A Visualization Test Setup for Investigation of Water-Deposit Interaction in a Surrogate Rectangular Cooler Exposed to Diesel Exhaust Flow Univ of Michigan

Format:

Conference/Event

Author/Creator:

Abarham, Abarham, author.

Contributor:

Assanis, Dennis N.

Chafekar, Tejas

Hoard, John

Styles, Daniel

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

Exhaust gas recirculation (EGR) coolers are commonly used in diesel engines to reduce the temperature of recirculated exhaust gases in order to reduce NOx emissions. The presence of a cool surface in the hot exhaust causes particulate soot deposition as well as hydrocarbon and water condensation. Fouling experienced through deposition of particulate matter and hydrocarbons results in degraded cooler effectiveness and increased pressure drop. In this study, a visualization test setup is designed and constructed so that the effect of water condensation on the deposit formation and growth at various coolant temperatures can be studied. A water-cooled surrogate rectangular channel is employed to represent the EGR cooler. One side of the channel is made of glass for visualization purposes. A medium duty diesel engine is used to generate the exhaust stream. An automated system controls all critical parameters including gas inlet temperature and pressure, coolant temperature, and the exhaust flow rate to correlate laminar, transition, and turbulent flow regimes in the channel. A digital microscope is also utilized to record the deposit formation and water-deposit interaction process. This study leads us towards hypothesis for prevention or mitigation of the deposit formation in EGR coolers

Notes:

Vendor supplied data

Publisher Number:

2012-01-0364

Access Restriction:

Restricted for use by site license