Exhaust condensation through porous bed in the primary zone of novel dump diffuser geometry

Abstract

The work presented in this article deals with the reduction of air pollution generated by automobiles. It is accomplished through the process of condensation using novel techniques such as utilization of porous metal foams. A modified geometry dump diffuser is used to facilitate flow of exhaust gases slowly around copper coils thereby condensing them. The condensed gases can be collected and stored in a chamber and then can be carried to industries for recycling. This article involves design of the modified geometry dump diffuser using CATIA V5 tool. The computational fluid dynamics (CFD) analysis of the model is carried out using the ANSYS Fluent software. The inlet parameters are obtained as per the exhaust characteristics of a typical 0.8 l 3-cylinder Gasoline Engine. The results are presented for modified geometry dump diffuser models with and without porous bed. Porous bed module is used to simulate the presence of metal foams in the primary zone and inside the inner fluid zone. The results are presented. The results show that the modified geometry dump diffuser model with porous bed can cool the exhaust gases to their condensation temperature. This model can be employed in automobiles to reduce air pollution.