Evaluation of the thermal performance of a heat pipe using alumina nanofluids

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

This study demonstrates the enhancement of the thermal performance of a heat pipe charged with nanofluid. The Al 2O 3/water nanofluid in this study was produced by the direct-synthesis method using a cationic chitosan dispersant. The Al 2O 3/water nanofluid served as the working fluid with three concentrations (0.5, 1.0, and 3.0wt.%) in heat pipes. The heat pipe in this study is a straight copper tube with an outer diameter of 9.52mm and different lengths of 0.3m, 0.45m, and 0.6m. This study presents a discussion on the effects of the charged volume ratio of the working fluid (20%, 40%, 60%, and 80%), tilt angle (10°, 40°, 70°, and 90°), heat pipe length, heating power (20W, 30W, and 40W), and weight fraction of nanoparticles on the overall thermal conductivity of the heat pipe to evaluate the thermal performance. Experimental results show that at a heating power of 40W, the optimal thermal performance for Al 2O 3/water nanofluid heat pipes measuring 0.3m, 0.45m, and 0.6m was 22.7%, 56.3%, and 35.1%, respectively, better than that of pipes using distilled water as the working fluid.

Original languageEnglish
Pages (from-to)504-511
Number of pages8
JournalExperimental Thermal and Fluid Science
Volume44
DOIs
Publication statusPublished - 2013 Jan 1

Fingerprint

Aluminum Oxide
Heat pipes
Alumina
Water
Fluids
Heating
Chitosan
Hot Temperature
Copper
Thermal conductivity
Pipe
Nanoparticles

Keywords

  • Alumina
  • Heat pipe
  • Nanofluid
  • Overall thermal conductivity
  • Tilt angle

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Nuclear Energy and Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Evaluation of the thermal performance of a heat pipe using alumina nanofluids. / Hong, Yi-xuan; Teng, Tun-Ping; Lin, Bo Gu.

In: Experimental Thermal and Fluid Science, Vol. 44, 01.01.2013, p. 504-511.

Research output: Contribution to journalArticle

@article{11f0ef9202ca40fda061098c4f384697,
title = "Evaluation of the thermal performance of a heat pipe using alumina nanofluids",
abstract = "This study demonstrates the enhancement of the thermal performance of a heat pipe charged with nanofluid. The Al 2O 3/water nanofluid in this study was produced by the direct-synthesis method using a cationic chitosan dispersant. The Al 2O 3/water nanofluid served as the working fluid with three concentrations (0.5, 1.0, and 3.0wt.{\%}) in heat pipes. The heat pipe in this study is a straight copper tube with an outer diameter of 9.52mm and different lengths of 0.3m, 0.45m, and 0.6m. This study presents a discussion on the effects of the charged volume ratio of the working fluid (20{\%}, 40{\%}, 60{\%}, and 80{\%}), tilt angle (10°, 40°, 70°, and 90°), heat pipe length, heating power (20W, 30W, and 40W), and weight fraction of nanoparticles on the overall thermal conductivity of the heat pipe to evaluate the thermal performance. Experimental results show that at a heating power of 40W, the optimal thermal performance for Al 2O 3/water nanofluid heat pipes measuring 0.3m, 0.45m, and 0.6m was 22.7{\%}, 56.3{\%}, and 35.1{\%}, respectively, better than that of pipes using distilled water as the working fluid.",
keywords = "Alumina, Heat pipe, Nanofluid, Overall thermal conductivity, Tilt angle",
author = "Yi-xuan Hong and Tun-Ping Teng and Lin, {Bo Gu}",
year = "2013",
month = "1",
day = "1",
doi = "10.1016/j.expthermflusci.2012.08.012",
language = "English",
volume = "44",
pages = "504--511",
journal = "Experimental Thermal and Fluid Science",
issn = "0894-1777",
publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Evaluation of the thermal performance of a heat pipe using alumina nanofluids

AU - Hong, Yi-xuan

AU - Teng, Tun-Ping

AU - Lin, Bo Gu

PY - 2013/1/1

Y1 - 2013/1/1

N2 - This study demonstrates the enhancement of the thermal performance of a heat pipe charged with nanofluid. The Al 2O 3/water nanofluid in this study was produced by the direct-synthesis method using a cationic chitosan dispersant. The Al 2O 3/water nanofluid served as the working fluid with three concentrations (0.5, 1.0, and 3.0wt.%) in heat pipes. The heat pipe in this study is a straight copper tube with an outer diameter of 9.52mm and different lengths of 0.3m, 0.45m, and 0.6m. This study presents a discussion on the effects of the charged volume ratio of the working fluid (20%, 40%, 60%, and 80%), tilt angle (10°, 40°, 70°, and 90°), heat pipe length, heating power (20W, 30W, and 40W), and weight fraction of nanoparticles on the overall thermal conductivity of the heat pipe to evaluate the thermal performance. Experimental results show that at a heating power of 40W, the optimal thermal performance for Al 2O 3/water nanofluid heat pipes measuring 0.3m, 0.45m, and 0.6m was 22.7%, 56.3%, and 35.1%, respectively, better than that of pipes using distilled water as the working fluid.

AB - This study demonstrates the enhancement of the thermal performance of a heat pipe charged with nanofluid. The Al 2O 3/water nanofluid in this study was produced by the direct-synthesis method using a cationic chitosan dispersant. The Al 2O 3/water nanofluid served as the working fluid with three concentrations (0.5, 1.0, and 3.0wt.%) in heat pipes. The heat pipe in this study is a straight copper tube with an outer diameter of 9.52mm and different lengths of 0.3m, 0.45m, and 0.6m. This study presents a discussion on the effects of the charged volume ratio of the working fluid (20%, 40%, 60%, and 80%), tilt angle (10°, 40°, 70°, and 90°), heat pipe length, heating power (20W, 30W, and 40W), and weight fraction of nanoparticles on the overall thermal conductivity of the heat pipe to evaluate the thermal performance. Experimental results show that at a heating power of 40W, the optimal thermal performance for Al 2O 3/water nanofluid heat pipes measuring 0.3m, 0.45m, and 0.6m was 22.7%, 56.3%, and 35.1%, respectively, better than that of pipes using distilled water as the working fluid.

KW - Alumina

KW - Heat pipe

KW - Nanofluid

KW - Overall thermal conductivity

KW - Tilt angle

UR - http://www.scopus.com/inward/record.url?scp=84869155788&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84869155788&partnerID=8YFLogxK

U2 - 10.1016/j.expthermflusci.2012.08.012

DO - 10.1016/j.expthermflusci.2012.08.012

M3 - Article

VL - 44

SP - 504

EP - 511

JO - Experimental Thermal and Fluid Science

JF - Experimental Thermal and Fluid Science

SN - 0894-1777

ER -