The effect of air velocity on high-temperature convection inside a hanging droplet of aqueous salt solution

2021 ◽  
Author(s):  
V. V. Glezer ◽  
A. A. Litvintceva
Keyword(s):  
High Temperature ◽  
Salt Solution ◽  
Aqueous Salt Solution ◽  
Air Velocity

scholarly journals Study on Performance Damage and Mechanism Analysis of Asphalt under Action of Chloride Salt Erosion

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3089
Author(s):  
Peilei Zhou ◽  
Wensheng Wang ◽  
Lili Zhu ◽  
Haoyun Wang ◽  
Yongming Ai
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
High Temperature ◽  
Low Temperature ◽  
Temperature Sensitivity ◽  
Salt Solution ◽  
Solution Concentration ◽  
Chloride Salt ◽  
Temperature Performance ◽  
Low Temperature Performance

This study aims to investigate the performance evolution and mechanism of asphalt under action of chloride salt erosion. Asphalt samples soaked with five different snow melting chloride salt concentrations were taken as the research object. Then, the high-temperature performance, low-temperature performance, temperature sensitivity and asphalt–aggregate adhesion property of asphalt samples were carried out. Additionally, Fourier transform infrared spectroscopy (FTIR) was used to explore the mechanism of chloride salt erosion on asphalt. Test results showed the linear variation relationships of high-temperature performance, low-temperature performance and temperature sensitivity with chloride salt concentrations. The high-temperature performance of asphalt would be improved by chloride snowmelt salt. With the increase in the chloride salt solution concentration, the low-temperature performance of asphalt became worse, and the temperature sensitivity increased. Moreover, after the effect of the chloride salt solution, the asphalt–aggregate adhesion property decreased with the increase in the chloride salt solution concentration. It is necessary to control the amount of chloride snowmelt salt in the actual snow removal projects. Finally, based on Fourier transform infrared spectroscopy, the mechanism of chloride salt erosion on asphalt was preliminarily explored. With the increase in the chloride salt solution concentration, the proportion of light components (saturated fraction, aromatic fraction) in asphalt decreased, and the proportion of heavy components (resin and asphaltene) with good thermal stability increased.

Transmembrane potential in vesicles formed by catanionic surfactant mixtures in an aqueous salt solution

2020 ◽  
Vol 22 (45) ◽  
pp. 26438-26451
Author(s):  
Ksenia A. Emelyanova ◽  
Polina O. Sorina ◽  
Alexey I. Victorov
Keyword(s):  
Salt Solution ◽  
Transmembrane Potential ◽  
Aqueous Salt Solution ◽  
Simple Theory ◽  
Surfactant Mixtures ◽  
Catanionic Surfactant

Simple theory shows the effects of vesicle structure and the composition of the medium on the transmembrane potential.

The Adsorption of Low Concentration SO2 with the Second Modified Activated Carbon Fiber Loaded Mn

2011 ◽  
Vol 109 ◽  
pp. 125-130
Author(s):  
Jie Fu ◽  
Ying Chun Yan ◽  
Jing Zhang
Keyword(s):  
Activated Carbon ◽  
High Temperature ◽  
Adsorption Properties ◽  
Activated Carbon Fiber ◽  
Impregnation Method ◽  
Air Velocity ◽  
Desulfurization Rate ◽  
Modified Activated Carbon ◽  
Low Concentration ◽  
Adsorption Temperature

The Mn loaded ACF (ACF-Mn), prepared by impregnation method combined with activation method under high temperature, can be used to adsorb the low concentration SO2. The modified ACF was characterized by iodine value and functional groups. The adsorption properties of low concentration SO2 on ACF-Mn-Cu50 were also studied. The result showed that the adsorption properties were improved with the granular Cu. Amount of Mn particles attached to the surface of ACF and the desulfurization rate of ACF-Mn-Cu50 both increased after second modification when the adsorption temperature was 60°C, the air velocity was Q1=0.3 L/min and Q2=0.4 L/min respectively and the concentration of SO2 was 0.62×10-4 μg/ml.

Spectrophotometry Study of Aqueous Salt Solution in Carbon Dioxide Microemulsions

Langmuir ◽  
2002 ◽  
Vol 18 (10) ◽  
pp. 3787-3791 ◽  
Author(s):  
Mohammed J. Meziani ◽  
Ya-Ping Sun
Keyword(s):  
Carbon Dioxide ◽  
Salt Solution ◽  
Aqueous Salt Solution

scholarly journals Droplet desorption modes at high heat flux

2019 ◽  
Vol 196 ◽  
pp. 00002
Author(s):  
Sergey Misyura ◽  
Anton Meleshkin
Keyword(s):  
Temperature Field ◽  
Salt Solution ◽  
Ambient Air ◽  
Nucleate Boiling ◽  
High Heat ◽  
Droplet Surface ◽  
Aqueous Salt Solution ◽  
Heated Wall ◽  
High Heat Flux ◽  
Desorption Rate

Nonisothermal droplet desorption of aqueous salt solution H2O/LiBr during nucleate boiling was studied experimentally. A droplet was placed on a horizontal heated wall. The initial concentration of salt C0 = 25 %. The wall temperature Tw = 120 °C and ambient air pressure is 1 bar. Thermal images of the temperature field on the droplet surface show an extremely non-uniform temperature field. At nucleate boiling in LiBr salt solution it is incorrect to predict the desorption behavior in stationary approximation. It was previously believed that the rate of evaporation does not vary with time. For the first time it is shown that the desorption rate is divided into several characteristic time intervals. These intervals is characterized by a significant change in the desorption rate.

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