Analysis of Double Dielectric Barrier Discharge (DDBD) Reactor as Ozone Generator Influence of Pulse Frequency and Duty Cycle

Abstract

Double Dielectric Barrier Discharge (DDBD) generator is a reactor that is considered more qualified as an ozone reactor for medical applications because there is space between two barriers that function as a place for the flow of pure oxygen. Research on medical ozone production with Double Dielectric Barrier Discharge (DDBD) technology with variate pulse frequency and duty cycle configuration has been carried out. The purpose of this study is to obtain the optimum dose of ozone for applications in the medical field. The DDBD reactor is made of Pyrex glass length of 19 cm, a outter diameter of 4.23cm and inner diameter of 1.95 cm. Stainless mash are used as the inner and outer electrode materials with a length of 13.5 cm and 5 cm wide. Both variations in the pulse frequency, namely 30 Hz, 60 Hz, 90 Hz and variations in the duty cycle, namely 20%, 40%, 60% used with voltage variations from 200 V to 12 kV and flowrate used is 0.6 L/minute. The results showed that the higher the pulse frequency make the higher current and the higher the voltage reached so that the ozone concentration maximum reached was also higher. The optimum of duty cycle is 60% for mobility, however this mobility is unstable duty cycle. The power required to produce ozone at a frequency of 30 Hz is around, 60 Hz around and 90 Hz around. The maximum ozone concentration is 1416 mg/L in the 90Hz 60% configuration with a voltage of 11.9 kV. The highest efficiency to produce high ozone concentration with low power is in the 30 Hz 60% configuration, which is 708 mg/L ozone concentration with 1.21 Watt of power.