Modeling of shell and tube heat recovery exchanger operated with nanofluid based coolants

K. Y. Leong, R. Saidur, T. M.I. Mahlia, Y. H. Yau

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

The emergence of several challenging issues such as climate change, fuel price hike and fuel security have become hot topics around the world. Therefore, introducing highly efficient devices and heat recovery systems are necessary to overcome these challenges. It is reported that a high portion of industrial energy is wasted as flue gas from heating plants, boilers, etc. This study has focused on the application of nanofluids as working fluids in shell and tube heat recovery exchangers in a biomass heating plant. Heat exchanger specification, nanofluid properties and mathematical formulations were taken from the literature to analyze thermal and energy performance of the heat recovery system. It was observed that the convective and overall heat transfer coefficient increased with the application of nanofluids compared to ethylene glycol or water based fluids. It addition, 7.8% of the heat transfer enhancement could be achieved with the addition of 1% copper nanoparticles in ethylene glycol based fluid at a mass flow rate of 26.3 and 116.0 kg/s for flue gas and coolant, respectively.

Original languageEnglish
Pages (from-to)808-816
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Volume55
Issue number4
DOIs
Publication statusPublished - 31 Jan 2012

All Science Journal Classification (ASJC) codes

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

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