Intertube falling-film heat transfer behavior of multiwall carbon nanotube suspensions (MWCNT nanofluids)

Binglu Ruan, Anthony M. Jacobi

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

Abstract

The thermal conductivity and viscosity of water-based and ethylene-glycol-based multiwall carbon nanotube (MWCNT) suspensions are measured for MWCNT volume concentrations up to 0.24%. The thermal conductivity is found to increase up to 8.6% and 9.3% for water-based and ethylene-glycol-based nanofluids, respectively. The viscosity of the nanofluids increases compared to that of their base fluids, with larger increases for the ethylene-glycol-based nanofluids. Intertube falling-film heat transfer characteristics of these nanofluids are measured and compared to data for the base fluids. The heat transfer coefficient of the water-based nanofluids decreases at low MWCNT concentrations but increases as the concentration increases. The heat transfer coefficient of the ethylene-glycolbased nanofluids decreases with an increase in MWCNT concentration, with a maximum deviation of 30%.

Original languageEnglish (US)
Title of host publicationASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011
PublisherAmerican Society of Mechanical Engineers
ISBN (Print)9780791838921
DOIs
StatePublished - 2011
Externally publishedYes
EventASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011 - Honolulu, HI, United States
Duration: Mar 13 2011Mar 17 2011

Publication series

NameASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011

Other

OtherASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011
Country/TerritoryUnited States
CityHonolulu, HI
Period3/13/113/17/11

Keywords

  • Falling film
  • Heat transfer
  • Kinematic viscosity
  • Nanofluids
  • Thermal conductivity

ASJC Scopus subject areas

  • Energy Engineering and Power Technology

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