Multi-objective optimization of microchannel heatsink with wavy microtube by combining response surface method and genetic algorithm

Jahanbakhshi, Akram; Nadooshan, Afshin Ahmadi; Bayareh, Morteza

doi:10.1016/j.enganabound.2022.04.004

Cited by 18 publications

(2 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The factor interaction diagram describes the change trend of the response value caused by another factor changes from a low level to a high level when one factor is at a low or high level, whereas the dotted line is the parallel line, indicating that the two factors have no interaction, and the solid line indicates that the two factors have interaction. The Pareto diagram can describe independent variables and the normalization effect between them, in which the column length represents the normalization effect of each parameter term on the response, including the first term, the second term, and their cross terms. , Moreover, the greater the standardization effect, the more significant the influence of the parameter item. It needs to be noted that the positive and negative signs at the top of each bar chart represent the positive and negative values of the estimated values of the corresponding parameters.…”

Section: Resultsmentioning

confidence: 99%

“…The Pareto diagram can describe independent variables and the normalization effect between them, in which the column length represents the normalization effect of each parameter term on the response, including the first term, the second term, and their cross terms. 33 , 34 Moreover, the greater the standardization effect, the more significant the influence of the parameter item. It needs to be noted that the positive and negative signs at the top of each bar chart represent the positive and negative values of the estimated values of the corresponding parameters.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Optimizing the Preparation Process of Refined Asphalt Based on the Response Surface and Preparation of Needle Coke

Wei,

Jiang

2024

ACS Omega

View full text Add to dashboard Cite

Refined asphalt was prepared by solvent extraction sedimentation based on the response surface design, using washing oil and kerosene as solvents and the coal tar pitch as raw materials. The mathematical models of the refined asphalt yield, quinoline insoluble (QI) content, ash content, solvent-to-oil ratio, aromaticto-aliphatic hydrocarbon ratio, extraction temperature, and sedimentation time were proposed, analyzing the influence of each factor and their interactions on the response values. Therefore, the optimal combination of preparation process parameters and better operation window was obtained by optimizing the experiment. Meanwhile, refined asphalt with high QI content and low QI content was selected as raw material, and the needle coke was prepared through the process of carbonization and calcination. The influence of QI content on the composition and the structure of green coke and needle coke was investigated by X-ray diffraction (XRD), Raman spectra, and polarizing microscopy characterizations. The results showed that the solvent-to-oil ratio is 1.2, aromatic-to-aliphatic hydrocarbon ratio is 1.1, sedimentation time is 2 h, and extraction temperature is 110 °C, resulting in the yield of refined asphalt being 76%, QI content being less than 0.1%, and ash content being less than 0.05%, which meets the requirement of the high-quality needle coke. Otherwise, refined asphalt with lower QI content easily generates a mesophase with more fibers and a large structure in the thermal conversion process, and the corresponding green coke and needle coke have a relatively regular carbon microcrystalline structure.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%