Particle size distributions of ultrafine combustion aerosols generated from household fuels

Ultrafine particle emission from combustion devices burning natural gas

New challenge in combustion is the extended use of “clean” fuels, such as methane, in “particle free” combustion devices. Although large efforts have been made, actual combustion systems burning methane are still source of particulate that might be emitted in the atmosphere. In this paper measurements of ultrafine particle emission from premixed laboratory flames and several practical combustio...

Particle Size Analysis of Aerosols from Medicinal Inhalers

Methods currently in use for the in-vitro measurement of the particle size distribution of aerosols from medical inhalers are reviewed with emphasis on their applicability both for product development and quality control testing and for simulation of likely performance in clinical use. Key attributes and limitations of the various techniques are identified, and consideration is also given both ...

Application of Fractals and Kinetic Equation in Modelling Cluster and Ultrafine Particle Size Distributions

We briefly describe a model which seems to be applicable to a variety of coalescence growth systems. Spanning cluster growth, particle growth and hillockformation in thin metal f%ns, this model is based on the Smoluchowski kinetic equations and fractals. We describe how this model has been able to suggest the e$ect of translational to internal energy conversion in coalescing systems in determin...

Emission of Metals from Pelletized and Uncompressed Biomass Fuels Combustion in Rural Household Stoves in China

Effort of reducing CO₂ emissions in developing countries may require an increasing utilization of biomass fuels. Biomass pellets seem well-suited for residential biomass markets. However, there is limited quantitative information on pollutant emissions from biomass pellets burning, especially those measured in real applications. In this study, biomass pellets and raw biomass fuels were burned i...

Toxicity of biomass combustion generated ultrafine particles: evidence from stack-sampled and airborne UFPs