scholarly journals Performing multiobjective optimization on perforated plate matrix heat exchanger surfaces using genetic algorithm

Author(s):  
Anish K. John ◽  
K. Krishnakumar
2021 ◽  
Vol 24 (1) ◽  
pp. 29-40
Author(s):  
Claudia Bogdan ◽  
Catalin Brill ◽  
Oleksandr Sirosh ◽  
Mihai Vijulie ◽  
Alin Lazar

While the basic principles of thermodynamics have remained the same, the necessity for heat exchangers to have good effectiveness in a small volume is constantly growing. Heat exchangers type Matrix Heat Exchanger (MHE), which can meet these requirements, does not have an optimal design variant for its use. These heat exchangers have been approached for 60 years, by many researchers, currently offering only an overview of the process. The mechanism of heat transfer in a matrix heat exchanger is complex, having three different thermal convection paths as well as thermal conduction through two different surfaces. This paper presents the simulations performed in ANSYS Workbench, combining all these heat transfer modes, for developing an optimal model of a perforated plate matrix heat exchanger, used for the pre-cooling of a hydrogen isotopes stream mixture, for purification purposes, as well as, for preparing the inlet temperature in cryogenic distillation columns of hydrogen isotopes.


2019 ◽  
Vol 23 (1) ◽  
pp. 11-21
Author(s):  
Mladen Tomic ◽  
Predrag Zivkovic ◽  
Biljana Milutinovic ◽  
Mica Vukic ◽  
Aleksandar Andjelkovic

The need for compact heat exchangers has led to the development of many types of surfaces that enhance the rate of heat transfer, among them the matrix heat exchangers. These heat exchangers consist of a series of perforated plates mutually separated and sealed by spacers. The goal of this research was to investigate the heat transfer process of matrix heat exchangers on the air side, at the close to ambient conditions. The research was conducted in two directions ? experimental research and CFD research. The experimental investigation was carried out over a perforated plate package with the porosity of 25.6%. The air/water matrix heat exchanger was heated by hot water and was installed in an experimental chamber at which entrance was a fan with the variable flow rate and heated by hot water. The thermocouples were attached to the surface of the perforated plate at the upwind and downwind sides, as well as at the inlet and the outlet of the chamber. During each experiment, the thermocouple readings and the air and water-flow and temperatures were recorded. In the numerical part of the research, the matrix heat exchangers with different plate porosity from 10 to 50% were investigated. The results of the numerical simulations were validated against the experimental results. On the basis of the experimental and numerical results, equations for heat transfer as the function of Reynolds number and geometrical parameters was established.


Cryogenics ◽  
2009 ◽  
Vol 49 (9) ◽  
pp. 482-489 ◽  
Author(s):  
Chen Shuangtao ◽  
Hou Yu ◽  
Zhao Hongli ◽  
Xi Lan

2011 ◽  
Vol 6 (1) ◽  
pp. 192-202 ◽  
Author(s):  
Hongli ZHAO ◽  
Yu HOU ◽  
Xuemei SU ◽  
Qiaoyu ZHANG

Author(s):  
Tommaso Selleri ◽  
Behzad Najafi ◽  
Fabio Rinaldi ◽  
Guido Colombo

In the present paper a mathematical model for a mini-channel heat exchanger is proposed. Multiobjective optimization using genetic algorithm is performed in the next step in order to obtain a set of geometrical design parameters, leading to minimum pressure drops and maximum overall heat transfer coefficient. Multiobjective optimization procedure provides a set of optimal solutions, called Pareto front, each of which is a trade-off between the objective functions and can be freely selected by the user according to the specifications of the project. A sensitivity analysis is also carried out to study the effects of different geometrical parameters on the considered functions. The whole system has been modeled based on advanced experimental correlations in matlab environment using a modular approach.


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