Basics of Pulse Combustion Technology

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Advantages• Pulse combustion can result in– Increased heat and mass transfer rate ( by a factor 2 to 5)– Increased combustion intensity as quantified by the gasmixing index ( by a factor of up to 10)– Higher combustion efficiency with low excess air– Reduced pollutant emissions ( especially NO x , CO andsoot)– Improved thermal efficiency (by up to 40 %)– Reduced space requirements for the combustionequipment.
Limitations• High noise– Even larger than120 db– Can be reduced to 60~80db now.• Limitation of higher pressure oscillation– Compressed air/fuel mixture– Scale up of the combustion chamber
Page 2 and 3: • What is pulse combustion (PC)
Page 4 and 5: Basic information of PC• Pulse co
Page 6 and 7: Types of pulse combustor• Operati
Page 10 and 11: Applications of pulse combustor•
Page 12 and 13: PC spray dryer
Page 14 and 15: Flash dryingFigure 5 Novodyne Ltd.
Page 16 and 17: Schematic of the simulatedmechanica
Page 18 and 19: Dynamic mesha) Dynamic mesh when th
Page 20 and 21: Equations of PC model• Mass balan
Page 22 and 23: Combustion modelCIn this work, the
Page 24 and 25: Boundary condition (2)• Inlet: to
Page 26 and 27: Solutions (2)Figure 3 Convergence h
Page 28 and 29: Flame front during a cyclekmol/m 3
Page 30 and 31: Phase relations between gas pressur
Page 32 and 33: fuel influx during a cycle1.4Influx
Page 34 and 35: Gas dynamics in tailpipe (2)P23: Ou
Page 36 and 37: The fabricated small-scaledmechanic
Page 38 and 39: Operational conditions• Pulse com

Basics of Pulse Combustion Technology

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