Fundamental Mass Transfer Concepts in Engineering Applications

2019 ◽  
Author(s):  
Ismail Tosun
Keyword(s):  
Mass Transfer ◽  
Engineering Applications ◽  
Fundamental Mass

Flow and mass transfer modelling for tissue engineering applications

2008 ◽  
Vol 11 (sup001) ◽  
pp. 53-55
Author(s):  
B. Carpentier ◽  
A. Gautier ◽  
P. Paullier ◽  
A. Ould-Dris ◽  
P. Layrolle ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Mass Transfer ◽  
Engineering Applications ◽  
Transfer Modelling

The Analysis of the Effect of Fouling on the Performance of the Fill Layer

2014 ◽  
Vol 986-987 ◽  
pp. 998-1003
Author(s):  
Lu Ping Bai ◽  
Li Zhang ◽  
Xiao Feng Lu
Keyword(s):  
Mass Transfer ◽  
Flat Plate ◽  
Heat And Mass Transfer ◽  
Growth Model ◽  
Empirical Formula ◽  
Cooling Tower ◽  
Theoretical Foundation ◽  
Plate Model ◽  
Engineering Applications ◽  
Work Done

Based on that the film filling was simplified to the flat plate model, the heat and mass transfer of the filling zone with fouling in cooling tower were analyzed. The effect of fouling on the performance of filler was analyzed according to the dirt growth model. The work done in this paper can simply forecast changes in cooling tower performance caused by the filler fouling. It will lay a theoretical foundation for accurately calculating the performance coefficient of filler. And it is helpful to solving the problem of no the ripe empirical formula of filler performance with fouling for engineering applications.

An Investigation of Electrolytic Jet Polishing at High Current Densities

1963 ◽  
Vol 85 (4) ◽  
pp. 395-401 ◽  
Author(s):  
Reno R. Cole ◽  
Yoram Hopenfeld
Keyword(s):  
Mass Transfer ◽  
Flow Rate ◽  
Mathematical Analysis ◽  
High Current ◽  
Electrolyte Flow ◽  
Current Densities ◽  
Relationship Of ◽  
The Relationship ◽  
Modified Theory ◽  
Fundamental Mass

A method of polishing metals by means of an electrolytic jet at extremely high current densities (to 1750 amps per sq in.) is described. Data are presented on the relation of polishing effect on various metals to current density and electrolyte flow rate for several electrolytes. An experimental method is described whereby the relationship of the above factors can be determined. It was found that all metals investigated could be polished at high enough current densities. Previous theories of electrolytic polishing are discussed and shown to not fully account for the process investigated. A modified theory to account for polishing at the high current densities observed is presented and is supported by mathematical analysis based on fundamental mass transfer considerations.

scholarly journals Biogas Production and Fundamental Mass Transfer Mechanism in Anaerobic Granular Sludge

2019 ◽  
Vol 11 (16) ◽  
pp. 4443 ◽  
Author(s):  
Afridi ◽  
Jing ◽  
Younas
Keyword(s):  
Mass Transfer ◽  
Biogas Production ◽  
Oxygen Demand ◽  
Granular Sludge ◽  
Transfer Mechanism ◽  
Transfer Rates ◽  
Analytical Monitoring ◽  
Mass Transfer Mechanism ◽  
Micro Reactor ◽  
Fundamental Mass

Anaerobic granules are responsible for organic degradation and biogas production in a reactor. The biogas production is entirely dependent on a mass transfer mechanism, but so far, the fundamental understanding remains poor due to the covered surface of the reactor. The study aimed at investigating the fundamental mass transfer characteristics of single anaerobic granules of different sizes using microscopic imaging and analytical monitoring under single and different organic loadings. The experiment was conducted in a micro reactor and mass transfer was calculated using modified Fick’s law. Scanning electron microscopy was applied to observe biogas production zones in the granule, and a lab-scale microscope equipped with a camera revealed the biogas bubble detachment process in the micro reactor for the first time. In this experiment, the granule size was 1.32, 1.47, and 1.75 mm, but 1.75 mm granules were chosen for further investigation due to their large size. The results revealed that biogas production rates for 1.75 mm granules at initial Chemical Oxygen Demand (COD) 586, 1700, and 6700 mg/L were 0.0108, 0.0236, and 0.1007 m3/kg COD, respectively; whereas the mass transfer rates were calculated as 1.83 × 10−12, 5.30 × 10−12, and 2.08 × 10−11 mg/s. It was concluded that higher organic loading and large granules enhance the mass transfer inside the reactor. Thus, large granules should be preferred in the granule-based reactor to enhance biogas production.

Fundamental Mass Transfer Model for Indoor Air Emissions from Surface Coatings

Indoor Air ◽  
1993 ◽  
Vol 3 (4) ◽  
pp. 263-268 ◽  
Author(s):  
Bruce A. Tichenor ◽  
Zhishi Guo ◽  
Leslie E. Sparks
Keyword(s):  
Mass Transfer ◽  
Indoor Air ◽  
Surface Coatings ◽  
Air Emissions ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
Fundamental Mass
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