Influence of oxygen concentration, feed gas flow rate and air humidity on the output of ozone produced by corona discharge

Abstract

Ozone (trioxygen) shows a lack of stability and quickly breaks down to dioxygen, meaning that ozone in any way can not be stored. It is therefore necessary to produce ozone on site where it is used. This leads to the idea of having an ozone generator with high efficiency. Ozone generator is an electrical device to convert oxygen as feed gas into ozone. Besides electrical parameters, feed gas plays an important role for ozone output. Feed gas for an ozone generator may be ambient air, dry air or oxygen rich gas. The influence of air humidity, oxygen concentration, flow rates of feed gas and their effects on ozone output of the corona discharge ozone generator have been investigated. For small-scale ozone production (i.e. one hundred grams per hour or less), using oxygen produced by pressure swing adsorption method (PSA) is considered to be a reasonable solution. The authors intend to connect the studies with the practical reality of using low-powered ozone generators in tropical area with high humidity condition.

Wind Tunnel Testing of Plasma Actuator with Two Mesh Electrodes to Boundary Layer Control at High Angle of Attack

“…The experimental studies show that the efficiency of the plasma actuator depends on several factors, including air flow velocity V , as well as the parameters of the plasma actuator supply system and the power of the discharges. Many experimental studies confirm that the efficiency of DBD systems decreases with the increase in gas flow velocity (e.g., ozone generators, the concentration of ozone decreases) [ 32 , 33 , 34 ], the same is the case with DBD plasma actuators [ 35 , 36 ] because the operation of the plasma actuator is precisely to generate the plasma “ion wind”.…”

Pengaruh Paparan Gas Ozon terhadap Jumlah Koloni Jamur Candida albicans

“…Pada penelitian ini densitas sampel yang digunakan lebih besar daripada penelitian sebelumnya namun mesin generator ozon yang digunakan hanya menggunakan gas oksigen sebagai sumbernya sehingga proporsi gas oksigen lebih adekuat dan dapat mengasilkan ozon yang lebih berkualitas dibandingkan generator ozon yang menggunakan udara sebagai sumber gasnya. 29 Penelitian ini menggunakan sampel berupa suspensi yang memiliki kandungan air di dalamnya. Hal ini sejalan dengan penelitian terdahulu yang mengungkapkan bahwa aktivitas air dari sampel dilaporkan memengaruhi efisiensi gas ozon.…”