Experimental Analysis on Characteristics of a Water-Cooled Non-Thermal Plasma Reactor

Abstract

Characteristics of a water-cooled non-thermal plasma (NTP) reactor used to reduce diesel emissions were experimentally studied. The effects of working voltage, operating frequency and air flow rate on discharge power and concentrations of O3 and NO2 generated by NTP system were investigated at different surface temperatures of discharge zone. The experimental results show that, the discharge power of the reactor would increase with the increasing of working voltage, operating frequency and surface temperatures; air flow rate had little influence on discharge power; variation of O3 and NO2 concentration were different with the increasing of working voltage and operating frequency at different surface temperatures of discharge zone; when the surface temperature of discharge zone was constant, concentrations of O3 and NO2 increased firstly and then declined with the increasing of air flow rate; and concentrations of O3 and NO2 were higher at lower temperature.

Meachanism and method of DPF regeneration by oxygen radical generated by NTP technology

“…Open the NTP power source and adjust the discharge voltage of 20 kV and discharge frequency of 9 kHZ. The concentration of the active materials is greatly influenced by the surface temperature of NTP reactor (Li et al, 2012). Adjust the air rate of fan and the flow rate of cooling water to control surface temperature of NTP reactor and keep the surface temperature for 90 o C. Active gas is produced after oxygen is passed through NTP reactor and the active gas is passed through DPF heated to the test temperature.…”