Investigation on the use of nanofluids to enhance heat PIPE performance

Tomer Israeli, T Agami Reddy, Young I. Cho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


This paper reports on preliminary experimental results on using nanofluids to enhance the thermal performance of heat pipes. Our- experience with preparing copper oxide (CuO) nanofluids is described. Contrary to earlier studies which report infinite shelf life, we found that nanofluid stability lasted for about three weeks only; an issue which merits further study. We have also conducted various experiments to measure the variation of thermal conductivity and surface tension with CuO nanofluid concentration. Actual experiments on nanofluid heat pipes were also performed which indicated an average 12.5% decrease in the overall thermal resistance of the heat pipe using nanofluid of 3% vol concentration. This observed improvement is fairly consistent with our predictions using a simple analytical thermal network model for heat pipe overall resistance and the measured nanofluid conductivity. The results, though encouraging, need more careful and elaborate experimental studies before the evidence can be deemed conclusive.

Original languageEnglish (US)
Title of host publicationInternational Solar Energy Conference
Number of pages9
StatePublished - 2005
Externally publishedYes
EventSolar Engineering 2005 - Orlando, FL, United States
Duration: Aug 2 2005Aug 6 2005


OtherSolar Engineering 2005
Country/TerritoryUnited States
CityOrlando, FL


  • Copper oxide nanofluids
  • Experiments on nanofluid heat pipes
  • Heat pipes
  • Nanofluid heat pipes
  • Thermal model of nanofluid heat pipe

ASJC Scopus subject areas

  • Space and Planetary Science
  • Renewable Energy, Sustainability and the Environment


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