Flow Analysis and Experimental Study on a Frost Reduction Method for Heat Exchangers

2020 ◽  
Vol 25 (3) ◽  
pp. 9-16
Author(s):  
Gwon-Seok Sun
Keyword(s):  
Experimental Study ◽  
Heat Exchangers ◽  
Reduction Method ◽  
Cooling System ◽  
Flow Analysis ◽  
Finned Tube ◽  
Cooling Efficiency ◽  
Frost Formation ◽  
Air Blast ◽  
New Type

Frosting on the surface of a heat exchanger degrades its cooling efficiency in a cooling system. In this study, frost flow analysis is performed for frost reduction. A new type of air blast refrigerator is designed for reducing frost formation in its finned tube. Experimental results of the frost formation in the air blast refrigerator are presented. The main difference between the proposed and conventional air blast refrigerators is the flow of air through the finned tube. The proposed refrigerator produces less frost than the conventional refrigerators.

scholarly journals AIR FLOW ANALYSIS FOR ELECTRICAL MOTOR'S COOLING SYSTEM WITH AUTODESK SIMULATION CFD 2013 PROGRAM

2013 ◽  
Vol 7 (2) ◽  
pp. 89-92 ◽  
Author(s):  
Jerzy Madej ◽  
Bartłomiej Będkowski
Keyword(s):  
Optimal Design ◽  
Cooling System ◽  
Flow Analysis ◽  
Design Solution ◽  
Cooling Efficiency ◽  
Axial Fan ◽  
Safe Operation ◽  
Fixed Direction ◽  
Different Types ◽  
Cfd Method

Abstract In the article the analysis of airflow through electrical motor was conducted and optimal design solution was chosen in order to increase cooling efficiency. Numerical simulations allow to determine the areas of temperature occurrence which may have destructive influence on electrical motor parts and on its safe operation. The numerical calculations of airflow was carried out for two different types of fans as well as for two different housings. An analysis of the construction was carried out by CFD method using Autodesk Simulation CFD 2013. Community results of the analysis, we can conclude that the better solution for machines with fixed direction of rotation is to use instead of the radial the axial fan. For axial fan the motor temperature in the same condition was lower by about 5°C.

Optimum fin spacing of finned tube adsorber bed heat exchangers in an exhaust gas-driven adsorption cooling system

2018 ◽  
Vol 232 ◽  
pp. 504-516 ◽  
Author(s):  
Behzad Golparvar ◽  
Hamid Niazmand ◽  
Amir Sharafian ◽  
Amirjavad Ahmadian Hosseini
Keyword(s):  
Heat Exchangers ◽  
Cooling System ◽  
Finned Tube ◽  
Exhaust Gas ◽  
Adsorption Cooling System ◽  
Fin Spacing ◽  
Adsorber Bed
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