Author: Peter Chin-Ming PanPublisher:
ISBN:
Category :
Languages : en
Pages : 134
Book Description
Optical Properties of Soot
Author: Peter Chin-Ming PanDetermination of the Optical Properties of Soot Particles from the Effective Optical Properties of Compressed Soot Pellets
Author: Harjit Singh HuraOptical Properties of Soot Particles in Flames by Classical and Dynamic Light Scatterng
Author: Tryfon Theodoroy CharalampopoulosPublisher:
ISBN:
Category :
Languages : en
Pages : 324
Book Description
Determination of the Wavelength Dependence of the Optical Properties of Soot from In-situ Measurements
Author: Hyunsoo ChangOptical Properties of Soot Particles as Function of Relative Humidity
Author: Boyang ZhaoPublisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 56
Book Description
Optical properties, i.e. scattering coefficient and absorption coefficient, of soot aerosol particles were investigated as they restructure during a simulated atmospheric ageing process. The soot particles were generated by a McKenna burner and injected into a smog chamber after being denuded and size selected. In the smog chamber, the soot restructuring process was induced by formation of a secondary organic aerosol (SOA) coating, which was generated by the photo-oxidation reaction of the SOA precursor p-xylene with OH radical. The particle diameter, mass, scattering and absorption coefficients were monitored with a scanning mobility particle sizer, a centrifugal particle mass analyzer, and a photoacoustic extinctiometer, respectively. Effective density and shape factor for the particles were determined to assess the degree of restructuring. Experiments were done at different relative humidities (RH) and I found that higher RH leads to a faster restructuring process. Mass scattering cross-section, mass absorption cross-section, and mass absorption cross-section with respect to bare soot particles were calculated to show how scattering and absorption are affected by the restructuring process. Under all RH conditions, the mass scattering cross-section increased for both coated and denuded soot particles. The mass absorption cross-section with respect to bare soot particle shows an increasing trend for coated soot particles as the mass growth factor increases. High and low RH conditions give rise to a higher value of mass absorption cross-section with respect to bare soot particles compared to intermediate RH conditions (RH=40%). The mass absorption cross-section value with respect to bare soot particles for intermediate RH is about 30% less than those for low and high RH. The overall work can provide optical information to the process of soot particles restructuring induced by SOA coating under different RH conditions.
The Optical Properties of Soot with Relation to the Emissivities of Hydrocarbon Flames
Author: Ian Alexander McGrathExperimental Study of the Optical Properties of Soot and Smoke
Author: Measurement of Visible and Near-Infrared Optical Properties of Soot Produced from Laminar Flames
Author: Structure and Optical Properties of Soot
Author: G. M. FaethPublisher:
ISBN:
Category :
Languages : en
Pages : 130
Book Description
Measured soot optical properties were in good agreement with the predictions of RDG-PFA theory over a broad test range, as follows: soot from both the fuel-rich and fuel-lean regions of buoyant diffusion flames, wavelengths of 350-800 nm, primary particle size parameters as large as 0.46, and soot formed in diffusion flames burning in air for a variety of gaseous and liqud hydrocarbon fuels (acetylene, ethylene, propylene, butadiene, benzene, cyclohexane, toluene and n-heptane).
Author: Jinyu Zhu