ENTROPY GENERATION AND HEAT TRANSFER PERFORMANCE OF CYLINDRICAL TUBE HEAT EXCHANGER WITH PERFORATED CONICAL RINGS: A NUMERICAL STUDY
-
Published:2024
Issue:9
Volume:55
Page:17-33
-
ISSN:1064-2285
-
Container-title:Heat Transfer Research
-
language:en
-
Short-container-title:Heat Trans Res
Author:
Anitha Sakthivel,Thomas Tiju
Abstract
Here we report a numerical analysis of a cylindrical tube heat exchanger equipped with perforated conical rings.
This study reports entropy generation, energy consumption, and thermal evaluation of heat exchanger by using
ternary hybrid nanofluid (as a coolant). The nanomaterials such as Al<sub>2</sub>O<sub>3</sub>, Cu, and MWCNT (multi-walled carbon nanotubes) with various volume fractions (φ = 0-0.5%) are used. The mean diameter of the nanoparticles is 42 nm. The geometrical effects of perforated conical rings on the heat transfer rate, effectiveness, performance index, entropy generation, and energy consumption are discussed. The mass flow rate is varied from 0.2 kg/s to 1 kg/s. The optimum performance is highlighted with 0.5% of volume fraction along with 0.4 kg/s mass flow rate. It is noted that the entropy generation is 50% lower by using ternary hybrid nanofluid. This study enables to understand the choice of the type and volume fraction of nanoparticles and of base fluid and of the flow rate of the fluid motion.
Reference42 articles.
1. Abdalla, A.N., Liu, L., Alazzawi, A.K., Ji, R., Bian, H., and Wang, C., Two-Phase Simulation of Entropy Generation and Thermo-Hydraulic Behavior of a Therminol/CuO-Diamond Nanofluid in a Heat Exchanger, Eng. Anal. Bound. Elem., vol. 146, pp. 880-894, 2023. DOI: 10.1016/j.enganabound.2022.11.021 2. Afshari, F., Tuncer, A.D., Sozen, A., Variyenli, H.I., Khanlari, A., and Gurbuz, E.Y., A Comprehensive Survey on Utilization of Hybrid Nanofluid in Plate Heat Exchanger with Various Number of Plates, Int. J. Numer. Method H, vol. 32, no. 1, pp. 241-264, 2022. DOI: 10.1108/HFF-11-2020-0743 3. Ajeeb, W., Thieleke Da Silva, R.R.S., and Murshed, S.M.S., Experimental Investigation of Heat Transfer Performance of Al2O3 Nanofluids in a Compact Plate Heat Exchanger, Appl. Therm. Eng., vol. 218, Article ID 119321, 2023. DOI: 10.1016/j.applthermaleng.2022.119321 4. Akyurek, E.F., Gelis, K., Sahin, B., and Manay, E., Experimental Analysis for Heat Transfer of Nanofluid with Wire Coil Turbulators in a Concentric Tube Heat Exchanger, Results Phys., vol. 9, pp. 376-389, 2018. DOI: 10.1016/j.rinp.2018.02.067 5. Alqarni, M.M., Ibrahim, M., Assiri, T.A., Saeed, T., Mousa, A., and Ali, V., Two-Phase Simulation of a Shell and Tube Heat Exchanger Filled with Hybrid Nanofluid, Eng. Anal. Bound. Elem., vol. 146, pp. 80-88, 2023. DOI: 10.1016/j.enganabound. 2022.10.001
|
|