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Effects of hybrid nanofluid mixture in plate heat exchangers

Huang, Dan LU ; Wu, Zan LU and Sundén, Bengt LU (2016) In Experimental Thermal and Fluid Science 72. p.190-196
Abstract
Heat transfer and pressure drop characteristics of a hybrid nanofluid mixture containing alumina nanoparticles and multi-walled carbon nanotubes (MWCNTs) were experimentally investigated in a chevron corrugated-plate heat exchanger. A MWCNT/water nanofluid with a volume concentration of 0.0111% and an Al2O3/water nanofluid with a volume concentration of 1.89% were mixed at a volume ratio of 1:2.5. A small amount of MWCNTs was added in order to increase the mixture thermal conductivity. Experiments with water used as both hot and cold fluids were carried out first to obtain a heat transfer correlation for fluids flowing in the chevron plate heat exchanger. The results of the nanofluid mixture were compared with those of the Al2O3/water... (More)
Heat transfer and pressure drop characteristics of a hybrid nanofluid mixture containing alumina nanoparticles and multi-walled carbon nanotubes (MWCNTs) were experimentally investigated in a chevron corrugated-plate heat exchanger. A MWCNT/water nanofluid with a volume concentration of 0.0111% and an Al2O3/water nanofluid with a volume concentration of 1.89% were mixed at a volume ratio of 1:2.5. A small amount of MWCNTs was added in order to increase the mixture thermal conductivity. Experiments with water used as both hot and cold fluids were carried out first to obtain a heat transfer correlation for fluids flowing in the chevron plate heat exchanger. The results of the nanofluid mixture were compared with those of the Al2O3/water nanofluid and water. Results show that the heat transfer coefficient of the hybrid nanofluid mixture is slightly larger than that of the Al2O3/water nanofluid and water, when comparison is based on the same flow velocity. The hybrid nanofluid mixture also exhibits the highest heat transfer coefficient at a given pumping power. The pressure drop of the hybrid nanofluid mixture is smaller than that of the Al2O3/water nanofluid and only slightly higher than that of water. Therefore, hybrid nanofluid mixtures might be promising in many heat transfer applications. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Experimental Thermal and Fluid Science
volume
72
pages
190 - 196
publisher
Elsevier
external identifiers
  • wos:000368749800019
  • scopus:84958529942
ISSN
1879-2286
DOI
10.1016/j.expthermflusci.2015.11.009
language
English
LU publication?
yes
id
90d6b7df-6c6b-480e-9e15-a0566bfb7775 (old id 8312416)
date added to LUP
2015-12-15 16:55:23
date last changed
2017-10-22 03:21:36
@article{90d6b7df-6c6b-480e-9e15-a0566bfb7775,
  abstract     = {Heat transfer and pressure drop characteristics of a hybrid nanofluid mixture containing alumina nanoparticles and multi-walled carbon nanotubes (MWCNTs) were experimentally investigated in a chevron corrugated-plate heat exchanger. A MWCNT/water nanofluid with a volume concentration of 0.0111% and an Al2O3/water nanofluid with a volume concentration of 1.89% were mixed at a volume ratio of 1:2.5. A small amount of MWCNTs was added in order to increase the mixture thermal conductivity. Experiments with water used as both hot and cold fluids were carried out first to obtain a heat transfer correlation for fluids flowing in the chevron plate heat exchanger. The results of the nanofluid mixture were compared with those of the Al2O3/water nanofluid and water. Results show that the heat transfer coefficient of the hybrid nanofluid mixture is slightly larger than that of the Al2O3/water nanofluid and water, when comparison is based on the same flow velocity. The hybrid nanofluid mixture also exhibits the highest heat transfer coefficient at a given pumping power. The pressure drop of the hybrid nanofluid mixture is smaller than that of the Al2O3/water nanofluid and only slightly higher than that of water. Therefore, hybrid nanofluid mixtures might be promising in many heat transfer applications.},
  author       = {Huang, Dan and Wu, Zan and Sundén, Bengt},
  issn         = {1879-2286},
  language     = {eng},
  pages        = {190--196},
  publisher    = {Elsevier},
  series       = {Experimental Thermal and Fluid Science},
  title        = {Effects of hybrid nanofluid mixture in plate heat exchangers},
  url          = {http://dx.doi.org/10.1016/j.expthermflusci.2015.11.009},
  volume       = {72},
  year         = {2016},
}