Vapor Condensation and Coating Evaporation Are Both Responsible for Soot Aggregate Restructuring

2021 ◽  
Author(s):  
Ogochukwu Y. Enekwizu ◽  
Ali Hasani ◽  
Alexei F. Khalizov
Keyword(s):  
Vapor Condensation ◽  
Soot Aggregate

TEM study of amorphization of Cu and Ti foils by cold-rolling

1990 ◽  
Vol 48 (4) ◽  
pp. 146-147
Author(s):  
W. A. Chiou ◽  
N. L. Jeon ◽  
Genbao Xu ◽  
M. Meshii
Keyword(s):  
Solid State ◽  
Cold Rolling ◽  
High Energy ◽  
Rapid Quenching ◽  
Vapor Condensation ◽  
Metallic Alloys ◽  
Solid State Reactions ◽  
High Energy Particle ◽  
Amorphous Metallic Alloys ◽  
Thin Foils

For many years amorphous metallic alloys have been prepared by rapid quenching techniques such as vapor condensation or melt quenching. Recently, solid-state reactions have shown to be an alternative for synthesizing amorphous metallic alloys. While solid-state amorphization by ball milling and high energy particle irradiation have been investigated extensively, the growth of amorphous phase by cold-rolling has been limited. This paper presents a morphological and structural study of amorphization of Cu and Ti foils by rolling.Samples of high purity Cu (99.999%) and Ti (99.99%) foils with a thickness of 0.025 mm were used as starting materials. These thin foils were cut to 5 cm (w) × 10 cm (1), and the surface was cleaned with acetone. A total of twenty alternatively stacked Cu and Ti foils were then rolled. Composite layers following each rolling pass were cleaned with acetone, cut into half and stacked together, and then rolled again.

scholarly journals An Experimental Investigation of Water Vapor Condensation from Biofuel Flue Gas in a Model of Condenser, (1) Base Case: Local Heat Transfer without Water Injection

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 844
Author(s):  
Robertas Poškas ◽  
Arūnas Sirvydas ◽  
Vladislavas Kulkovas ◽  
Povilas Poškas
Keyword(s):  
Heat Transfer ◽  
Water Vapor ◽  
Flue Gas ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Water Injection ◽  
Vapor Condensation ◽  
Base Case ◽  
Water Vapor Condensation ◽  
Condensing Heat Exchanger

Waste heat recovery from flue gas based on water vapor condensation is an important issue as the waste heat recovery significantly increases the efficiency of the thermal power units. General principles for designing of this type of heat exchangers are known rather well; however, investigations of the local characteristics necessary for the optimization of those heat exchangers are very limited. Investigations of water vapor condensation from biofuel flue gas in the model of a vertical condensing heat exchanger were performed without and with water injection into a calorimetric tube. During the base-case investigations, no water was injected into the calorimetric tube. The results showed that the humidity and the temperature of inlet flue gas have a significant effect on the local and average heat transfer. For some regimes, the initial part of the condensing heat exchanger was not effective in terms of heat transfer because there the flue gas was cooled by convection until its temperature reached the dew point temperature. The results also showed that, at higher Reynolds numbers, there was an increase in the length of the convection prevailing region. After that region, a sudden increase was observed in heat transfer due to water vapor condensation.

Hollow nanoparticles of ?-iron oxide synthesized by chemical vapor condensation

2004 ◽  
Vol 6 (6) ◽  
pp. 627-631 ◽  
Author(s):  
Jai-Sung Lee ◽  
Sung-Soon Im ◽  
Chang-Woo Lee ◽  
Ji-Hun Yu ◽  
Yong-Ho Choa ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Chemical Vapor ◽  
Vapor Condensation ◽  
Hollow Nanoparticles ◽  
Chemical Vapor Condensation

A refractory Ca–SiO–H2–O2 vapor condensation experiment with implications for calciosilica dust transforming to silicate and carbonate minerals

Icarus ◽  
2008 ◽  
Vol 195 (1) ◽  
pp. 493-503 ◽  
Author(s):  
Frans J.M. Rietmeijer ◽  
Aurora Pun ◽  
Yuki Kimura ◽  
Joseph A. Nuth
Keyword(s):  
Vapor Condensation ◽  
Carbonate Minerals
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