Publication detail

Physical Aspects of Diaphragm Discharge Creation Using Constant DC High Voltage in Electrolyte Solution

KOZÁKOVÁ, Z. KRČMA, F. PROCHÁZKOVÁ, J. AUBRECHT, V. SLAVÍČEK, P.

Original Title

Type

lecture

Language

English

Original Abstract

This paper presents new results obtained from the investigation of the breakdown moment of diaphragm discharge generated using constant DC voltage in water solutions of two electrolytes (NaCl and NaNO_3). Electrical discharge was created in an orifice (initial diameter of 0.2 mm) in dielectric diaphragm (thickness of 0.25 mm) separating two electrode spaces. Both dynamic and static VA characteristics were recorded and subsequently, breakdown parameters were determined as a function of solution conductivity (adjusted by electrolyte concentration in the range of 300-1300 microS/cm). Obtained results revealed a significant decrease of breakdown voltage (from 1350 to 880 V) and resistance with the increasing solution conductivity. On the other hand, discharge power and current at breakdown moment was enhanced by the increasing conductivity (from 40 to 100 mA). This effect was similar in both tested electrolytes. Discharge ignition in water was related with bubble creation in the orifice, according to the thermal theory of electrical discharge generation. This phenomenon was confirmed by records of high speed camera and sound diagnostics.

Keywords

diaphragm dsicharge in electrolytes, electrical characteristics, breakdown parameters

Authors

KOZÁKOVÁ, Z.; KRČMA, F.; PROCHÁZKOVÁ, J.; AUBRECHT, V.; SLAVÍČEK, P.

Released

19. 6. 2008

Publisher

AV ČR

Location

Praha

Pages from

185

Pages to

186

Pages count

BibTex

@misc{BUT65270,
  author="Zdenka {Kozáková} and František {Krčma} and Jana {Procházková} and Vladimír {Aubrecht} and Pavel {Slavíček}",
  title="Physical Aspects of Diaphragm Discharge Creation Using Constant DC High Voltage in Electrolyte Solution",
  year="2008",
  pages="185--186",
  publisher="AV ČR",
  address="Praha",
  note="lecture"
}