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Experimental investigation of cooling performance with graphene based nano-fluids in a vehicle radiator

  • Ferhat KılınçEmail author
  • Ertan Buyruk
  • Koray Karabulut
Original
  • 16 Downloads

Abstract

The cooling performance of a vehicle radiator was experimentally investigated using pure water, graphene oxide (GO) and graphene nano ribon (GNR) nano-fluids in this paper. Three different fluid inlet temperatures (36, 40 and 44 °C) and four different flow rates (0.6, 0.7, 0.8 and 0.9 m3 h−1) were performed in the experiments. GO and GNR nano-fluids were obtained at 0.01 and 0.02% vol. concentrations by means of pure water as a base fluid. In order to determine the heat transfer enhancement, the experimental datas were compared as overall heat transfer coefficients (U) for pure water and nano-fluids. The mean enhancement values of U for all temperatures were obtained as 5.41% and 26.08% for 0.01% and 0.02% vol. concentrations of GO/water nano-fluid and 15.62% and 20.64% for 0.01% and 0.02% vol. concentrations of GNR/water nano-fluid, respectively.

Nomenclature

A

Area (m2)

cp

Specific heat (J/kg K)

F

Correction coefficient

k

Thermal conductivity coefficient (W/mK)

\( \dot{m} \)

Mass flow rate (m3/h)

NTU

Number of transfer unit

q

Heat load (W)

T

Temperature (°C)

U

Overall heat transfer coefficient (W/m2K)

ϕ

Concentration (%)

ε

Effectiveness

μ

Viscosity (kg/m2s)

ρ

Density (kg/m3)

Subscript

bf

Base fluid

f

Fluid

h,c

Hot and cold fluids

i,o

Inlet and outlet conditions

nf

Nano-fluid

p

Particle

s

Surface

Notes

Acknowledgements

This experimental work was supported by Sivas Cumhuriyet University Scientific Research Projects Unit with M-526 project number.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Ferhat Kılınç
    • 1
    Email author
  • Ertan Buyruk
    • 1
  • Koray Karabulut
    • 2
  1. 1.Mechanical Engineering DepartmentSivas Cumhuriyet UniversitySivasTurkey
  2. 2.Sivas Vocational High School, Electric and Energy DepartmentSivas Cumhuriyet UniversitySivasTurkey

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