A numerical investigation of γ-Al2O3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchanger
The effect of γ-Al2O3 nanoparticles on heat transfer rate, baffle spacing and pressure drop in the shell side of small shell and tube heat exchangers was investigated numerically under turbulent regime. γ-Al2O3-water nanofluids and pure water were used in the shell side and the tube side of heat exc...
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University of Sistan and Baluchestan (USB) and the Iranian Society of Mechanical Engineers (ISME)
2016-01-01
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Series: | Transport Phenomena in Nano and Micro Scales |
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Online Access: | http://tpnms.usb.ac.ir/article_2217_fc03640ade649816fa27a7dc2ef54146.pdf |
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doaj-693cbab250024fff804ff05b0e287ce92021-01-02T02:10:12ZengUniversity of Sistan and Baluchestan (USB) and the Iranian Society of Mechanical Engineers (ISME)Transport Phenomena in Nano and Micro Scales2322-36342322-36342016-01-0141293510.7508/tpnms.2016.01.0042217A numerical investigation of γ-Al2O3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchangerP. Shahmohammadi0H. Beiki1Department of Chemical Engineering, Quchan University of Advanced Technology, 67335-94771, Quchan, I.R. IranDepartment of Chemical Engineering, Quchan University of Advanced Technology, 67335-94771, Quchan, I.R. IranThe effect of γ-Al2O3 nanoparticles on heat transfer rate, baffle spacing and pressure drop in the shell side of small shell and tube heat exchangers was investigated numerically under turbulent regime. γ-Al2O3-water nanofluids and pure water were used in the shell side and the tube side of heat exchangers, respectively. Since the properties of γ-Al2O3-water nanofluids were variable, they were defined using the user define function. The results revealed that heat transfer and pressure drop were increased with mass flow rate as well as baffle numbers. Adding nanoparticles to the based fluid did not have a significant effect on pressure drop in the shell side. The best heat transfer performance of heat exchangers was for γ-Al2O3-water 1 vol.% and higher nanoparticles concentration was not suitable. The suitable baffle spacing was 43.4% of the shell diameter, showing a good agreement with Bell-Delaware method.http://tpnms.usb.ac.ir/article_2217_fc03640ade649816fa27a7dc2ef54146.pdfBaffle spacingCFD modelsγ-Al2O3-water nanofluidsShell and tube heat exchangerUser define function (UDF) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
P. Shahmohammadi H. Beiki |
spellingShingle |
P. Shahmohammadi H. Beiki A numerical investigation of γ-Al2O3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchanger Transport Phenomena in Nano and Micro Scales Baffle spacing CFD models γ-Al2O3-water nanofluids Shell and tube heat exchanger User define function (UDF) |
author_facet |
P. Shahmohammadi H. Beiki |
author_sort |
P. Shahmohammadi |
title |
A numerical investigation of γ-Al2O3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchanger |
title_short |
A numerical investigation of γ-Al2O3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchanger |
title_full |
A numerical investigation of γ-Al2O3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchanger |
title_fullStr |
A numerical investigation of γ-Al2O3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchanger |
title_full_unstemmed |
A numerical investigation of γ-Al2O3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchanger |
title_sort |
numerical investigation of γ-al2o3-water nanofluids heat transfer and pressure drop in a shell and tube heat exchanger |
publisher |
University of Sistan and Baluchestan (USB) and the Iranian Society of Mechanical Engineers (ISME) |
series |
Transport Phenomena in Nano and Micro Scales |
issn |
2322-3634 2322-3634 |
publishDate |
2016-01-01 |
description |
The effect of γ-Al2O3 nanoparticles on heat transfer rate, baffle spacing and pressure drop in the shell side of small shell and tube heat exchangers was investigated numerically under turbulent regime. γ-Al2O3-water nanofluids and pure water were used in the shell side and the tube side of heat exchangers, respectively. Since the properties of γ-Al2O3-water nanofluids were variable, they were defined using the user define function. The results revealed that heat transfer and pressure drop were increased with mass flow rate as well as baffle numbers. Adding nanoparticles to the based fluid did not have a significant effect on pressure drop in the shell side. The best heat transfer performance of heat exchangers was for γ-Al2O3-water 1 vol.% and higher nanoparticles concentration was not suitable. The suitable baffle spacing was 43.4% of the shell diameter, showing a good agreement with Bell-Delaware method. |
topic |
Baffle spacing CFD models γ-Al2O3-water nanofluids Shell and tube heat exchanger User define function (UDF) |
url |
http://tpnms.usb.ac.ir/article_2217_fc03640ade649816fa27a7dc2ef54146.pdf |
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