Pool boiling on nano-textured surfaces

Seongchul Jun, Suman Sinha-Ray, Alexander Yarin

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Pool boiling on nano-textured surfaces was studied experimentally and theoretically for ethanol and water as working fluids. The nano-textured surfaces were copper platelets covered with copper-plated electrospun nanofibers. In addition, for comparison pool boiling on the corresponding bare copper surfaces was experimentally studied. The results revealed that the heat flux and heat transfer coefficient in boiling on the nano-textured surfaces were about 3-8 times higher than those on the bare copper surfaces. This stems from the fact that nano-textured surfaces promote bubble growth by increasing the average temperature of fluid surrounding growing bubbles, as our experimental and theoretical results show. Hence, nano-textured surfaces comprised of copper-plated nanofibers facilitate bubble growth rate and, thus, increase bubble detachment frequency. On the other hand, the critical heat flux (CHF) on the nano-textured surfaces was found to be very close to its counterpart on the bare copper surfaces. However, the heat flux on the nano-textured surfaces in transition boiling was significantly higher than on the bare copper ones, since the presence of nanofibers prevented bubble merging and delayed formation of vapor film. The wall temperature is about 10 °C lower on the nano-textured surfaces. In transitional boiling the heat flux on nanofiber mats reduces much slower than on the bare surfaces.

Original languageEnglish
Pages (from-to)99-111
Number of pages13
JournalInternational Journal of Heat and Mass Transfer
Volume62
Issue number1
DOIs
Publication statusPublished - 2013 Apr 2
Externally publishedYes

Fingerprint

boiling
Boiling liquids
Copper
copper
Nanofibers
bubbles
Heat flux
heat flux
Fluids
working fluids
wall temperature
Platelets
heat transfer coefficients
platelets
stems
Merging
detachment
Heat transfer coefficients
Ethanol
ethyl alcohol

Keywords

  • Critical heat flux
  • Ethanol
  • Nano-textured surfaces
  • Nanofibers
  • Pool boiling
  • Water

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

Cite this

Pool boiling on nano-textured surfaces. / Jun, Seongchul; Sinha-Ray, Suman; Yarin, Alexander.

In: International Journal of Heat and Mass Transfer, Vol. 62, No. 1, 02.04.2013, p. 99-111.

Research output: Contribution to journalArticle

Jun, Seongchul ; Sinha-Ray, Suman ; Yarin, Alexander. / Pool boiling on nano-textured surfaces. In: International Journal of Heat and Mass Transfer. 2013 ; Vol. 62, No. 1. pp. 99-111.
@article{a1239ef4d8f0469d8543fb9d4ccb0569,
title = "Pool boiling on nano-textured surfaces",
abstract = "Pool boiling on nano-textured surfaces was studied experimentally and theoretically for ethanol and water as working fluids. The nano-textured surfaces were copper platelets covered with copper-plated electrospun nanofibers. In addition, for comparison pool boiling on the corresponding bare copper surfaces was experimentally studied. The results revealed that the heat flux and heat transfer coefficient in boiling on the nano-textured surfaces were about 3-8 times higher than those on the bare copper surfaces. This stems from the fact that nano-textured surfaces promote bubble growth by increasing the average temperature of fluid surrounding growing bubbles, as our experimental and theoretical results show. Hence, nano-textured surfaces comprised of copper-plated nanofibers facilitate bubble growth rate and, thus, increase bubble detachment frequency. On the other hand, the critical heat flux (CHF) on the nano-textured surfaces was found to be very close to its counterpart on the bare copper surfaces. However, the heat flux on the nano-textured surfaces in transition boiling was significantly higher than on the bare copper ones, since the presence of nanofibers prevented bubble merging and delayed formation of vapor film. The wall temperature is about 10 °C lower on the nano-textured surfaces. In transitional boiling the heat flux on nanofiber mats reduces much slower than on the bare surfaces.",
keywords = "Critical heat flux, Ethanol, Nano-textured surfaces, Nanofibers, Pool boiling, Water",
author = "Seongchul Jun and Suman Sinha-Ray and Alexander Yarin",
year = "2013",
month = "4",
day = "2",
doi = "10.1016/j.ijheatmasstransfer.2013.02.046",
language = "English",
volume = "62",
pages = "99--111",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Elsevier Limited",
number = "1",

}

TY - JOUR

T1 - Pool boiling on nano-textured surfaces

AU - Jun, Seongchul

AU - Sinha-Ray, Suman

AU - Yarin, Alexander

PY - 2013/4/2

Y1 - 2013/4/2

N2 - Pool boiling on nano-textured surfaces was studied experimentally and theoretically for ethanol and water as working fluids. The nano-textured surfaces were copper platelets covered with copper-plated electrospun nanofibers. In addition, for comparison pool boiling on the corresponding bare copper surfaces was experimentally studied. The results revealed that the heat flux and heat transfer coefficient in boiling on the nano-textured surfaces were about 3-8 times higher than those on the bare copper surfaces. This stems from the fact that nano-textured surfaces promote bubble growth by increasing the average temperature of fluid surrounding growing bubbles, as our experimental and theoretical results show. Hence, nano-textured surfaces comprised of copper-plated nanofibers facilitate bubble growth rate and, thus, increase bubble detachment frequency. On the other hand, the critical heat flux (CHF) on the nano-textured surfaces was found to be very close to its counterpart on the bare copper surfaces. However, the heat flux on the nano-textured surfaces in transition boiling was significantly higher than on the bare copper ones, since the presence of nanofibers prevented bubble merging and delayed formation of vapor film. The wall temperature is about 10 °C lower on the nano-textured surfaces. In transitional boiling the heat flux on nanofiber mats reduces much slower than on the bare surfaces.

AB - Pool boiling on nano-textured surfaces was studied experimentally and theoretically for ethanol and water as working fluids. The nano-textured surfaces were copper platelets covered with copper-plated electrospun nanofibers. In addition, for comparison pool boiling on the corresponding bare copper surfaces was experimentally studied. The results revealed that the heat flux and heat transfer coefficient in boiling on the nano-textured surfaces were about 3-8 times higher than those on the bare copper surfaces. This stems from the fact that nano-textured surfaces promote bubble growth by increasing the average temperature of fluid surrounding growing bubbles, as our experimental and theoretical results show. Hence, nano-textured surfaces comprised of copper-plated nanofibers facilitate bubble growth rate and, thus, increase bubble detachment frequency. On the other hand, the critical heat flux (CHF) on the nano-textured surfaces was found to be very close to its counterpart on the bare copper surfaces. However, the heat flux on the nano-textured surfaces in transition boiling was significantly higher than on the bare copper ones, since the presence of nanofibers prevented bubble merging and delayed formation of vapor film. The wall temperature is about 10 °C lower on the nano-textured surfaces. In transitional boiling the heat flux on nanofiber mats reduces much slower than on the bare surfaces.

KW - Critical heat flux

KW - Ethanol

KW - Nano-textured surfaces

KW - Nanofibers

KW - Pool boiling

KW - Water

UR - http://www.scopus.com/inward/record.url?scp=84875434083&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84875434083&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2013.02.046

DO - 10.1016/j.ijheatmasstransfer.2013.02.046

M3 - Article

VL - 62

SP - 99

EP - 111

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

IS - 1

ER -