Experiments and modeling on cryogenic quenching enhancement by the structured capillary-porous coatings of surface

Starodubtseva, I. P.; Кузнецов, Д. В.; Павленко, А. Н.

doi:10.1016/j.ijheatmasstransfer.2021.121388

Cited by 21 publications

(8 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To solve the problem of heat transfer intensification, the use of low-temperature plasma has a few examples [100][101][102][103][104]. The use of low-temperature plasma when modifying a heat exchange surface makes it possible to change the physicochemical properties of surfaces, primarily wettability, which has a significant effect on the intensification of boiling and condensation.…”

Section: Modification Of the Heat Transfer Surface By Plasmamentioning

confidence: 99%

“…The high-speed video showed that the mechanisms of heat transfer enhancement differ significantly depending on the properties of the liquid and the morphology of the coatings. The study of a capillary-porous coating obtained by plasma spraying in [104] revealed the effect of structured coatings on cryogenic quenching by a falling liquid nitrogen film. Experiments on cryogenic hardening were carried out on a vertical copper plate with a bare surface and on surfaces with different orientations of the coating protrusions.…”

Section: Modification Of the Heat Transfer Surface By Plasmamentioning

confidence: 99%

See 1 more Smart Citation

Heat Transfer on Micro and Nanostructured Rough Surfaces Synthesized by Plasma

Дедов

Budaev

2022

Symmetry

View full text Add to dashboard Cite

The review summarizes recent experimental results of studying heat transfer on rough surfaces synthesized by plasma. The plasma-surface interaction leads to the stochastic clustering of the surface roughness with a high specific area breaking the symmetry of the virgin surface of the initial crystalline materials. Such a surface is qualitatively different from the ordinary Brownian surface. The micro- and nanostructured surface consist of pores, craters, and nanofibers of size from tens of nanometers to tens of microns, which can provide new heat transfer properties related to a violation of the symmetry of the initial materials. In recent years, new results have been obtained in the study of heat transfer during phase change on plasma-modified surfaces in relation to energy, chemical, and cryogenic technologies. The objective of the review is to describe the specific structure of refractory metals after high-temperature plasma irradiation and the potential application of plasma processing of materials in order to create heat exchange surfaces that provide a significant intensification of two-phase heat transfer. Refractory metals with such a highly porous rough surface can be used as plasma-facing components for operation under extreme heat and plasma loads in thermonuclear and nuclear reactors, as catalysts for hydrogen production, as well as in biotechnology and biomedical applications.

show abstract

Section: Modification Of the Heat Transfer Surface By Plasmamentioning

confidence: 99%

Section: Modification Of the Heat Transfer Surface By Plasmamentioning

confidence: 99%

Heat Transfer on Micro and Nanostructured Rough Surfaces Synthesized by Plasma

Дедов

Budaev

2022

Symmetry

View full text Add to dashboard Cite

show abstract

“…Works of the authors [138][139][140][141][142][143][144][145][146][147][148][149] study regularities of heat transfer during evaporation, boiling, and decay of falling nitrogen films, accompanied by development of crisis phenomena at unsteady heat release and unsteady cooling of strongly overheated bodies by falling nitrogen films. The results of experimental investigations of the dynamics of heat transfer and critical phenomena in falling wavy films of nitrogen at unsteady heat release from the surface of a thin-walled heater are presented in [138,139].…”

Section: Heat Transfer Enhancement and Increase In Critical Heat Flux At Film Flowsmentioning

confidence: 99%

“…Analysis of the map suggests that boiling-up becomes the prevailing decay mechanism independently on the heat flux density when the inlet Reynolds number Re in exceeds 130-220 depending on the liquid and heater parameters. Studies [143,146,148,149] demonstrate that the use of micro-structured capillary-porous [146,148,149] and low-thermal conductivity coatings [143] significantly changes the temporal dependence of the cooling rate and can reduce the total cooling time more than 4-6 times depending on the degree of irrigation (see Figs. 20 and 21).…”

Section: Heat Transfer Enhancement and Increase In Critical Heat Flux At Film Flowsmentioning

confidence: 99%

Development of Methods for Heat Transfer Enhancement During Nitrogen Boiling to Ensure Stabilization of HTS Devices

Павленко

Кузнецов

2021

J. Engin. Thermophys.

View full text Add to dashboard Cite

The paper presents a brief analysis of current achievements and key issues in the field of heat transfer and critical heat flux enhancement during boiling of cryogenic liquids and freons under various heat release laws via micro-structuring of the heat-generating surface. A review of new experimental data on the efficiency of heat transfer and critical heat flux enhancement during pool boiling via new micro-structured capillary-porous coatings created by plasma sputtering and selective laser melting/sintering (3D printing) is presented. The results of analysis of the efficiency of heat transfer and critical heat flux during boiling on heat-generating surfaces with micro-textures of different shapes and micro-profiling created by micro-deforming cutting are presented. New results obtained during nitrogen boiling under various hydrodynamical conditions on the mechanisms of sharp increase in the rate of non-stationary cooling of plates with new structured capillary-porous or low-heat-conductivity coatings with certain parameters are discussed. New results on the degree of heat transfer enhancement during boiling of liquids on micro-structured surfaces modified by the method of micro-arc oxidation are presented.

show abstract

“…The purpose of this research is to conduct a steel rolling study medium carbon with a treatment temperature above recrystallization, rolling rate, sintering time, cooling medium as an effort to develop and design new innovations about steel structures being rolled [12]. The purpose of this research is to conduct a study of rolling using medium carbon steel with a treatment temperature above recrystallization, rolling rate, sintering time, cooling media as an effort to develop and design new innovations about steel structures being rolled undergoing the rolling process with treatment of rolling rate, sintering time and air conditioning media [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of Dredging Rate, Sintering Time, Cooling Media on Corrosion Results of Carbon Steel Dredging

Irawan¹

2021

ijseit

View full text Add to dashboard Cite

Metal reinforcement that has an impact on improving mechanical properties can occur in various ways, including by strain hardening mechanisms, solid solutions, second phase, prespitations, disperse, grain refinement and texture. In recent years, another method has been developed to obtain good mechanical properties without adding alloy elements, namely by the method of comprehensive plastic deformation (Severe Plastic Deformation). The purpose of this research is to conduct a study of rolling using medium carbon steel with a treatment temperature above recrystallization, rolling rate, sintering time, cooling media as an effort to develop and design new innovations about steel structures being rolled. The study of developing rolling techniques that can be applied in industry and can be applied as learning material / media in higher education requires structured research stages. The best impact value from this temper process is a temperature of 550 ° C for 1 hour where the impact value is 1.58 J / mm² with air conditioning media. In the rolling process above the recrystallization temperature 800 ° C deformation 20% the impact value is 1.7 J / mm² where the toughness indicates a ductile fracture while the deformation is 10% the impact value

show abstract

Experiments and modeling on cryogenic quenching enhancement by the structured capillary-porous coatings of surface

Cited by 21 publications

References 37 publications

Heat Transfer on Micro and Nanostructured Rough Surfaces Synthesized by Plasma

Heat Transfer on Micro and Nanostructured Rough Surfaces Synthesized by Plasma

Development of Methods for Heat Transfer Enhancement During Nitrogen Boiling to Ensure Stabilization of HTS Devices

Effect of Dredging Rate, Sintering Time, Cooling Media on Corrosion Results of Carbon Steel Dredging

Contact Info

Product

Resources

About