The study on the critical heat flux and pool boiling heat transfer coefficient of binary nanofluids (H2O/LiBr + Al2O 3)

Jung Yeul Jung, Eung Surk Kim, Youngsuk Nam, Yong Tae Kang

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

In this study, we measured the critical heat flux (CHF) and boiling heat transfer coefficient of H2O/LiBr-based binary nanofluids. By using the PVA (polyvinyl alcohol) as a stabilizer, Al2O3 nanoparticles could be stably dispersed in H2O/LiBr. The plate copper heater (10 × 10 mm2) is used as the boiling surface. The concentration of nanoparticle varies 0-0.1 vol%, dispersed in H 2O/LiBr solutions (3, 7 and 10 wt% of LiBr). The results show that the boiling heat transfer coefficient of the binary nanofluids becomes lower than that of the base fluid as the concentration of nanoparticles increases while CHF of it becomes higher. We obtained an enhanced CHF of ∼48.5% (compared to the base fluid) with the 0.1 vol% Al2O3 in 10 wt% LiBr aqueous solution.

Original languageEnglish
Pages (from-to)1056-1061
Number of pages6
JournalInternational Journal of Refrigeration
Volume36
Issue number3
DOIs
Publication statusPublished - 2013 May

Keywords

  • Binary mixture
  • Heat flux
  • Heat transfer coefficient
  • Particles
  • Pool boiling

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering

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