Transient Barrier Discharge Characteristics of Parallel-Plate-Type, Packed-Bed, Non-Thermal Plasma Reactor Under High-Humidity Conditions

Barrier discharge has been used for ozone generation for water treatments and pollutant gas removal. An experiment has been conducted to observe transient barrier discharge characteristics of parallel‐plate‐type, 3 mm diameter, spherical glass beads packed‐bed, non‐thermal plasma reactors under high‐humidity conditions. The results show that: 1) steady operation of the reactor requires 5 to 10 min of operation under an initial 20 to 80% relative humidity at 20 °C in air, as a result of the desorption of water from the packed materials, 2) the usual method to determine discharge power using a Q‐V Lissajous figure may be distorted by adsorption/desorption of water vapor from the surface, and 3) since the surface of the packed material is heated to 50 to 160 °C, the mechanism of desorption may be a result of pure thermal effects. Change in reactor surface temperature with time.