1. Effect of heat transfer performance of shell and tube heat exchanger equipped with VCR system using different baffle angles and operated with different graphene oxide nanoparticle shapes.
- Author
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Rao, T. Srinivasa, Kumar, K. Dilip, Saleem, Sk. Abdul, Kishan, N., Raghavendra, Ch., and Avinash, M.
- Subjects
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NANOFLUIDS , *HEAT exchangers , *HEAT transfer , *HEAT convection , *HEAT transfer coefficient , *GRAPHENE oxide , *FUSED salts , *ETHYLENE glycol - Abstract
Nanofluid is a novel industrial fluid that has the potential to improve heat exchanger performance. This paper presents an experimental study on the forced convective heat transfer of a graphene oxide nanofluid composed of water/Ethylene glycol and various volume percentages of GO nanofluid (0.5–2) percent passing in a cylindrical shell and tube heat exchanger with various baffle angles. Counter flow is investigated in turbulent flow conditions. The influence of heat transfer rate, entropy development, and overall heat transfer coefficient in heat exchangers with various baffle angles. The above-stated factors of the heat exchanger were governed by conventional correlations using nanofluids. Among the different reformed baffle angles, cylindrical shape nanoparticles performed best in factors of heat transfer rate and overall heat transfer coefficient. The overall heat transfer coefficient of cylindrical shape particles with 120 baffle angle is found to be 15%, 24%, and 30% higher than 240, 360baffle angles, in consistent to 1.5 vol. percent of GO nanofluid. Heat transfer is also found to be greater for cylindrical shapes at 120baffle angle than for other baffle angles. Entropy development, on the other hand, decreases with increasing volume percentage for all baffle angles. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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