The thermal efficiency of radiant porous burners is less than 25% because most of the combustion heat is lost by flue gas. Here, we present a new radiant burner design to recuperate the heat of the exit flue gas using a preheater to increase the inlet air temperature and raise the flame temperature locally above adiabatic temperature (superadiabatic) at fuel-lean conditions. The superadiabatic heat is then conducted through embedded radiation corridors and is radiated, at a higher temperature than the flue gas, to target. This paper presents the results of the superadiabatic radiant porous burner from a numerical analysis using a zero-order combustion reaction model for methane/air mixture and non-thermal equilibrium formulation. The thermal efficiency over 40% is predicted.
- Heat Transfer Division
Superadiabatic Radiant Porous Burner With Preheater and Radiation Corridors
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Vandadi, V, Park, C, & Kaviany, M. "Superadiabatic Radiant Porous Burner With Preheater and Radiation Corridors." Proceedings of the ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Theory and Fundamental Research in Heat Transfer. Minneapolis, Minnesota, USA. July 14–19, 2013. V001T03A037. ASME. https://doi.org/10.1115/HT2013-17032
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