scholarly journals Performance of Refrigerants using CFD in Heat Exchangers

2020 ◽  
Vol 9 (4) ◽  
pp. 1411-1415
Keyword(s):  
Fluid Dynamics ◽  
Thermal Analysis ◽  
Heat Exchange ◽  
Exchange Rates ◽  
Heat Exchangers ◽  
Parallel Flow ◽  
Hot Water ◽  
Dynamics Analysis ◽  
Counter Flow ◽  
Computational Fluid Dynamics Analysis

This paper deals with a comparative study of heat exchange rates between the two fundamental stream courses of action like parallel flow and counterflow. Computational fluid dynamics analysis and thermal analysis were conducted on the heat exchanger for different fluids by taking hot water and refrigerants R22, R134A, R600A and various materials. For heat exchangers,. 3D simulations are conducted in Pro-Engineer and ANSYS. Keywords: parallel flow, counter flow, coolant, hot water, Pro- and Ansys engineer

scholarly journals Performance Assessment of Double Corrugated Tubes in a Tube-In-Shell Heat Exchanger

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1343
Author(s):  
Kristina Navickaitė ◽  
Michael Penzel ◽  
Christian R. H. Bahl ◽  
Kurt Engelbrecht
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Heat Exchanger ◽  
Pressure Drop ◽  
Heat Exchangers ◽  
Dynamics Analysis ◽  
Flow Rates ◽  
Turbulent Flow Regime ◽  
Computational Fluid Dynamics Analysis ◽  
Mass Flow Rates

In this article, the performance of double corrugated tubes applied in a tube-in-shell heat exchanger is analysed and compared to the performance of a heat exchanger equipped with straight tubes. The CFD (computational fluid dynamics) analysis was performed considering a turbulent flow regime at several mass flow rates. It is observed that the double corrugated geometry does not have a significant impact on the pressure drop inside the analysed heat exchanger, while it has the potential to increase its thermal performance by up to 25%. The ε–NTU (effectiveness–number of transfer units) relation also demonstrates the advantage of using double corrugated tubes in tube-in-shell heat exchangers over straight tubes.

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