Superadiabatic combustion in porous media allows a stable burning of ultra-lean methane/air mixtures, far below flammability limits. The heat regeneration effect of the porous matrix and the low degree of thermal non-equilibrium between the gas and the solid phases keep temperature values above the minimum necessary for combustion and hence the CO and NOx production at extremely low levels. Due to the transient nature of this phenomenon, a method to confine the combustion into a practical burner has been engineered. The Reciprocal Flow Burner (RFB) is an effective and simple system to achieve this result. A heat exchanger embedded into the pellets makes it an appealing alternative for high-efficiency low-emission heat production. In the present work, a numerical model is compared to experiments to provide a better understanding of heat extraction from a RFB.
A Porous Media Reciprocal Flow Burner With Embedded Heat Exchangers
Contarin, F, Barcellos, WM, Saveliev, AV, & Kennedy, LA. "A Porous Media Reciprocal Flow Burner With Embedded Heat Exchangers." Proceedings of the ASME 2003 Heat Transfer Summer Conference. Heat Transfer: Volume 2. Las Vegas, Nevada, USA. July 21–23, 2003. pp. 35-42. ASME. https://doi.org/10.1115/HT2003-47098
Download citation file: