https://doi.org/10.1140/epjti/s40485-020-00061-4
Research Article
Influence of the nozzle head geometry on the energy flux of an atmospheric pressure plasma jet
1
Institute of and Applied Physics (IEAP), Kiel University, Leibnizstraße 19, 24098, Kiel, Germany
2
Leibniz Institute for Plasma Science and Technology (INP), Felix-Hausdorff-Straße 2, 17489, Greifswald, Germany
3
Fraunhofer Institute for Manufacturing Technology and Advanced Materials (IFAM), Wiener Straße 12, 28359, Bremen, Germany
a
thorben.kewitz@inp-greifswald.de
Received:
4
May
2020
Accepted:
22
December
2020
Published online:
7
January
2021
The influence of different nozzle head geometries and, therefore, the variation of the excitation and relaxation volume on the energy flux from an atmospheric pressure plasma jet to a surface have been investigated. Measurements have been performed by passive calorimetric probes under variation of the gas flow through the nozzle. The results show that the geometry of the nozzle head has a significant impact on the resulting energy flux. The relaxation volume affects the dependence of the energy flux on the gas flow. While there is no significant influence of the working gas flow on the energy flux without a relaxation volume, utilizing a relaxation volume leads to a decrease of the energy flux with increasing working gas flow. Within the analyzed parameter range, the energy flux reveals for both nozzle heads a linear dependency on the applied primary voltage.
Key words: Calorimetry / Plasma arc devices / Nozzle head geometry
© The Author(s) 2021
Open Access licensed Springer on behalf of EPJ. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
