1080/01919512.2019.1565986</a>

Result language

angličtina

Original language name

Ozone Production in Coaxial DBD Using an Amplitude-Modulated AC Power Supply in Air

Original language description

In this study, a traditional tubular reactor and an amplitude-modulated AC power supply are employed to develop a unique practical ozone generator with a widely adjustable ozone concentration and simultaneously a constant ozone yield. The amplitude-modulated AC high-voltage waveform driving the discharge consists of the TON (burst of four consecutive AC cycles) and TOFF periods. The characteristics of the ozone generation in air were experimentally investigated at different energy densities, duty cycles and air flow rates, as well as cooling conditions and frequencies. The experimental results show that a unique ozone generator has an almost constant ozone yield of 51.68 ± 2.97 g/kWh in the energy density range of 50–350 kJ/m3, while a wide range of ozone concentration and output can be developed through changing the applied voltage amplitude. A higher ozone yield of can be achieved by decreasing the duty cycle and increasing gas flow rate, while higher ozone concentration can be easily achieved by changing air flow rate. The maximum ozone yield of 92 g/kWh is achieved. In contrast to only a single AC cycle in one complete TON period, changing duty cycle for a consecutive AC cycles in one complete TON period cannot be employed to develop a unique ozone generator with a widely adjustable ozone concentration and simultaneously a constant ozone yield because of different Lissajous figures, discharge energies, positive peaks, negative peaks and their differences for each AC cycle. In addition, the total capacitance of the reactor is not only independent of energy density, duty cycle and cooling condition, but also of AC frequency. A higher AC frequency of the applied high-voltage waveforms leads to a lower dielectric capacitance while increasing gap capacitance.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS 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

2019

Confidentiality

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

Name of the periodical

Ozone-Science & Engineering

ISSN

0191-9512

e-ISSN

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Volume of the periodical

41

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

437-447

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85060476630