Surface deposition of nanoparticles during pool boiling of nanofluids and its effects on CHF enhancement using nanofluids

Hyung Dae Kim, Moo Hwan Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper is concerned about mechanism of outstanding CHF enhancement phenomena using nanofluids, a subject with academically and industrially remarkable interest. Pool boiling experiments using an electrically heated horizontal wire were carried out with various water-based nanofluids containing Ag, Al2O3, SiO2, and TiO2 nanoparticles. The results showed that nanoparticle deposition on the heater surface occurred during pool boiling of nanofluids, and that the effect of nanoparticle porous layer on CHF could explain enough the CHF enhancement of nanofluids. Then the porous surface was characterized using surface wettability and capillary wicking performance, which are the significant properties of boiling surface influencing CHF. Discussion of the results suggested that the outstandingly enhanced CHF performances of nanofluids under the nucleate pool boiling were associated with enhanced surface wettability and liquid suction effect due to capillary wicking on the nanoparticle-deposited surface.

Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2007
Pages783-788
Number of pages6
DOIs
Publication statusPublished - 2007
Event5th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2007 - Puebla, Mexico
Duration: 18 Jun 200720 Jun 2007

Publication series

NameProceedings of the 5th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2007

Conference

Conference5th International Conference on Nanochannels, Microchannels and Minichannels, ICNMM2007
Country/TerritoryMexico
CityPuebla
Period18/06/0720/06/07

Fingerprint

Dive into the research topics of 'Surface deposition of nanoparticles during pool boiling of nanofluids and its effects on CHF enhancement using nanofluids'. Together they form a unique fingerprint.

Cite this