Abstract
The volumetric entropy generation rate distributions and exergy losses of fuel lean premixed CO/H2/air flames are investigated numerically in a micro-scale cylindrical channel at atmospheric pressure. The numerical simulation predicts the gas properties such as temperature, density and species concentrations by the detailed gas phase chemistry and transport. The entropy generation rates due to the effects of chemical reaction, thermal conduction and mass diffusion are calculated based on the gas properties. A detailed parametric study of the influence of CO/H2/air flow velocity and CO mass fraction on the volumetric entropy generation rate is performed. The entropy generation rate induced by chemical reaction is suppressed by adding more CO to the mixture. However, higher thermal conduction induced entropy generation is inspected in the mixture with more CO. The total entropy generation rate rises with the inlet velocity. This is the first systematical analysis of the volumetric entropy generation rates distributions of CO/H2/air flames in the micro channel. The analysis could be applied to other power conversion systems which utilize CO/H2/air mixture.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
