Abstract
Convection heat transfer and pressure drop of singular nanofluids (SNFs) including CuO/water, CaCO3/water, SiO2/water, binary hybrid nanofluids (BHNFs) containing CaCO3/SiO2/water and ternary hybrid nanofluids (THNFs) comprising CuO/CaCO3/SiO2/water through horizontal circular pipe under turbulent flow regime were studied, experimentally. Experimental results elucidated that the addition of nano-CaCO3 and nano-SiO2 particles to the base liquid enhanced heat transfer rate and reduced pressure drop, significantly. The uppermost augmentation in heat transfer coefficient (HTC) detected in THNFs (with 60:30:10 volume fractions) and the lowest enhancement in pressure drop belonged to CuO/CaCO3/SiO2/water THNFs (with 60:30:10 volume fractions, respectively). In addition, maximum enhancement in HTC obtained as 72% and pressure drop decreased as 48%. So, the flow resistance of the nanofluids reduced considerably relative to distilled water (DW). HTCs of supplied nanofluids were compared with some theoretical correlations.
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Abbreviations
- A :
-
Tube cross-sectional area (m2)
- C p :
-
Specific heat capacity (Jg−1k−1)
- h :
-
Heat transfer coefficient
- \(K\) :
-
Thermal conductivity (Wm−1 k−1)
- L :
-
Tube length (m)
- Nu:
-
Nusselt number
- Pr:
-
Prandtl number
- Re:
-
Reynolds number
- \(T\) :
-
Temperature (°C)
- u :
-
Average fluid velocity (ms−1)
- \(\rho\) :
-
Density (g cm−3)
- φ :
-
Volume fraction
- μ :
-
Dynamic viscosity (Pa s)
- bf:
-
Base fluid
- nf:
-
Nanofluid
- np:
-
Nanoparticle
- w :
-
Wall
- b :
-
Bulk
- DW:
-
Distilled water
- SDS:
-
Sodium dodecyl sulfate
- THNFs:
-
Ternary hybrid nanofluids
- DHNFs:
-
Dual hybrid nanofluids
- exp:
-
Experimental
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Mousavi, M., Darvishi, P. & Pouranfard, A. Comparative study of heat transfer and pressure drop in turbulent flow of a singular and hybrid nanofluids into a horizontal pipe. J Therm Anal Calorim 148, 14375–14384 (2023). https://doi.org/10.1007/s10973-023-12570-x
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DOI: https://doi.org/10.1007/s10973-023-12570-x