Numerical modeling of heat and mass transfer efficiency of the processes in turbulent foam layers in distillation

2016 ◽  
Vol 25 (4) ◽  
pp. 527-535 ◽  
Author(s):  
A. G. Laptev ◽  
E. A. Lapteva
Keyword(s):  
Mass Transfer ◽  
Numerical Modeling ◽  
Heat And Mass Transfer ◽  
Transfer Efficiency ◽  
Mass Transfer Efficiency

scholarly journals Development of water deaeration technologies with boiler exhaust gases

2021 ◽  
Vol 2039 (1) ◽  
pp. 012036
Author(s):  
M M Zamaleev ◽  
V N Kovalnogov ◽  
R I Kamalova ◽  
O V Pazushkina
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Power Plants ◽  
Thermal Power ◽  
Transfer Efficiency ◽  
Thermal Power Plants ◽  
Exhaust Gases ◽  
Mass Transfer Efficiency ◽  
The Media ◽  
Water Deaeration

Abstract The calculation of the heat and mass transfer efficiency of the proposed technology for deaeration of water by the exhaust gases of a gas-proof boiler in deaerators of serial design has been performed. The conditions and criterial values of the media consumption in the apparatus have been studied. It is shown that the technology can be successfully applied in operating thermal power plants.

CFD-based structure optimization of plate bundle in plate-fin heat exchanger considering flow and heat transfer performance

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yao Li ◽  
Haiqing Si ◽  
Jingxuan Qiu ◽  
Yingying Shen ◽  
Peihong Zhang ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Heat Exchanger ◽  
Heat And Mass Transfer ◽  
Field Performance ◽  
High Specific Surface Area ◽  
Calculation Model ◽  
Air Separation ◽  
Transfer Efficiency ◽  
Heat Transfer Efficiency

Abstract The plate-fin heat exchanger has been widely applied in the field of air separation and aerospace due to its high specific surface area of heat transfer. However, the low heat transfer efficiency of its plate bundles has also attracted more attention. It is of great significance to optimize the structure of plate-fin heat exchanger to improve its heat transfer efficiency. The plate bundle was studied by combining numerical simulation with experiment. Firstly, according to the heat and mass transfer theory, the plate bundle calculation model of plate-fin heat exchanger was established, and the accuracy of the UDF (User-Defined Functions) for describing the mass and heat transfer was verified. Then, the influences of fin structure parameters on the heat and mass transfer characteristics of channel were discussed, including the height, spacing, thickness and length of fins. Finally the influence of various factors on the flow field performance under different flow states was integrated to complete the optimal design of the plate bundle.

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