Design and Optimization of the Inlet Header Structure in Microchannel Heat Exchanger Based on Flow Distribution Uniformity

Zhang, Kaidi; Wei, Wei; Sun, Yuwei; Wu, Qiang; Tang, Min; Lu, Mingjian

doi:10.3390/app12136604

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…GA is a survival strategy of the fittest based on the theory of biological evolution and is often utilized in the optimization of practical engineering problems [54,55]. Its optimization process mainly includes selection, crossover, and mutation operations [56].…”

Section: Genetic Algorithmmentioning

confidence: 99%

Prediction and Optimization of Heat Transfer Performance of Premixed Methane Impinging Flame Jet Using the Kriging Model and Genetic Algorithm

Chen,

2024

Applied Sciences

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In practical applications, rapid prediction and optimization of heat transfer performance are essential for premixed methane impinging flame jets (PMIFJs). This study uses computational fluid dynamics (CFD) combined with a methane detailed chemical reaction mechanism (GRI–Mech 3.0) to study the equivalence ratio (Φ), Reynolds number (Re) of the mixture, and the normalized nozzle–to–plate distance (H/d) on the heat transfer performance of PMIFJs. Moreover, the Kriging model (KM) was used to construct a prediction model of PMIFJ heat transfer performance. A genetic algorithm (GA) was used to determine the maximum likelihood function (MLE) of the model parameters for constructing KM and identify the points with the maximum root mean square error (RMSE) as the new infilled points for surrogate–based optimization (SBO). Combining these methods to analyze the simulation results, the results show that the global heat transfer performance of PMIFJs is enhanced with the increase in Φ, the increase in Re, and the decrease in H/d. Sensitivity analysis points out that Re and Φ significantly affect enhanced heat transfer, while H/d has a relatively small effect. In addition, GA was also used to search for the optimal heat transfer performance, and the global heat transfer performance at specific conditions was significantly enhanced. This study deepens the understanding of the heat transfer mechanism of impinging flame jets and provides an efficient method framework for practical applications.

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Section: Genetic Algorithmmentioning

confidence: 99%

Prediction and Optimization of Heat Transfer Performance of Premixed Methane Impinging Flame Jet Using the Kriging Model and Genetic Algorithm

Chen,

2024

Applied Sciences

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“…Moreover, the heat transfer performance increased with the growth of amplitude and the decrease in wavelength. The flow distribution of a PCHE was studied in the literature [13]. The impacts of flow uniformity were suited by numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Design and Numerical Analysis of Recuperator for a Liquid Carbon Dioxide Energy Storage System

Liu,

Wang,

Song

et al. 2023

Applied Sciences

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A liquid carbon dioxide energy storage (LCES) system has the characteristic of compact structure and easy liquefaction. As a component of heat recovery in the LCES system, the recuperator plays a crucial role in influencing the round trip efficiency (RTE) of the energy storage system, but very little attention has been paid to it even though its operation conditions are quite different from other thermal systems. In this case, the thermal and hydraulic design of the recuperator in the LCES system was completed. The flow characteristics and thermal performance of the recuperator under design conditions were analyzed, and the effects of operating at various loads on the flow characteristics and thermal performance of the recuperator were investigated. It was found that from the inlet to the outlet, the resistance coefficient of CO2 on the cold side increased gradually while decreasing gradually on the hot side. Down the flow direction, the average temperature of CO2 on the cold side increased sharply, while decreasing slowly in the hot side. When the systems discharged with varying loads, the pressure drop increased along both channels, but the resistance coefficient decreased gradually on both channels. The heat transfer coefficient (HTC) increased gradually on both sides too. The Nusselt number (Nu) in the first half of the cold side did not change much, while increasing gradually in the second half, but it continued to increase on the hot side.

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Numerical investigation of novel manifold microchannel heat sinks with countercurrent regions

Zhang

Xin

et al. 2023

International Journal of Heat and Mass Transfer

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Design and Optimization of the Inlet Header Structure in Microchannel Heat Exchanger Based on Flow Distribution Uniformity

Cited by 3 publications

References 31 publications

Prediction and Optimization of Heat Transfer Performance of Premixed Methane Impinging Flame Jet Using the Kriging Model and Genetic Algorithm

Prediction and Optimization of Heat Transfer Performance of Premixed Methane Impinging Flame Jet Using the Kriging Model and Genetic Algorithm

Design and Numerical Analysis of Recuperator for a Liquid Carbon Dioxide Energy Storage System

Numerical investigation of novel manifold microchannel heat sinks with countercurrent regions

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