PNNL

Abstract

There are a number of corona reactor geometries that can be used for producing a plasma and the desired NO conversion chemistry. Most units used for NTP reactors are dielectric barrier discharge reactors. The most common design is the cylindrical or concentric tube geometry. These units are comprised of an inner and outer cylindrical electrode that are concentric to one another, in which a high voltage potential is placed between. The exhaust gases to be processed are then passed through the cavity in between these two electrodes. This paper presents research that was sponsored by Delphi Automotive Systems to evaluate the design and geometric variation effects on reactor performance and conversion efficiency. The study was performed at the Pacific Northwest National Laboratory and in conjunction with researchers at Delphi Energy and Engine Management.