GENETIC ALGORITHM MULTIOBJECTIVE OPTIMIZATION OF A THERMAL SYSTEM WITH THREE HEAT TRANSFER ENHANCEMENT CHARACTERISTICS

2020 ◽  
Vol 27 (2) ◽  
pp. 123-141
Author(s):  
Reza Beigzadeh ◽  
Smith Eiamsa-ard
Keyword(s):  
Heat Transfer ◽  
Genetic Algorithm ◽  
Multiobjective Optimization ◽  
Heat Transfer Enhancement ◽  
Thermal System ◽  
Transfer Enhancement

Entropy-based Optimization for Heat Transfer Enhancement in Tubes with Helical Fins

2021 ◽  
Author(s):  
Bharath Pidaparthi ◽  
Peiwen Li ◽  
Samy Missoum
Keyword(s):  
Heat Transfer ◽  
Optimal Design ◽  
Multiobjective Optimization ◽  
Heat Transfer Enhancement ◽  
Point Of View ◽  
Design Solution ◽  
Total Entropy ◽  
Transfer Enhancement ◽  
Pressure Drops ◽  
Conflicting Objectives

Abstract In this work, a tube with internal helical fins is analyzed and optimized from an entropy generation point of view. Helical fins, in addition to providing heat transfer enhancements, have the potential to level the temperature of the tube under non-uniform circumferential heating. The geometric parameters of helical fins are optimized under two different entropy-based formulations. Specifically, this work focuses on comparing the optimal design solution obtained through the minimization of total entropy and through the multiobjective optimization of the thermal and viscous entropy contributions when considered as two separate objectives. The latter quantities being associated with heat transfer and pressure drops, it is shown that, from a design optimization point of view, it is important to separate both entropies which are conflicting objectives.

scholarly journals Genetic algorithm-based heat transfer enhancement technique of a protruded micro-channel

2019 ◽  
Vol 23 (Suppl. 3) ◽  
pp. 727-735
Author(s):  
Ke Yang ◽  
Zhaoli Zheng ◽  
Di Zhang
Keyword(s):  
Heat Transfer ◽  
Genetic Algorithm ◽  
Objective Function ◽  
Heat Transfer Enhancement ◽  
Thermal Performance ◽  
Micro Channel ◽  
Optimal Solutions ◽  
Transfer Enhancement ◽  
Flow Rates ◽  
Passive Flow Control

As an innovative type of passive flow control structure, the protrusion exhibits great potential for heat transfer enhancement. In this paper, genetic algorithm is used for the dimensional optimization of a protruded micro-channel. The protruded micro-channel is studied at four mass-flow rates. In all the cases, thermal performance is selected as the objective function that represents both heat transfer and flow friction. The radius of the protrusion and the distance are selected as the two optimized parameters, and their ranges are decided by physical topologies. The objective function thermal performance is calculated by an auto-CFD batch program. The results shows that there are two peaks of thermal performance values when R and ? change in the cases with flow rates equaling 4 ? 10?5 kg/s and 6 ? 10?5 kg/s, while at the other two flow rates, the thermal performance values increase monotonously. The global optimal solutions for the four flow rates and two local optimal solutions are given in this research, and it is helpful to choose the best design variables to achieve the highest thermal performance. It also can be found that at all the different flow rates, the optimized shape of micro-channel has the same point that (R-?) is nearly 45 ?m in the studied ranges of optimized parameters.

Review of Photovoltaic/Thermal System Design and Heat Transfer Enhancement Methods

2014 ◽  
Vol 695 ◽  
pp. 753-756
Author(s):  
Azizul Mohamad ◽  
Nasrul Amri Mohd Amin ◽  
Wei Choon Chong ◽  
Mohd Shukry Abdul Majid ◽  
Ruslizam Daud
Keyword(s):  
Heat Transfer ◽  
Energy Source ◽  
Heat Transfer Enhancement ◽  
Photovoltaic System ◽  
Operating Efficiency ◽  
Design Criteria ◽  
Thermal System ◽  
Transfer Enhancement ◽  
Photovoltaic Thermal System ◽  
Future Work

Solar energy is a viable renewable energy source, and photovoltaic technology has mature significantly in recent years. To maintain the operating efficiency of photovoltaic system, heat must be remove from its surface, thus lead to development of photovoltaic/thermal system. This paper identify several key design criteria as well as heat transfer enhancement methods that is currently existed, and some future work is proposed to optimize the system.

Heat Transfer Enhancement in Spirally Corrugated Tube

2014 ◽  
Vol 7 (6) ◽  
pp. 970 ◽  
Author(s):  
Tholudin Mat Lazim ◽  
Zaid Sattar Kareem ◽  
M. N. Mohd Jaafar ◽  
Shahrir Abdullah ◽  
Ammar F. Abdulwahid
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Enhancement ◽  
Transfer Enhancement ◽  
Corrugated Tube
Sign in / Sign up

Export Citation Format

Share Document