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.

scholarly journals Computational fluid dynamics analysis on heat transfer and friction factor characteristics of a turbulent flow for internally grooved tubes

2013 ◽  
Vol 17 (4) ◽  
pp. 1125-1137 ◽  
Author(s):  
P. Selvaraj ◽  
J. Sarangan ◽  
S. Suresh
Keyword(s):  
Heat Transfer ◽  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Nusselt Number ◽  
Pressure Drop ◽  
Friction Factor ◽  
Dynamics Analysis ◽  
Computational Fluid Dynamics Analysis ◽  
Plain Tube ◽  
Grooved Tube

The article presents computational fluid dynamics studies on heat transfer, pressure drop, friction factor, Nusselt number and thermal hydraulic performance of a plain tube and tube equipped with the three types of internal grooves (circular, square and trapezoidal).Water was used as the working fluid. Tests were performed for Reynolds number ranges from 5000 to 13500 for plain tube and different geometry inside grooved tubes. The maximum increase of pressure drop was obtained from numerical modeling 74% for circular, 38% for square and 78% for trapezoidal grooved tubes were compared with plain tube. Based on computational fluid dynamics analysis the average Nusselt number was increased up to 37%, 26% and 42% for circular, square and trapezoidal grooved tubes respectively while compared with the plain tube. The thermal hydraulic performance was obtained from computational fluid dynamics analysis up to 38% for circular grooved tube, 27% for square grooved tube and 40% for trapezoidal grooved tube while compared with the plain tube.

Computational Fluid Dynamics Analysis of a Heat Exchanger Provided with Helical Baffles

2019 ◽  
Vol 41 (12) ◽  
pp. 1026-1039
Author(s):  
Mario Antonio Cucumo ◽  
Vittorio Ferraro ◽  
Dimitrios Kaliakatsos ◽  
Marilena Mele ◽  
Antonio Galloro ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Heat Exchanger ◽  
Dynamics Analysis ◽  
Computational Fluid Dynamics Analysis

Study of Height Influence of Heat Exchanger Tanks on Overall Pressure Drop

2014 ◽  
Vol 659 ◽  
pp. 446-449
Author(s):  
Alexandru Rus ◽  
Vlad Martian ◽  
Mihai Nagi
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Heat Exchanger ◽  
Pressure Drop ◽  
Heat Exchangers ◽  
Structural Complexity ◽  
Complex Models ◽  
Water Cooler ◽  
Computational Resources ◽  
Viable Method

In the context of a constant demand of more compact and efficient heat exchangers, the need for thoroughly researching the influence of the construction parameters impact on heat exchanger's performances arises. The purpose of the paper is to present the numerical results of such a research, carried out at RAAL S.A. with the support of "Politehnica" University of Timişoara. The research consists of assessing the effects of the geometric characteristics, the height in particular, of the inlet and outlet tanks of a water cooler on overall pressure drop, through Computational Fluid Dynamics. The structural complexity of heat exchangers demands that the analysis be divided into multiple, less complex models, in order to achieve accurate and truthful results within a reasonable amount of time and use of computational resources. The paper also focuses on developing a viable method for accomplishing numerical analyses on heat exchangers' parameters.

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