TY - JOUR
T1 - The effect of nano encapsulated phase change materials and nanoparticles on turbulent heat transport
T2 - A conical diffuser scenario
AU - Iachachene, Farida
AU - Haddad, Zoubida
AU - Arıcı, Müslüm
AU - Abu-Nada, Eiyad
AU - Sheremet, Mikhail A.
N1 - Publisher Copyright:
© 2022
PY - 2022/8/1
Y1 - 2022/8/1
N2 - The present work investigates turbulent flow of single and hybrid nanofluids filled in a conical diffuser. The heat transfer coefficients and pressure losses are analyzed at various Reynolds numbers and nanoparticle volume fractions. The diffuser is filled with Al2O3, nano encapsulated phase change material NEPCM, and NEPCM_Al2O3 nanofluids. The thermophysical parameters of all nanofluids were determined using a novel methodology based on the thermodynamic equilibrium data for binary liquid mixtures. A notable novelty in the current work is the introduction of an innovative method of hybrid nanofluids composed of nanoparticles with and without phase change material (PCM). When compared to the other nanofluids tested, the NEPCM nanofluid presented the lowest pressure loss and the greatest heat transfer improvement within the diffuser. The Nusselt number of NEPCM nanofluids is enhanced by 15%, while for NEPCM_Al2O3 and Al2O3 nanofluids is increased by 10% and 6%, respectively. Similarly, the pressure drop is greater as compared to the base fluid, where the pressure drop is increased by 1%, 3.5%, and 5% for NEPCM, Al2O3, and NEPCM_Al2O3 nanofluid, respectively.
AB - The present work investigates turbulent flow of single and hybrid nanofluids filled in a conical diffuser. The heat transfer coefficients and pressure losses are analyzed at various Reynolds numbers and nanoparticle volume fractions. The diffuser is filled with Al2O3, nano encapsulated phase change material NEPCM, and NEPCM_Al2O3 nanofluids. The thermophysical parameters of all nanofluids were determined using a novel methodology based on the thermodynamic equilibrium data for binary liquid mixtures. A notable novelty in the current work is the introduction of an innovative method of hybrid nanofluids composed of nanoparticles with and without phase change material (PCM). When compared to the other nanofluids tested, the NEPCM nanofluid presented the lowest pressure loss and the greatest heat transfer improvement within the diffuser. The Nusselt number of NEPCM nanofluids is enhanced by 15%, while for NEPCM_Al2O3 and Al2O3 nanofluids is increased by 10% and 6%, respectively. Similarly, the pressure drop is greater as compared to the base fluid, where the pressure drop is increased by 1%, 3.5%, and 5% for NEPCM, Al2O3, and NEPCM_Al2O3 nanofluid, respectively.
KW - Forced convection
KW - Hybrid/single nanofluids
KW - Nano-encapsulated PCM
KW - Nanofluids
KW - Turbulent flow
UR - http://www.scopus.com/inward/record.url?scp=85129485530&partnerID=8YFLogxK
U2 - 10.1016/j.est.2022.104703
DO - 10.1016/j.est.2022.104703
M3 - Article
AN - SCOPUS:85129485530
SN - 2352-152X
VL - 52
JO - Journal of Energy Storage
JF - Journal of Energy Storage
M1 - 104703
ER -