Journal
ENERGY CONVERSION AND MANAGEMENT
Volume 105, Issue -, Pages 1366-1376Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2015.09.002
Keywords
Carbon nanotubes; Functionalization; Amino acid; Heat transfer coefficient; Pressure drop; Friction factor
Categories
Funding
- Iran Nanotechnology Initiative Council
- High Impact Research Grant [UM.C/625/1/HIR/MOHE/ENG/45, RP006B-13AET]
Ask authors/readers for more resources
Aspartic acid as a hydrophilic group is added to the main structure of multi-walled carbon nanotubes (MWNT) for synthesizing highly-dispersed MWNT-based water nanofluids with different concentrations. Chemical treatment is analyzed and functionalization is confirmed by TGA, FTIR, Raman spectroscopes. The present study is followed by investigation of thermo-physical properties as well as heat transfer rate of circular tube at constant heat flux in the presence of non-covalently and covalently-functionalized MWNT with aspartic acid. The prepared nanofluids in three weight concentrations of 0.05%, 0.1% and 0.2% are investigated in the flow rate range of 2.86-8.85 ml/s. Thermophysical properties, convective heat transfer coefficient, pressure drop, friction factor, performance index and pumping power results suggest that functionalized MWNT with aspartic acid is one of the most appropriate alternative coolant for water in industry. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available