Submicron-scale condensation on hydrophobic and hydrophilic surfaces

Yutaka Yamada, Tatsuya Ikuta, Takashi Nishiyama, Koji Takahashi, Yasuyuki Takata

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Condensation heat transfer is a widely-used technique for industrial applications represented by heat exchanger because of its high heat transfer coefficient. To enhance its performance, a suitable surface is required, where both condensation and droplet removal smoothly occur. In this study, we compared wettability of a graphene surface and an amorphous carbon surface. The result shows that an amorphous carbon surface is more hydrophilic. Then we prepared a graphite surface which has nanoscale hydrophilic regions in large hydrophobic area. We observed the submicron-scale droplet condensation occurs preferentially on the hydrophilic graphite step by using environmental scanning electron microscope (ESEM).

Original languageEnglish
Title of host publicationSafety, Reliability and Risk; Virtual Podium (Posters)
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Print)9780791856444
DOIs
Publication statusPublished - Jan 1 2013
EventASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013 - San Diego, CA, United States
Duration: Nov 15 2013Nov 21 2013

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume15

Other

OtherASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013
CountryUnited States
CitySan Diego, CA
Period11/15/1311/21/13

Fingerprint

Condensation
Amorphous carbon
Graphite
Graphene
Heat transfer coefficients
Industrial applications
Heat exchangers
Wetting
Electron microscopes
Heat transfer
Scanning

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

Yamada, Y., Ikuta, T., Nishiyama, T., Takahashi, K., & Takata, Y. (2013). Submicron-scale condensation on hydrophobic and hydrophilic surfaces. In Safety, Reliability and Risk; Virtual Podium (Posters) (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 15). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2013-66186

Submicron-scale condensation on hydrophobic and hydrophilic surfaces. / Yamada, Yutaka; Ikuta, Tatsuya; Nishiyama, Takashi; Takahashi, Koji; Takata, Yasuyuki.

Safety, Reliability and Risk; Virtual Podium (Posters). American Society of Mechanical Engineers (ASME), 2013. (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 15).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yamada, Y, Ikuta, T, Nishiyama, T, Takahashi, K & Takata, Y 2013, Submicron-scale condensation on hydrophobic and hydrophilic surfaces. in Safety, Reliability and Risk; Virtual Podium (Posters). ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), vol. 15, American Society of Mechanical Engineers (ASME), ASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013, San Diego, CA, United States, 11/15/13. https://doi.org/10.1115/IMECE2013-66186
Yamada Y, Ikuta T, Nishiyama T, Takahashi K, Takata Y. Submicron-scale condensation on hydrophobic and hydrophilic surfaces. In Safety, Reliability and Risk; Virtual Podium (Posters). American Society of Mechanical Engineers (ASME). 2013. (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)). https://doi.org/10.1115/IMECE2013-66186
Yamada, Yutaka ; Ikuta, Tatsuya ; Nishiyama, Takashi ; Takahashi, Koji ; Takata, Yasuyuki. / Submicron-scale condensation on hydrophobic and hydrophilic surfaces. Safety, Reliability and Risk; Virtual Podium (Posters). American Society of Mechanical Engineers (ASME), 2013. (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)).
@inproceedings{326ad355b9814015b4136bcf0da9fcc8,
title = "Submicron-scale condensation on hydrophobic and hydrophilic surfaces",
abstract = "Condensation heat transfer is a widely-used technique for industrial applications represented by heat exchanger because of its high heat transfer coefficient. To enhance its performance, a suitable surface is required, where both condensation and droplet removal smoothly occur. In this study, we compared wettability of a graphene surface and an amorphous carbon surface. The result shows that an amorphous carbon surface is more hydrophilic. Then we prepared a graphite surface which has nanoscale hydrophilic regions in large hydrophobic area. We observed the submicron-scale droplet condensation occurs preferentially on the hydrophilic graphite step by using environmental scanning electron microscope (ESEM).",
author = "Yutaka Yamada and Tatsuya Ikuta and Takashi Nishiyama and Koji Takahashi and Yasuyuki Takata",
year = "2013",
month = "1",
day = "1",
doi = "10.1115/IMECE2013-66186",
language = "English",
isbn = "9780791856444",
series = "ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)",
publisher = "American Society of Mechanical Engineers (ASME)",
booktitle = "Safety, Reliability and Risk; Virtual Podium (Posters)",

}

TY - GEN

T1 - Submicron-scale condensation on hydrophobic and hydrophilic surfaces

AU - Yamada, Yutaka

AU - Ikuta, Tatsuya

AU - Nishiyama, Takashi

AU - Takahashi, Koji

AU - Takata, Yasuyuki

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Condensation heat transfer is a widely-used technique for industrial applications represented by heat exchanger because of its high heat transfer coefficient. To enhance its performance, a suitable surface is required, where both condensation and droplet removal smoothly occur. In this study, we compared wettability of a graphene surface and an amorphous carbon surface. The result shows that an amorphous carbon surface is more hydrophilic. Then we prepared a graphite surface which has nanoscale hydrophilic regions in large hydrophobic area. We observed the submicron-scale droplet condensation occurs preferentially on the hydrophilic graphite step by using environmental scanning electron microscope (ESEM).

AB - Condensation heat transfer is a widely-used technique for industrial applications represented by heat exchanger because of its high heat transfer coefficient. To enhance its performance, a suitable surface is required, where both condensation and droplet removal smoothly occur. In this study, we compared wettability of a graphene surface and an amorphous carbon surface. The result shows that an amorphous carbon surface is more hydrophilic. Then we prepared a graphite surface which has nanoscale hydrophilic regions in large hydrophobic area. We observed the submicron-scale droplet condensation occurs preferentially on the hydrophilic graphite step by using environmental scanning electron microscope (ESEM).

UR - http://www.scopus.com/inward/record.url?scp=84903440559&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84903440559&partnerID=8YFLogxK

U2 - 10.1115/IMECE2013-66186

DO - 10.1115/IMECE2013-66186

M3 - Conference contribution

AN - SCOPUS:84903440559

SN - 9780791856444

T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)

BT - Safety, Reliability and Risk; Virtual Podium (Posters)

PB - American Society of Mechanical Engineers (ASME)

ER -