Experimental Investigation of Double Pipe Heat Exchanger Performance based on Alumina and Copper Oxide Working Nanofluids

The heat transfer performance of heat exchanger is greatly depending on the thermal conductivity and heat transfer capacity of the working fluid. One of the important methods to improve the thermal conductivity of the heat transfer fluid is by adding nano particles of materials with high thermal con...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-06, Vol.1105 (1), p.12061
Main Authors: Hussien, Fawziea M., Faraj, Johain J., Hamad, Ahmed J.
Format: Article
Language:English
Subjects:
Alumina
Aluminum oxide
Copper oxide
Copper oxides
Fluid dynamics
Fluid flow
Heat conductivity
Heat Exchanger
Heat exchangers
Heat transfer
Heat transfer coefficients
Nanofluid
Nanofluids
Nanoparticles
Performance enhancement
Pipes
Thermal conductivity
Thermal performance
Working fluids
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Summary:The heat transfer performance of heat exchanger is greatly depending on the thermal conductivity and heat transfer capacity of the working fluid. One of the important methods to improve the thermal conductivity of the heat transfer fluid is by adding nano particles of materials with high thermal conductivity. In the present study, an experimental work was conducted to investigate the performance enhancement of double pipe heat exchanger using Alumina (Al 2 O 3) and Copper oxide (CuO) nano particles mixed with engine oil as a working fluid. The thermal performance of heat exchanger was investigated at particles concentrations 0.05% and 0.1% of Al 2 O 3 and CuO nano particles to determine the most effective factors on heat transfer enhancement. The results revealed that, the enhancement percentage in Nusselt number (Nu) for nanofluid at 0.05% particles concentration compared to pure oil was 9% and 6% for CuO and Al 2 O 3 nanofluids respectively. While at 0.1% concentration, the enhancement percentage in Nu was about 17% and 15% for CuO and Al 2 O 3 nanofluids respectively. The enhancement percentage in value of overall heat transfer coefficient for CuO nanofluid was 6.5% compared to Al 2 O 3 nanofluid at 0.1% concentration. The enhancement percentage in the heat exchanger effectiveness was about 12% for CuO nanofluid compared with that for Al 2 O 3 at 0.1% concentration. Adding the CuO and Al 2 O 3 nano particles has improved the thermal conductivity of base fluid (oil) and led to a significant enhancement in heat transfer rate and thermal performance of the heat exchanger.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1105/1/012061