Heat Exchanger Design, Analysis and Evaluation by Data-Driven Computational Fluid Dynamics

2021 ◽  
Author(s):  
Zhifeng Zhang ◽  
Yilun Chen ◽  
Jiefu Ma
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Heat Exchanger ◽  
Design Analysis ◽  
Data Driven ◽  
Analysis And Evaluation ◽  
Heat Exchanger Design

Heat Exchanger Design, Analysis and Evaluation by Data-Driven Computational Fluid Dynamics

2020 ◽  
Author(s):  
Zhifeng Zhang ◽  
Yilun Chen ◽  
Jiefu Ma
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Heat Exchanger ◽  
High Efficiency ◽  
Design Analysis ◽  
Data Driven ◽  
Data Generation ◽  
Analysis And Evaluation ◽  
Heat Exchanger Design ◽  
Machine Learning Model

Abstract Heat exchanger design, analysis and evaluation are traditionally based on experimental data, empirical relationships and theoretical equations. Recently, due to the recent development of data-driven computational fluid dynamics, we are able to conduct “smart” analysis based on a large amount of data. In the present research, we developed a fast CFD data generation method. Based on the large amount of data, we developed two data-driven models: 1) a machine learning model that can predict the heat transfer behavior, and 2) a tree-based model that can capture the feature importance. This methodology can potentially be applied to future high-efficiency heat exchanger designs.

The Effect of Fin Geometry on Design of Compact Off-Set Strip Fin High Temperature Heat Exchanger

2005 ◽  
Author(s):  
Sundaresan Subramanian ◽  
Valery Ponyavin ◽  
Clayton Ray De Losier ◽  
Yitung Chen ◽  
E. Hechanova ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Heat Exchanger ◽  
Transfer Enhancement ◽  
Heat Exchanger Design ◽  
Helium Gas ◽  
Temperature Heat ◽  
Overall Performance ◽  
Offset Strip Fin

This paper deals with the development of a three-dimensional numerical model to predict the overall performance of an advanced high temperature heat exchanger design, up to 1000°C, for the production of hydrogen by the sulfur iodine thermo-chemical cycle used in advanced nuclear reactor concepts. The design is an offset strip-fin, hybrid plate compact heat exchanger made from a liquid silicon impregnated carbon composite material. The two working fluids are helium gas and molten salt (Flinak). The offset strip-fin is chosen as a method of heat transfer enhancement due to the boundary layer restart mechanism between the fins that has a direct effect on heat transfer enhancement. The effects of the fin geometry on the flow field and heat transfer are studied in three-dimensions using Computational Fluid Dynamics (CFD) techniques. The pre-processor GAMBIT is used to create a computational mesh, and the CFD software package FLUENT that is based on the finite volume method is used to produce the numerical results. Fin dimensions need to be chosen that optimize heat transfer and minimize pressure drop. Comparison of the overall performance between two fin shapes (rectangular versus curved edges) is performed using computational fluid dynamics techniques. Fin and channel dimensions need to be chosen such as to optimize heat transfer performance and minimize pressure drop. The study is conducted with helium gas and liquid salt as the working fluids with a variety of Reynolds number values and fin dimensions. Both laminar and turbulent modeling is performed for the helium side fluid flow. The effect of the fin geometry is performed computational fluid dynamics techniques and optimization studies are performed. The model developed in this paper is used to investigate the heat exchanger design parameters in order to find an optimal design.

Design Considerations for Compact Ceramic Off-Set Strip Fin High Temperature Heat Exchangers

2005 ◽  
Author(s):  
Sundaresan Subramanian ◽  
Roald Akberov ◽  
Clayton Ray DeLosier ◽  
Yitung Chen ◽  
Anthony E. Hechanova ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
High Temperature ◽  
Heat Exchanger ◽  
Transfer Enhancement ◽  
Heat Exchanger Design ◽  
Temperature Heat ◽  
Overall Performance ◽  
Offset Strip Fin

This paper deals with the development of a three-dimensional numerical model to predict the overall performance of an advanced high temperature heat exchanger design, up to 1000°C, for the production of hydrogen by the sulfur iodine thermo-chemical cycle used in advanced nuclear reactor concepts. The design is an offset strip-fin, hybrid plate compact heat exchanger made from a liquid silicon impregnated carbon composite material. The two working fluids are helium gas and molten salt (Flinak). The offset strip-fin is chosen as a method of heat transfer enhancement due to the boundary layer restart mechanism between the fins that has a direct effect on heat transfer enhancement. The effects of the fin geometry on the flow field and heat transfer are studied in three-dimensions using Computational Fluid Dynamics (CFD) techniques. The pre-processor GAMBIT is used to create a computational mesh, and the CFD software package FLUENT that is based on the finite volume method is used to produce the numerical results. Fin dimensions need to be chosen that optimize heat transfer and minimize pressure drop. Comparison of the overall performance between two fin shapes (rectangular versus curved edges) is performed using analytical calculations (where available) as well as computational fluid dynamics techniques. The analytical calculations predict larger pressure losses than the numerical simulations. The model developed in this paper will be used to investigate the heat exchanger design parameters in order to find an optimal design.

scholarly journals CFD Application on Shell and Double Concentric Tube Heat Exchanger

2019 ◽  
Vol 25 (2) ◽  
pp. 136-150
Author(s):  
Basma Abbas Abdulmajeed ◽  
Hawraa Riyadh Jawad
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Heat Exchanger ◽  
Cold Water ◽  
Percentage Error ◽  
Outlet Temperature ◽  
Discrete Elements ◽  
Tube Heat Exchanger ◽  
Heat Exchanger Design ◽  
Solid Works

This work is concerned with the design and performance evaluation of a shell and double concentric tubes heat exchanger using Solid Works and ANSY (Computational Fluid Dynamics). Computational fluid dynamics technique which is a computer-based analysis is used to simulate the heat exchanger involving fluid flow, heat transfer. CFD resolve the entire heat exchanger in discrete elements to find: (1) the temperature gradients, (2) pressure distribution, and (3) velocity vectors.  The RNG k-ε model of turbulence is used to determining the accurate results from CFD. The heat exchanger design for this work consisted of a shell and eight double concentric tubes. The number of inlets are three and that of outlets are also three for all the fluids that pass through the heat exchanger. A comparison was made for the numerical and experimental results and it was found that the percentage error for the hot oil outlet temperature was (6.8%) and the percentage error was (- 21%) for cold water outlet temperature.  

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