Effectiveness of actively adjusting vapour-liquid in the evaporator for heat transfer enhancement

Li, Junjie; Chen, Jianyong; Chen, Ying; Luo, Xianglong; Liang, Yingzong; Yang, Zhi

doi:10.1016/j.applthermaleng.2021.117696

Cited by 9 publications

(2 citation statements)

References 33 publications

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“…In particular, Hanks et al [27] designed a profiled structure thermal management device to deal with ultra-high heat flux by using nano-sized pores to generate large negative pressure to allow for the continuous flow of liquid into nucleation points. Recently, Li et al [28] proposed an innovative method of regulating vapor-liquid to enhance flow boiling heat transfer.…”

Section: Introductionmentioning

confidence: 99%

The Rapid Boiling of Thin Liquid Films with Different Thicknesses on Nanochannel Copper Plates: A Molecular Dynamics Study

Wu,

Zeng,

et al. 2023

Coatings

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Boiling heat transfer on nanostructured surfaces presents great potential in cooling highly integrated microelectronic devices. Analysis of the factors affecting boiling heat transfer included the analysis of nanostructure and wettability, indicating that consideration of the influence of working liquid quantity is essential in finite spaces. Rapid boiling water films with various thicknesses placed on the same nanochannel copper plate were studied via molecular dynamics (MD) simulations. The simulation results reveal that the potential energy difference in the vapor–liquid coexisting region on the nanochannels was lower for thicker films, and the evaporation rate was lower. The effect of water film thickness on boiling heat transfer is closely related to the potential energy difference in the vapor–liquid coexisting region on the nanochannels. The heat transfer effect was the worst in case 1, where the water thickness was lower than the height of the nanochannels. This is because there is no guaranteed liquid replenishment at the nucleation points, although the potential energy difference was greatest in the vapor–liquid coexistence zone of case 1. Evaporation was the greatest in case 2, where the water film just covered the nanochannels because of the larger potential energy difference and sufficient liquid water replenishment. This study is of great significance for the analysis of the vapor–liquid flow mechanisms of micro/nanostructured surfaces and the improved design of thermal management equipment of micro/nano devices.

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Section: Introductionmentioning

confidence: 99%

The Rapid Boiling of Thin Liquid Films with Different Thicknesses on Nanochannel Copper Plates: A Molecular Dynamics Study

Wu,

Zeng,

et al. 2023

Coatings

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“…Li et al designed and analyzed a new mathematical model of a novel evaporator [9]. In the presented new approach, the main rules of the vapor-liquid adjustment evaporator, as well as an appropriated configuration were considered.…”

Section: Introductionmentioning

confidence: 99%

An α-Model Parametrization Algorithm for Optimization with Differential-Algebraic Equations

Drąg

2022

Applied Sciences

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An optimization task with nonlinear differential-algebraic equations (DAEs) was approached. In special cases in heat and mass transfer engineering, a classical direct shooting approach cannot provide a solution of the DAE system, even in a relatively small range. Moreover, available computational procedures for numerical optimization, as well as differential- algebraic systems solvers are characterized by their limitations, such as the problem scale, for which the algorithms can work efficiently, and requirements for appropriate initial conditions. Therefore, an αDAE model optimization algorithm based on an α-model parametrization approach was designed and implemented. The main steps of the proposed methodology are: (1) task discretization by a multiple-shooting approach, (2) the design of an α-parametrized system of the differential-algebraic model, and (3) the numerical optimization of the α-parametrized system. The computations can be performed by a chosen iterative optimization algorithm, which can cooperate with an outer numerical procedure for solving DAE systems. The implemented algorithm was applied to solve a counter-flow exchanger design task, which was modeled by the highly nonlinear differential-algebraic equations. Finally, the new approach enabled the numerical simulations for the higher values of parameters denoting the rate of changes in the state variables of the system. The new approach can carry out accurate simulation tests for systems operating in a wide range of configurations and created from new materials.

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Performance explorations of a novel high temperature heat pump with multi-adjusted compositions of zeotropic mixture

Huang,

Chen,

Chen

et al. 2023

Applied Thermal Engineering

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Effectiveness of actively adjusting vapour-liquid in the evaporator for heat transfer enhancement

Cited by 9 publications

References 33 publications

The Rapid Boiling of Thin Liquid Films with Different Thicknesses on Nanochannel Copper Plates: A Molecular Dynamics Study

The Rapid Boiling of Thin Liquid Films with Different Thicknesses on Nanochannel Copper Plates: A Molecular Dynamics Study

An α-Model Parametrization Algorithm for Optimization with Differential-Algebraic Equations

Performance explorations of a novel high temperature heat pump with multi-adjusted compositions of zeotropic mixture

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