Combustion characteristics of a heat-recirculating ceramic burner using a low-calorific-fuel |
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Affiliation: | 1. Foundation Institute of Materials Science, Division Manufacturing Technologies, Badgasteiner Straße 3, 28359 Bremen, Germany;2. University of Bremen and MAPEX Center for Materials and Processes, Bibliothekstraße 1, 28359 Bremen, Germany;3. Central Facility for Electron Microscopy, RWTH Aachen University, Ahornstraße 55, 52074 Aachen, Germany;1. Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia;2. Institute of Engineering Physics and Radio Electronics, Siberian Federal University, 660041, Krasnoyarsk, Russia;3. Institute of Engineering Systems and Energy, Krasnoyarsk State Agrarian University, 660049, Krasnoyarsk, Russia;4. Department of Experimental Physics, Wroclaw University of Science and Technology, 50-370, Wroclaw, Poland;1. Laboratory of Multifunctional Materials and Applications (LaMMA), LR16ES18, Faculty of Sciences of Sfax, University of Sfax, B.P. 1171, 3000 Sfax, Tunisia;2. Univ Lyon, INSA-LYON, LGEF, EA682, F-69621 Villeurbanne, France;1. Dipartimento di Ingegneria Meccanica e Industriale, Università degli Studi Roma Tre, Via Vito Volterra 62, 00146 Rome, Italy;2. Dipartimento di Ingegneria Meccanica ed Aerospaziale, Sapienza Università degli Studi di Roma, Via Eudossiana 18, 00184 Rome, Italy |
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Abstract: | A new type of the heat recirculating burner was constructed and its combustion characteristics during steady low-calorific-fuel/air combustion were investigated. Flammability limits of the burner were measured by experiments, and longitudinal temperature distributions of air and burned gas flowing in the passes of the burner were determined by means of both experimental measurements and numerical simulations. Using the heat recirculation rate and the thermal efficiency as criteria for the performance of the burner, the optimal design of the burner was examined in terms of a chemical parameter (the equivalence ratio), a fluid-mechanical parameter (the Reynolds number) and a geometrical parameter (the number of passes). |
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