A Study of Dropwise Condensation on the Ultra-Thin Polymer Surfaces

Ma, Xuehu; Xu, Dan; Lin, Jifang

doi:10.1615/ihtc10.600

Cited by 5 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Eq. (20) gives the population density for small drops n(r) which grow mainly by direct condensation and Eq. (24) gives the population density of larger drops N(r) which grow due to coalescence.…”

Section: Resultsmentioning

confidence: 99%

“…Organic materials [17][18][19] like hydrocarbons and polyvinylidene chloride coatings had also received considerable attention for their hydrophobic capabilities to promote DWC. Many researchers [20][21][22] have used different types of technologies to employ polymer coatings for promoting DWC and reported that heat transfer enhancements were up to 30 times higher than film condensation. Das et al [23] used an organic mono-layer coating and they concluded that SAM coatings increased the condensation heat transfer coefficient by a factor of 4.…”

Section: Literature Reviewmentioning

confidence: 99%

“…(19) gives the drop-size distribution for small drops n(r) which grow mainly by direct condensation for the region where r < r e and Eq. (20) gives the drop-size distribution of larger drops N(r) which grow due to coalescence for the region where, r > r e .…”

Section: Model Developmentmentioning

confidence: 99%

See 2 more Smart Citations

An experimental and theoretical study on the concept of dropwise condensation

Vemuri

Kim

2006

International Journal of Heat and Mass Transfer

140

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

An experimental and theoretical study on the concept of dropwise condensation

Vemuri

Kim

2006

International Journal of Heat and Mass Transfer

140

View full text Add to dashboard Cite

“…Fig. 1 Heat transfer measurements for dropwise condensation of steam at near-atmospheric pressure: 1, Schmidt et al (1930); 2, Nagle et al (1935); 3, Gnam (1937);4, Fitzpatrick et al (1939); 5, Shea and Krase (1940);6, Fatica and Katz (1949); 7, Kirschbaum et al (1951); 8, Hampson and Ozisik (1952); 9, Wenzel (1957); 10, Welch and Westwater (1961); 11, Le Fevre and Rose (1964); 12, Kast (1963); 13, Le Fevre and Rose (1965); 14, Tanner et al (1965a);15, Citakoglu (1966); 16, Griffith and Lee (1967); 17, Citakoglu and Rose (1968); 18, Graham (1969); 19, Wilmshurst and Rose (1970); 20, Tanasawa and Ochiai (1973); 21, Aksan and Rose (1973); 22, Stylianou and Rose (1980); 23, Ma et al (1994); 24, Leipertz and Koch (1998) Fig. 2 Dependence of heat transfer coefficient on heat flux for dropwise condensation of steam on copper at nearatmospheric pressure; promoter oleic acid (Wenzel (1957)) using relatively high surface tension organic fluids.…”

Section: -mentioning

confidence: 99%

Dropwise condensation theory and experiment: A review

Rose

2002

Proceedings of the Institution of Mechanical Engineers, Part A:

597

412

View full text Add to dashboard Cite

The paper reviews progress in dropwise condensation research from 1930 to the present. Particular attention is given to heat transfer measurements, theory, transition and effects of surface material. Although it has been known since the 1930s that heat transfer coefficients for dropwise condensation of steam are much higher than those for film condensation, there were, until the 1960s, wide discrepancies between the results of different investigators. Subsequently, more accurate measurements have shown good consistency and the mechanism and theory of the dropwise condensation have become better understood. There has been considerable controversy over the magnitude of the so-called ‘constriction resistance’ and the effect of the surface thermal conductivity on the heat transfer coefficient. The balance of evidence suggests that this is only significant at very low heat fluxes and for very small condensing surfaces. Measurements have also been made with sufficiently high cooling intensities to cover the range of dropwise to filmwise condensation transition. The detailed mechanism of transition is still not fully understood. Perhaps most importantly, the practical problem of promoting lasting dropwise condensation under industrial conditions remains to be solved despite considerable effort spanning more than 70 years.

show abstract

“…The surface wettability of solid surface was modified to realize the dropwise condensation [11]. Organic and polymer materials with low surface energy were used to promote DWC for their hydrophobic properties [12][13][14][15][16][17]. Das et al [18] applied an organic self-assembled monolayers coating to enhance the dropwise condensation heat-transfer by a factor of 4.…”

Section: Introductionmentioning

confidence: 99%