Investigation of Heat Transfer Characteristics of Al2O3-Water Nanofluids in an Electric Heater

Research output: Contribution to journalArticle

Abstract

Commonly, heat transfer performance of a nanofluid is enhanced by increasing the mass fraction of nanoparticles due to an improvement of the thermo-physical properties. However, increasing the number of nanoparticles in the base fluid will result in an increase of the nanofluid viscosity. This research aims to investigate natural convective heat transfer for an electric heater filled with various Al2O3-water nanofluids. The effects of various mass fractions of the nanofluid (0.1–2.0 wt.%) on the heating efficiency of the electric heater were analyzed over time, and results indicate that the electric heater with the 1.0% Al2O3-water nanofluid has the highest heating efficiency of the external environment.

Details

Authors
Organisations
External organisations
  • Hebei University of Technology
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Energy Systems
Original languageEnglish
JournalHeat Transfer Engineering
Publication statusE-pub ahead of print - 2020 Sep 16
Publication categoryResearch
Peer-reviewedYes