CONVECTIVE EVAPORATION OF A SPHERICAL SUPER-REFRACTORY PARTICLE INSIDE A THERMAL PLASMA : THE STOKES' PROBLEM IN A FLUID WITH VARIABLE PROPERTIES

1974 ◽  
Author(s):  
P. Dumargue ◽  
C. Bonet ◽  
M. Daguenet
Keyword(s):  
Thermal Plasma ◽  
Stokes Problem ◽  
Variable Properties ◽  
Refractory Particle

CONTACT METHODS FOR DIAGNOSTICS OF THERMAL PLASMA

1990 ◽  
Vol 51 (C5) ◽  
pp. C5-281-C5-288
Author(s):  
P. Lj. STEFANOVIj ◽  
P. B. PAVLOVIj ◽  
M. M. JANKOVIj ◽  
S. N. OKA
Keyword(s):  
Thermal Plasma

Material Structure of Microcrystalline Silicon Deposited with an Expanding Thermal Plasma

2003 ◽  
Vol 762 ◽  
Author(s):  
C. Smit ◽  
D.L. Williamson ◽  
M.C.M. van de Sanden ◽  
R.A.C.M.M. van Swaaij
Keyword(s):  
Thermal Plasma ◽  
Hydrogen Plasma ◽  
Plasma Chemistry ◽  
Plasma Source ◽  
Growth Direction ◽  
Interaction Time ◽  
Material Structure ◽  
Average Particle ◽  
Microcrystalline Silicon ◽  
X Ray

AbstractExpanding thermal plasma CVD (ETP CVD) has been used to deposit thin microcrystalline silicon films. In this study we varied the position at which the silane is injected in the expanding hydrogen plasma: relatively far from the substrate and close to the plasma source, giving a long interaction time of the plasma with the silane, and close to the substrate, resulting in a short interaction time. The material structure is studied extensively. The crystalline fractions as obtained from Raman spectroscopy as well as from X-ray diffraction (XRD) vary from 0 to 67%. The average particle sizes vary from 6 to 17 nm as estimated from the (111) XRD peak using the Scherrer formula. Small angle X-ray scattering (SAXS) and flotation density measurements indicate void volume fractions of about 4 to 6%. When the samples are tilted the SAXS signal is lower than for the untilted case, indicating elongated objects parallel to the growth direction in the films. We show that the material properties are influenced by the position of silane injection in the reactor, indicating a change in the plasma chemistry.

SEEPAGE HEAT TRANSFER BETWEEN CLINKER AND COOLING AIR WITH VARIABLE PROPERTIES OF THE GRATE COOLER

2017 ◽  
Vol 48 (3) ◽  
pp. 263-281 ◽  
Author(s):  
Meiqi Wang ◽  
Bin Liu ◽  
Yan Wen ◽  
Haoran Liu
Keyword(s):  
Heat Transfer ◽  
Variable Properties ◽  
Grate Cooler ◽  
Cooling Air

THERMAL PLASMA GASIFICATION OF BIOMASS FOR FUEL GAS PRODUCTION

2009 ◽  
Vol 13 (3-4) ◽  
pp. 299-313 ◽  
Author(s):  
Milan Hrabovsky ◽  
M. Hlina ◽  
M. Konrad ◽  
Vladimir Kopecky ◽  
T. Kavka ◽  
...  
Keyword(s):  
Thermal Plasma ◽  
Gas Production ◽  
Fuel Gas ◽  
Plasma Gasification
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