Ozone Lab: Making O₃ in a Coaxial DBD — and Keeping It

Oxygen flows through the annular gap; microdischarges split O₂ and build O₃. Push power and flow around, and find the trade every real ozonizer lives on: heat destroys what the filaments make.

Schematic teaching model of a coaxial-DBD ozonizer. The physics shown is the real design tension — microdischarge filaments dissociate O₂ and three-body reactions build O₃, while the same deposited power heats the gas, and hot gas decomposes ozone; flow sets residence time and carries heat away, so concentration, yield, and efficiency trade against each other — but the numbers, filament statistics, and temperature scale are illustrative, not a kinetics solver. Real ozonizers add cooling, narrow gaps, and drive-waveform optimization on top.