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Enhancement of HFE-7200 pool boiling heat transfer on copper surfaces with nanoparticle coatings

Cao, Zhen LU ; Wu, Zan LU ; Pham, Anh Duc; Preger, Calle LU ; Ruzgas, Tautgirdas LU ; Alber, Cathrine; Abbood, Sahar LU and Sunden, Bengt LU (2018) 16th International Heat Transfer Conference, IHTC 2018 In International Heat Transfer Conference p.1341-1347
Abstract

Saturated pool boiling heat transfer of HFE-7200 is investigated experimentally on copper surfaces with nanoparticle coatings at atmospheric pressure. The coatings are generated by an electrophoretic deposition method. Two modified surfaces are prepared with Cu-Zinc nanoparticles of 0.3 mg and 0.6 mg, respectively. During the deposition, ethanol works as the solvent while the electrical potential and deposition time are controlled as 9.5 V and 30 min, respectively. The experimental results show heat transfer is considerably enhanced by the nanoparticle coatings. The surface with 0.6 mg nanoparticles (EDS-2) performs better than the surface with 0.3 mg nanoparticles (EDS-1), and a maximum 140% heat transfer enhancement is achieved on the... (More)

Saturated pool boiling heat transfer of HFE-7200 is investigated experimentally on copper surfaces with nanoparticle coatings at atmospheric pressure. The coatings are generated by an electrophoretic deposition method. Two modified surfaces are prepared with Cu-Zinc nanoparticles of 0.3 mg and 0.6 mg, respectively. During the deposition, ethanol works as the solvent while the electrical potential and deposition time are controlled as 9.5 V and 30 min, respectively. The experimental results show heat transfer is considerably enhanced by the nanoparticle coatings. The surface with 0.6 mg nanoparticles (EDS-2) performs better than the surface with 0.3 mg nanoparticles (EDS-1), and a maximum 140% heat transfer enhancement is achieved on the surface EDS-2 compared with the SS. However, the critical heat flux is not enhanced by the coatings but even slightly decreased. A high speed visualization is employed to capture bubble behavior. It is found that bubbles on EDS-1 and EDS-2 have smaller sizes and higher departure frequency than those on the SS before reaching the critical heat flux. However, at critical heat fluxes, a vapor blanket appears on all surfaces.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Dielectric liquid, Nanoparticle coating, Pool boiling
host publication
Proceeding: International Heat Transfer Conference 16
series title
International Heat Transfer Conference
pages
7 pages
publisher
Begell House
conference name
16th International Heat Transfer Conference, IHTC 2018
conference location
Beijing, China
conference dates
2018-08-10 - 2018-08-15
external identifiers
  • scopus:85068336901
ISSN
2377-424X
DOI
10.1615/IHTC16.bae.023071
language
English
LU publication?
yes
id
6b9bc6b3-7358-46da-aa67-9e59e1e38edc
date added to LUP
2019-07-11 15:16:30
date last changed
2019-07-15 08:23:15
@inproceedings{6b9bc6b3-7358-46da-aa67-9e59e1e38edc,
  abstract     = {<p>Saturated pool boiling heat transfer of HFE-7200 is investigated experimentally on copper surfaces with nanoparticle coatings at atmospheric pressure. The coatings are generated by an electrophoretic deposition method. Two modified surfaces are prepared with Cu-Zinc nanoparticles of 0.3 mg and 0.6 mg, respectively. During the deposition, ethanol works as the solvent while the electrical potential and deposition time are controlled as 9.5 V and 30 min, respectively. The experimental results show heat transfer is considerably enhanced by the nanoparticle coatings. The surface with 0.6 mg nanoparticles (EDS-2) performs better than the surface with 0.3 mg nanoparticles (EDS-1), and a maximum 140% heat transfer enhancement is achieved on the surface EDS-2 compared with the SS. However, the critical heat flux is not enhanced by the coatings but even slightly decreased. A high speed visualization is employed to capture bubble behavior. It is found that bubbles on EDS-1 and EDS-2 have smaller sizes and higher departure frequency than those on the SS before reaching the critical heat flux. However, at critical heat fluxes, a vapor blanket appears on all surfaces.</p>},
  author       = {Cao, Zhen and Wu, Zan and Pham, Anh Duc and Preger, Calle and Ruzgas, Tautgirdas and Alber, Cathrine and Abbood, Sahar and Sunden, Bengt},
  booktitle    = {International Heat Transfer Conference},
  issn         = {2377-424X},
  keyword      = {Dielectric liquid,Nanoparticle coating,Pool boiling},
  language     = {eng},
  location     = {Beijing, China},
  pages        = {1341--1347},
  publisher    = {Begell House},
  title        = {Enhancement of HFE-7200 pool boiling heat transfer on copper surfaces with nanoparticle coatings},
  url          = {http://dx.doi.org/10.1615/IHTC16.bae.023071},
  year         = {2018},
}