Enhancement of heat transfer coefficient multi-metallic nanofluid with ANFIS modeling for thermophysical properties
Cu and Zn-water nanofluid is a suspension of the Cu and Zn nanoparticles with the size 50 nm in the water base fluid for different volume fractions to enhance its Thermophysical properties. The determination and measuring the enhancement of Thermophysical properties depends on many limitati...
Main Authors: | , , , , |
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Format: | Article |
Language: | English |
Published: |
VINCA Institute of Nuclear Sciences
2015-01-01
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Series: | Thermal Science |
Subjects: | |
Online Access: | http://www.doiserbia.nb.rs/img/doi/0354-9836/2015/0354-98361300139B.pdf |
Summary: | Cu and Zn-water nanofluid is a suspension of the Cu and Zn nanoparticles with
the size 50 nm in the water base fluid for different volume fractions to
enhance its Thermophysical properties. The determination and measuring the
enhancement of Thermophysical properties depends on many limitations.
Nanoparticles were suspended in a base fluid to prepare a nanofluid. A coated
transient hot wire apparatus was calibrated after the building of the all
systems. The vibro-viscometer was used to measure the dynamic viscosity. The
measured dynamic viscosity and thermal conductivity with all parameters
affected on the measurements such as base fluids thermal conductivity, volume
factions, and the temperatures of the base fluid were used as input to the
Artificial Neural Fuzzy inference system to modeling both dynamic viscosity
and thermal conductivity of the nanofluids. Then, the ANFIS modeling
equations were used to calculate the enhancement in heat transfer coefficient
using CFD software. The heat transfer coefficient was determined for flowing
flow in a circular pipe at constant heat flux. It was found that the thermal
conductivity of the nanofluid was highly affected by the volume fraction of
nanoparticles. A comparison of the thermal conductivity ratio for different
volume fractions was undertaken. The heat transfer coefficient of nanofluid
was found to be higher than its base fluid. Comparisons of convective heat
transfer coefficients for Cu and Zn nanofluids with the other correlation for
the nanofluids heat transfer enhancement are presented. Moreover, the flow
demonstrates anomalous enhancement in heat transfer nanofluids. |
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ISSN: | 0354-9836 2334-7163 |