An Experimental Investigation of Convective Heat Transfer of Slurry Phase Change Material in a Tube with Butterfly Tube Inserts

Document Type : Research Article

Authors

1 Faculty of Petroleum, Gas and Petrochemical Engineering, Persian Gulf University

2 Faculty of Petroleum, Gas and Petrochemical Engineering, Persian Gulf University, Bushehr

3 Assistant Professor of Chemical Engineering/ Persian Gulf University

Abstract

In this study, the effect of adding of microencapsulated phase change material to pure water base fluid as a working fluid was investigated. To this end, a laboratory apparatus was prepared and used. The main part of this setup is a tube which is called test section. The test section has a circular cross- section under a constant heat flux and is equipped with 6 thermocouples for measuring wall temperature at 6 different points as well as 2 thermocouples to measure the inlet and outlet flow temperature into the tube. The effect of butterfly tube inserts was also studied and the results were compared with each other. The results indicated that adding phase change material to base fluid could improve the heat transfer rate up to 41%. In addition, when the butterfly blades were placed in the test section, it was observed that the heat transfer rate increased to 234% for pure water and up to 180% for the slurry with 10 wt% of microencapsulated phase change material. The blades increased heat transfer by creating turbulence in the flow and eliminating the thermal boundary layer.

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 52, Issue 6
September 2020
Pages 1561-1576

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