Heat-Up Performance of Catalyst Carriers—A Parameter Study and Thermodynamic Analysis

Energies

Peer Moewius¹  Lukas Moeltner¹  Daniel Neurauter¹  Thomas Steiner¹  Verena Schallhart¹  Christoph Pfeifer² 

[1] Department for Industrial Engineering and Management, Management Center Innsbruck, 6020 Innsbruck, Austria;Institute for Chemical and Energy Engineering, University of Natural Resources and Life Sciences, 1180 Vienna, Austria;

关键词: catalytic converter;    light-off;    monolith;    cell density;    wall thickness;    cordierite;   

DOI  :  10.3390/en14040964

来源: DOAJ

【 摘 要 】

This study investigates geometric parameters of commercially available or recently published models of catalyst substrates for passenger vehicles and provides a numerical evaluation of their influence on heat-up behavior. Parameters considered to have a significant impact on the thermal economy of a monolith are: internal surface area, heat transfer coefficient, and mass of the converter, as well as its heat capacity. During simulation experiments, it could be determined that the primary role is played by the mass of the monolith and its internal surface area, while the heat transfer coefficient only has a secondary role. Furthermore, an optimization loop was implemented, whereby the internal surface area of a commonly used substrate was chosen as a reference. The lengths of the thin wall and high cell density monoliths investigated were adapted consecutively to obtain the reference internal surface area. The results obtained by this optimization process contribute to improving the heat-up performance while simultaneously reducing the valuable installation space required.

【 授权许可】

Unknown