Critical temperature for nanoparticle cloud formation during combustion of single micron-sized iron particle
Daoguan Ning, Yuriy Shoshin, J.A. van Oijen, Giulia Finotello, Laurentius P.H. de Goey
Abstract
Temporally, spatially, and thermally resolved measurements of in situ nanoparticle cloud formation during combustion of single micron-sized iron particles are carried out. The critical particle temperature for the cloud formation is identified using high-speed and high-magnification shadowgraphy, recording the evolution of a nanoparticle cloud, synchronized with two-color pyrometry probing the surface temperature of the burning micron particle. The finding could serve as an important criterion to minimize nanoparticle generation in the flame of iron-particle suspensions, making iron powders a cleaner and more recyclable fuel.
Topics & Concepts
PyrometerNanoparticleShadowgraphyParticle (ecology)CombustionMaterials scienceChemical engineeringNanotechnologyTemperature measurementChemistryOpticsThermodynamicsLaserPhysicsOrganic chemistryGeologyOceanographyEngineeringnanoparticles nucleation surface interactionsCombustion and flame dynamicsParticle Dynamics in Fluid Flows