Multi-objective optimization of arc-shaped ribs in the channels of a printed circuit heat exchanger

Lee, Sang Moon; Kim, Kwang‐Yong

doi:10.1016/j.ijthermalsci.2015.02.006

Cited by 51 publications

(10 citation statements)

References 16 publications

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“…Chai and Tassou [15] investigated the thermohydraulic performance of sCO 2 flow in a PCHE with straight channels and compared the local heat transfer and friction pressure drop results with predictions from empirical correlations. Kim et al [16], Lee and Kim [17,18], Kim et al [19], Lee et al [20], and Meshram et al [21] investigated the thermohydraulic performance of PCHEs with zigzag channels. The zigzag channels offer superior heat transfer enhancement compared to the straight channels but at the expense of higher pressure drop.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Evaluation of the Thermohydraulic Performance of Compact Recuperative Heat Exchangers in Supercritical Carbon Dioxide Waste Heat to Power Conversion Systems

Chai

Tassou

2021

Heat Transfer Engineering

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Compact recuperative heat exchangers are critical components in supercritical carbon dioxide (sCO 2 ) waste heat to power conversion systems. To investigate their thermohydraulic performance, a model based on the segmental design and the e-NTU method has been developed. Four different types of heat exchanger have been considered: printed circuit heat exchanger with straight channels (PCHE-SC); printed circuit heat exchanger with zigzag channels (PCHE-ZC); microtube heat exchanger (MTHE); and microtube heat exchanger with separator sheets (MTHE-SS). The performance of the heat exchangers for different fluid mass flow rates, temperatures, and lengths was investigated in terms of Nusselt number, heat transfer coefficient, friction factor, pressure drop, heat transfer rate, entropy generation rate, and augmentation entropy generation number. Results show that these parameters significantly impact on the thermohydraulic performance of compact recuperative heat exchangers and their optimal design. For the same operating conditions and equal heat transfer rate, PCHE-ZC and MTHE-SS can have a significantly smaller size than PCHE-SC and MTHE. The augmentation entropy generation number also demonstrates the improved performance and compactness that can arise from zigzag channels and separator sheets, making them suitable for demanding high pressure and temperature applications such as sCO 2 heat to power conversion systems.

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Section: Introductionmentioning

confidence: 99%

Modeling and Evaluation of the Thermohydraulic Performance of Compact Recuperative Heat Exchangers in Supercritical Carbon Dioxide Waste Heat to Power Conversion Systems

Chai

Tassou

2021

Heat Transfer Engineering

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“…Despite many studies in the realm of designing and optimization [13][14][15][16][17], it still lacks research on the heat transfer modification of corrugated channels and optimization methods. In this respect, Nobile et al [18] used the multi-objective genetic algorithm to do the optimization of two objectives, aiming to maximize the heat transfer rate and minimize the friction factor.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance optimization of a sinusoidal wavy channel with different phase shifts using artificial bee colony algorithm

Ramiar

Manavi

Yousefi-Lafouraki

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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In this article, heat transfer optimization of forced convection in a wavy channel with different phase shifts between the upper and lower wavy walls is represented. The flow is laminar in the range of (200 B Re B 800) and a uniform temperature of 350 K is considered in the wavy sections. The governing mass, momentum and energy equations are solved using the finite volume method. Different design parameters such as the channel height (h = 10, 15 and 20 mm), the amplitude of the wavy wall (A = 1.5, 2, 2.5 and 3 mm) and the phase shift of the upper wavy wall ð0 c 360 Þ are investigated. For optimization process, a recent method, named artificial bee colony (ABC) algorithm, is applied and compared with two other meta-heuristic algorithms, called particle swarm optimization (PSO) and differential evolution (DE). An ''in house'' code is developed which simultaneously uses the meta-heuristic algorithms and the computational fluid dynamics solver. The results indicate that ABC algorithm has higher accuracy and faster convergence rate than PSO and DE. The parameter considered for optimizing the average Nusselt number as the objective function was the phase shift. But, for optimizing the thermal performance factor, selected parameters were the wavy wall amplitude and the phase shift. The results showed that the maximum average Nusselt number is attained at c ¼ 250:2, A = 3 mm, h = 10 mm and Re = 800, in which the heat transfer rate has 96.6% enhancement rather than the parallel-plate channel. Also, it is found that c ¼ 283:3, A = 2.65 mm, h = 10 mm and Re = 800 are the optimized solutions to obtain the maximum thermal performance factor.

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“…Recent studies used optimization techniques based on the analysis using three-dimensional (3D) Reynoldsaveraged Navier-Stokes (RANS) equations to design better systems with lower computational cost for various thermo-fluid engineering applications (Kim & Kim, 2006;Kim & Lee, 2007;Lee & Kim, 2015). In most engineering designs, multi-objective optimization is required owing to multiple disciplines and objectives.…”

Section: Introductionmentioning

confidence: 99%

Shape optimization of a feedback-channel fluidic oscillator

Jeong

Kim

2017

Engineering Applications of Computational Fluid Mechanics

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In this study, a fluidic oscillator was optimized based on the three-dimensional unsteady Reynolds-averaged Navier-Stokes analysis to enhance peak jet velocity at the outlet and simultaneously reduce pressure drop. A multi-objective genetic algorithm performed the optimization with surrogate modeling. The ratios of the inlet nozzle width and the distance between the splitters to the throat width were chosen as the design variables. And, two objective functions related to peak jet velocity at the outlet and pressure drop through the fluidic oscillator were selected for the optimization. Ten design points were selected in the design space using a Latin hypercube sampling method; the objective functions were calculated by unsteady Reynolds-averaged Navier-Stokes analysis at these design points to construct surrogate models that were used to approximate the objective functions. Two different surrogate models, namely response surface approximation and Kriging models were tested. Pareto-optimal front representing a compromise between the two objective functions was obtained from the multi-objective optimization. The optimization results indicated that a jet velocity-oriented optimum design increased the peak jet velocity ratio at the outlet and the friction factor by 11.18% and 16.82%, respectively, when compared to those of a friction factor-oriented design.

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Multi-objective optimization of arc-shaped ribs in the channels of a printed circuit heat exchanger

Cited by 51 publications

References 16 publications

Modeling and Evaluation of the Thermohydraulic Performance of Compact Recuperative Heat Exchangers in Supercritical Carbon Dioxide Waste Heat to Power Conversion Systems

Modeling and Evaluation of the Thermohydraulic Performance of Compact Recuperative Heat Exchangers in Supercritical Carbon Dioxide Waste Heat to Power Conversion Systems

Thermal performance optimization of a sinusoidal wavy channel with different phase shifts using artificial bee colony algorithm

Shape optimization of a feedback-channel fluidic oscillator

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