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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 orcid ; 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
; ; ; ; ; ; and
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
2025-04-04 14:36:23
@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    = {{Proceeding: International Heat Transfer Conference 16}},
  issn         = {{2377-424X}},
  keywords     = {{Dielectric liquid; Nanoparticle coating; Pool boiling}},
  language     = {{eng}},
  pages        = {{1341--1347}},
  publisher    = {{Begell House}},
  series       = {{International Heat Transfer Conference}},
  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}},
  doi          = {{10.1615/IHTC16.bae.023071}},
  year         = {{2018}},
}