Dropwise and liquid-jet laminar flow of subcooled water falling over horizontal tube banks

Singh, Navdeep Sangeet; Stafford, Jason; Gao, Nan

doi:10.1016/j.ijheatmasstransfer.2023.123936

Cited by 3 publications

(1 citation statement)

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“…[43] This causes the liquid to expand into a thin jet or filament, and the liquid inside the jet is slower than at the surface, causing this phenomenon. [44] If the distance to the film surface becomes too large, a critical point is crossed. This leads to a slight disintegration of the jet and a reduction in positional accuracy during application.…”

Section: Investigation Of the Dispensing Parametersmentioning

confidence: 99%

Structuring Electrodes for Lithium‐Ion Batteries: A Novel Material Loss‐Free Process Using Liquid Injection

Bredekamp,

Gottschalk,

Peter

et al. 2024

Energy Tech

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One possible approach to improve the fast charging performance of lithium‐ion batteries (LIBs) is to create diffusion channels in the electrode coating. Laser ablation is an established method for creating such structures and improving the performance of conventional LIBs. However, this method has not yet been used in industrial battery production due to different reasons. The drawbacks of this method are thermal stress, loss of active material, and discontinuous process flow. Herein, a novel concept is presented that enables the structuring of electrodes by selectively introducing a secondary fluid into the wet coating of the electrode. This displaces the active material prior to drying, resulting in no loss of active material and maintaining mechanical integrity. This innovative process is being tested for graphite anodes on a lab scale. Initial results show that the process can create pores that are comparable to laser‐structured electrodes. There is no visible damage to the electrode and no decrease in mechanical strength due to the structuring is observed. By varying the process parameters, different pore geometries can be generated with continuous process control, which are visually measured in this work. There is also a noticeable increase in performance when fast‐charging these electrode anodes.

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Section: Investigation Of the Dispensing Parametersmentioning

confidence: 99%

Structuring Electrodes for Lithium‐Ion Batteries: A Novel Material Loss‐Free Process Using Liquid Injection

Bredekamp,

Gottschalk,

Peter

et al. 2024

Energy Tech

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show abstract

Comparative analysis of tube designs in heat exchangers: A numerical simulation study for enhanced thermal-flow efficiency, "optimizing wavy tubes bundle geometries for enhanced heat transfer in underwater applications"

Foual,

Sad Chemloul,

Chaib

et al. 2024

Numerical Heat Transfer, Part A: Applications

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A Review of Falling Film Evaporation Under Different Surface Structures and External Disturbances

Wan,

2025

J Enh Heat Transf

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Falling film evaporation has been proposed as a promising alternative to traditional pool boiling heat exchangers due to advantages such as lower pressure drop, heat transfer improvement, and refrigerant charge reduction. This paper provides a comprehensive review of recent advancements in falling film flow and heat transfer characteristics, specifically focusing on various surface structures, including smooth plates, corrugated plates, vertical tubes, and horizontal tubes. In the case of film flow on plates, this review highlights key aspects such as film thickness, film wave evolution, wettability, and heat transfer properties. The study further reviews findings on film flow along both the inner and outer surfaces of vertical tubes, as well as horizontal round tubes and non-round tubes. The enhanced tubes can be divided into tubes machined with fins and coated with material. Noteworthy findings regarding flow pattern transitions, film thickness, and heat transfer characteristics on horizontal tubes are comprehensively outlined. Furthermore, the impact of external disturbances on film flow and heat transfer is also reviewed. Finally, several challenges and prospective directions for future research are established.

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Dropwise and liquid-jet laminar flow of subcooled water falling over horizontal tube banks

Cited by 3 publications

References 40 publications

Structuring Electrodes for Lithium‐Ion Batteries: A Novel Material Loss‐Free Process Using Liquid Injection

Structuring Electrodes for Lithium‐Ion Batteries: A Novel Material Loss‐Free Process Using Liquid Injection

Comparative analysis of tube designs in heat exchangers: A numerical simulation study for enhanced thermal-flow efficiency, "optimizing wavy tubes bundle geometries for enhanced heat transfer in underwater applications"

A Review of Falling Film Evaporation Under Different Surface Structures and External Disturbances

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