Picture of boy being examining by doctor at a tuberculosis sanatorium

Understanding our future through Open Access research about our past...

Strathprints makes available scholarly Open Access content by researchers in the Centre for the Social History of Health & Healthcare (CSHHH), based within the School of Humanities, and considered Scotland's leading centre for the history of health and medicine.

Research at CSHHH explores the modern world since 1800 in locations as diverse as the UK, Asia, Africa, North America, and Europe. Areas of specialism include contraception and sexuality; family health and medical services; occupational health and medicine; disability; the history of psychiatry; conflict and warfare; and, drugs, pharmaceuticals and intoxicants.

Explore the Open Access research of the Centre for the Social History of Health and Healthcare. Or explore all of Strathclyde's Open Access research...

Image: Heart of England NHS Foundation Trust. Wellcome Collection - CC-BY.

Investigation of ozone generation using dielectric barrier discharges at 50 Hz, 2.6 kHz and 20 kHz

Huang, Guangming and Wang, Tao and Timoshkin, Igor and MacGregor, Scott and Given, Martin and Wilson, Mark (2012) Investigation of ozone generation using dielectric barrier discharges at 50 Hz, 2.6 kHz and 20 kHz. In: Proceedings of the XIX International Conference on Gas Discharges and Their Applications. High Voltage Engineering, Beijing, pp. 650-653.

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Experiments were conducted to investigate ozone generation (DBD) at different frequencies. A cylindrical DBD ozone generator with a discharge gap of 0.3 mm has been developed. 50 Hz AC power was used to provide power density of 44.2 W/m3. 2.6 kHz and 20 kHz AC energisation frequencies were employed to provide power densities of 2.37 kW/m2 and 19.08 kW/m2 respectively. Discharge current, optical emission signals and discharge power were obtained under three frequencies. Ozone concentration and production efficiency at different feed gas flow rates were measured and calculated. It was found that discharge mode was different for positive and negative half-cycle of the applied voltage. Results show that ozone production efficiency rises with an increase in the ozone concentration at 50 Hz, however this efficiency drops with an increase in the ozone concentration at 2.6 kHz and 20 kHz. For the same ozone concentration level, 2.6 kHz is more efficient than 20 kHz. The highest ozone production efficiency achieved in this work is 191.5 g/kWh at 50 Hz and the highest ozone concentration is 271 g/Nm3 at 2.6 kHz.