Multi-hollow surface dielectric barrier discharge: an ozone generator with flexible performance and supreme efficiency

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F20%3A00535367" target="_blank" >RIV/61389021:_____/20:00535367 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/20:00114480

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1361-6595/aba987" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6595/aba987</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6595/aba987" target="_blank" >10.1088/1361-6595/aba987</a>

Result language

angličtina

Original language name

Multi-hollow surface dielectric barrier discharge: an ozone generator with flexible performance and supreme efficiency

Original language description

This contribution investigates the effects of duty cycle and mass flow of synthetic air and oxygen on the efficiency of ozone generation in multi-hollow surface dielectric barrier discharge (MSDBD). It discloses that the efficiency of ozone generation in MSDBD is significantly higher compared with standard coplanar DBD, surface DBD and volume DBDs. Ozone production yield reached 205.5 +/- 29.1 g (kW h)(-1)(40% duty cycle, 8 slm) and 413.91 +/- 58.7 g (kW h)(-1)(100% duty cycle, 8 slm) at an energy cost of 8.7 and 4.3 eV/molecule for synthetic air and oxygen, respectively. Such high ozone yields arose out of the intrinsic characteristics of MSDBD ceramics, which were efficiently cooled by the flow of the working gas. The amplitude modulation of low-frequency 5 kHz high-voltage sine waveforms facilitates controlled O(3)production at a nearly constant rate of yield. Since the correct evaluation of ozone production yield requires precise determination of the discharge power, the concentration of ozone and working gas-flow, considerable attention was paid to measurements of these parameters. It is confirmed and experimentally demonstrated herein that correct determination of discharge power lies with Lissajous figure methods, while the determination of power through the direct integration of productu(t)i(t), wherei(t) is measured by Pearson current probe, leads to systematically lower values of calculated power with consequent overestimation of the ozone production yield. The correct determination of discharge power is clearly the key to the proper calculation of ozone production yield and efficiency. Under the DBD discharge conditions presented herein, ozone production yield and efficiency achieved figures as high as 19.5% and 35.2% of theoretical limits recently established for air and oxygen, respectively.

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Name of the periodical

Plasma Sources Science & Technology

ISSN

0963-0252

e-ISSN

—

Volume of the periodical

29

Issue of the periodical within the volume

9

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

095014

UT code for WoS article

000575395600001

EID of the result in the Scopus database

2-s2.0-85092302932