Experimental and Theoretical Studies of Different Parameters on the Thermal Conductivity of Nanofluids
Abstract
:1. Introduction
2. Experimental Method
2.1. Nanofluid Preparation
2.2. Measurement of Thermal Conductivity
3. Results and Discussion
3.1. Effect of Different Parameters
3.2. Theoretical Model
3.3. Discussion
3.3.1. Derivation of Exponents C1–C4
3.3.2. Comparison with the Previous Model
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Liquid | Thermal Conductivity/(W/(m-K)) | Average Value | Standard Deviation | ||
---|---|---|---|---|---|
Water | 0.601 | 0.585 | 0.609 | 0.598 | 0.012 |
Ethanol | 0.174 | 0.182 | 0.180 | 0.179 | 0.004 |
Particle Type | Volume Fraction | Particle Size | Shape Factor | Base Fluid | kn/kb |
---|---|---|---|---|---|
Al2O3 | 0.005 | 5 nm | 6 | water | 1.21 |
Al2O3 | 0.01 | 5 nm | 6 | water | 1.25 |
Al2O3 | 0.02 | 5 nm | 6 | water | 1.42 |
Al2O3 | 0.04 | 5 nm | 6 | water | 1.53 |
Al2O3 | 0.01 | 50 nm | 6 | water | 1.27 |
Al2O3 | 0.01 | 100 nm | 6 | water | 1.13 |
CuO | 0.02 | 100 nm | 6 | water | 1.35 |
GO | 0.01 | / | 9 | water | 1.32 |
Models | Expression | Remarks |
---|---|---|
Jang and Choi [39] | is the base fluid molecule diameter, Re is the Reynold number of particles | |
Koo [40] | KB is the Boltzmann constant, is a function of temperature and volume fraction | |
Feng and Kleinstreuer [41] | is the Brownian motion time interval |
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Qin, J.; Tao, Y.; Liu, Q.; Li, Z.; Zhu, Z.; He, N. Experimental and Theoretical Studies of Different Parameters on the Thermal Conductivity of Nanofluids. Micromachines 2023, 14, 964. https://doi.org/10.3390/mi14050964
Qin J, Tao Y, Liu Q, Li Z, Zhu Z, He N. Experimental and Theoretical Studies of Different Parameters on the Thermal Conductivity of Nanofluids. Micromachines. 2023; 14(5):964. https://doi.org/10.3390/mi14050964
Chicago/Turabian StyleQin, Jun, Yuequn Tao, Qiusheng Liu, Zilong Li, Zhiqiang Zhu, and Naifeng He. 2023. "Experimental and Theoretical Studies of Different Parameters on the Thermal Conductivity of Nanofluids" Micromachines 14, no. 5: 964. https://doi.org/10.3390/mi14050964