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Heat and Mass Transfer

, Volume 54, Issue 10, pp 2907–2916 | Cite as

Heat transfer and pressure drop characteristics of a plate heat exchanger using water based Al2O3 nanofluid for 30° and 60° chevron angles

  • M. M. Elias
  • R. Saidur
  • R. Ben-Mansour
  • A. Hepbasli
  • N. A. Rahim
  • K. Jesbains
Original

Abstract

Nanofluid is a new class of engineering fluid that has good heat transfer characteristics which is essential to increase the heat transfer performance in various engineering applications such as heat exchangers and cooling of electronics. In this study, experiments were conducted to compare the heat transfer performance and pressure drop characteristics in a plate heat exchanger (PHE) for 30° and 60° chevron angles using water based Al2O3 nanofluid at the concentrations from 0 to 0.5 vol.% for different Reynolds numbers. The thermo-physical properties has been determined and presented in this paper. At 0.5 vol% concentration, the maximum heat transfer coefficient, the overall heat transfer coefficient and the heat transfer rate for 60° chevron angle have attained a higher percentage of 15.14%, 7.8% and 15.4%, respectively in comparison with the base fluid. Consequently, when the volume concentration or Reynolds number increases, the heat transfer coefficient and the overall heat transfer coefficient as well as the heat transfer rate of the PHE (Plate Heat Exchangers) increases respectively. Similarly, the pressure drop increases with the volume concentration. 60° chevron angle showed better performance in comparison with 30° chevron angle.

Nomenclature

C

Heat capacity rate kJ/K.s.

cp

Specific heat, kJ/kg.K.

D

Diameter of the port, m.

G

Mass velocity, kg/s.

h

Heat transfer coefficient, W/m2K.

k

Plate thermal conductivity, W/m K.

L

Port to port length, m.

\( \dot{m} \)

Mass flow rate, kg/s.

N

Number of channel.

NTU

Number of heat transfer units.

Q

Heat transfer rate.

q

Actual heat transfer rate.

T

Temperature, K.

t

Thickness of the plate, m.

U

Overall heat transfer coefficient, W/m2 K.

w

Effective width of plate, m.

ΔP

Pressure drop, Pa.

Greek symbols

ε

Heat exchanger effectiveness.

ρ

Density, kg/m3.

Ø

Volume fraction.

Subscripts

b

Base fluid.

c

Cold.

eff

Effective.

h

Hot.

nf

Nanofluid.

o

Outlet.

p

Nanoparticle.

Dimensionless numbers

Nu

Nusselt number.

Pr

Prandtl number.

Re

Reynolds number.

Notes

Acknowledgements

The authors would like to acknowledge the “Ministry of Higher Education Malaysia” (MoHE) for the financial support under UM MoHE High Impact Research Grant (HIRG) scheme (Project no: UM.C/HIR/MoHE/ENG/40) to carry out this research. The support of KFUPM to finalize the paper is also acknowledged.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringUniversity of MalayaKuala LumpurMalaysia
  2. 2.Research Centre for Nanomaterials and Energy Technology (RCNMET), School of Science and TechnologySunway UniversityPetaling JayaMalaysia
  3. 3.Department of EngineeringLancaster UniversityLancasterUK
  4. 4.Center of Research Excellence in Renewable Energy (CoRE-RE), Research InstituteKing Fahd University of Petroleum & Minerals (KFUPM)DhahranSaudi Arabia
  5. 5.Department of Energy Systems Engineering, Faculty of EngineeringYaşar UniversityIzmirTurkey
  6. 6.UM Power Energy Dedicated Advanced Centre (UMPEDAC)Wisma R & D, University of MalayaKuala LumpurMalaysia

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