Dropwise condensation of steam on ion implanted condenser surfaces

Zhao, Qinyu; Burnside, B. M.

doi:10.1016/0890-4332(94)90055-8

Cited by 55 publications

(25 citation statements)

References 5 publications

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“…Zhao and Burnside [5] implanted PTFE coated tube surfaces with Cr + and obtained heat transfer coefficients five times larger than those of unimplanted tubes. The method of simultaneous magnetron sputtering ion-plating of Cr + and N + and then of CH 4 in copper U-tubes [6] and C 2 H 6 in white copper (70%Cu:30%Ni) U-tubes [7] produced excellent DWC of steam.…”

Section: Introductionmentioning

confidence: 93%

“…If the implanted elements have a sufficiently high kinetic energy, the interatomic bond energy of the surface layer will be decreased and hence, U surf will be reduced. The higher the kinetic energy of the elements implanted, the more is the decrease in the surface free energy of the implanted surface [5]. The surface free energy depends on the chemical valence and the ionic radius of the positive ions implanted.…”

Section: Reduction Of the Surface Energy Of Metals By Ion Implantationmentioning

confidence: 99%

“…Greek symbols c surface energy (N m À1 ) q density (kg m À3 ) n dimensionless variable in Petukhov-Popow equation (7) [5], consequently the surface free energy c surf of the amorphous state metal is lower than that one of the crystalline state metal, which can be seen by…”

Section: Reduction Of the Surface Energy Of Metals By Ion Implantationmentioning

confidence: 99%

“…The Petukhov-Popov correlation is valid for fully developed turbulent flow inside a smooth tube. The range of validity includes Re = 10 4 -10 6 and Pr = 0.5-2000. The prediction of h cw by Eq.…”

Section: Data Evaluation -Heat Transfer Coefficientmentioning

confidence: 99%

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Experimental study of dropwise condensation on plasma-ion implanted stainless steel tubes

Kananeh

Rausch

Fröba

et al. 2006

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 93%

Section: Reduction Of the Surface Energy Of Metals By Ion Implantationmentioning

confidence: 99%

Section: Reduction Of the Surface Energy Of Metals By Ion Implantationmentioning

confidence: 99%

Section: Data Evaluation -Heat Transfer Coefficientmentioning

confidence: 99%

See 2 more Smart Citations

Experimental study of dropwise condensation on plasma-ion implanted stainless steel tubes

Kananeh

Rausch

Fröba

et al. 2006

International Journal of Heat and Mass Transfer

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“…The Electric Double Layer theory states that if an element with weak metal properties (e.g. F, H, Si, C…) is implanted into a surface; both the free electrons on the surface and the surface energy will be reduced [109]. In addition, the dose and ion implantation energy both have a significant effect on the surface energy and adhesion of the modified surface [108].…”

Section: Ion Implantationmentioning

confidence: 99%

Design of intelligent surfaces for energy intensive processing industry

2018

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Abstract.There are three different factors that can affect adhesion: the process fluid, the processing conditions and the surface of the processing equipment. Of these three factors, the surface properties of the processing equipment are the factor that offers the greatest opportunity for manipulation. The two key surface properties that have been identified to reduce adhesion are the surface energy and the surface topography. The surface energy of a material determines its degree of wettability and, a surface's affinity for water. In previous studies the surface energy of materials have been leveraged in order to create a surface with reduced levels of fouling through surface modification or the addition of polymer coatings with varying degrees of hydrophobicity. In addition, the topography of surfaces has been modified to reduce the level of particle adhesion. These modifications involve creating either a structured or random porous microstructure on the surface. Additional methods identified to reduce fouling include the application of liquid infused porous surfaces at low shear conditions and the use of non-contact heating through techniques such as microwave processing.

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Dropwise Condensation on Advanced Functional Surfaces – Theory and Experimental Setup

2017

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Dedicated to Professor Rüdiger Lange on the occasion of his 65th birthdayCompared to filmwise condensation on conventional condenser surfaces, heat transfer can be significantly enhanced by tuning the wettability of the surface to promote dropwise condensation. Following rapid advances in surface engineering, the last years have seen an unprecedented interest in dropwise condensation research. This brief review highlights recent advances in theory and experimental investigation regarding dropwise condensation on smooth hydrophobic surfaces, micro-and nanostructured superhydrophobic surfaces, biphilic surfaces with patterned wettability, and lubricant-infused surfaces.

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Dropwise condensation of steam on ion implanted condenser surfaces

Cited by 55 publications

References 5 publications

Experimental study of dropwise condensation on plasma-ion implanted stainless steel tubes

Experimental study of dropwise condensation on plasma-ion implanted stainless steel tubes

Design of intelligent surfaces for energy intensive processing industry

Dropwise Condensation on Advanced Functional Surfaces – Theory and Experimental Setup

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