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@article{1695178,
author = {Homola, Tomáš and Prukner, Václav and Hoffer, Petr and Šimek, Milan},
article_location = {Bristol},
article_number = {9},
doi = {http://dx.doi.org/10.1088/1361-6595/aba987},
keywords = {dielectric barrier discharge; ozone; production yield; multi-hollow surface DBD; MSDBD},
language = {eng},
issn = {0963-0252},
journal = {Plasma Sources Science and Technology},
title = {Multi-hollow surface dielectric barrier discharge: an ozone generator with flexible performance and supreme efficiency},
url = {https://iopscience.iop.org/article/10.1088/1361-6595/aba987},
volume = {29},
year = {2020}
}
TY - JOUR
ID - 1695178
AU - Homola, Tomáš - Prukner, Václav - Hoffer, Petr - Šimek, Milan
PY - 2020
TI - Multi-hollow surface dielectric barrier discharge: an ozone generator with flexible performance and supreme efficiency
JF - Plasma Sources Science and Technology
VL - 29
IS - 9
SP - 1-15
EP - 1-15
PB - IOP Publishing
SN - 09630252
KW - dielectric barrier discharge
KW - ozone
KW - production yield
KW - multi-hollow surface DBD
KW - MSDBD
UR - https://iopscience.iop.org/article/10.1088/1361-6595/aba987
L2 - https://iopscience.iop.org/article/10.1088/1361-6595/aba987
N2 - 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.
ER -
HOMOLA, Tomáš, Václav PRUKNER, Petr HOFFER a Milan ŠIMEK. Multi-hollow surface dielectric barrier discharge: an ozone generator with flexible performance and supreme efficiency. \textit{Plasma Sources Science and Technology}. Bristol: IOP Publishing, roč.~29, č.~9, s.~1-15. ISSN~0963-0252. doi:10.1088/1361-6595/aba987. 2020.
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