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Research Papers: Experimental Techniques

Critical Invalidation of Temperature Dependence of Nanofluid Thermal Conductivity Enhancement

[+] Author and Article Information
Kisoo Han

Mechanical Engineering Department,
Kyung Hee University,
Yongin 449-701, South Korea

Wook-Hyun Lee

Korea Institute of Energy Research,
Daejon 305-343, South Korea

Clement Kleinstreuer

Mechanical and Aerospace Engineering Department,
North Carolina State University,
Raleigh, NC 27695-7910

Junemo Koo

Mechanical Engineering Department,
Kyung Hee University,
Yongin 449-701, South Korea
e-mail: jmkoo@khu.ac.kr

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 15, 2012; final manuscript received January 18, 2013; published online April 11, 2013. Assoc. Editor: Oronzio Manca.

J. Heat Transfer 135(5), 051601 (Apr 11, 2013) (9 pages) Paper No: HT-12-1435; doi: 10.1115/1.4023544 History: Received August 15, 2012; Revised January 18, 2013

Of interest is the accurate measurement of the enhanced thermal conductivity of certain nanofluids free from the impact of natural convection. Owing to its simplicity, wide range of applicability and short response time, the transient hot-wire method (THWM) is frequently used to measure the thermal conductivity of fluids. In order to gain a sufficiently high accuracy, special care should be taken to assure that each measurement is not affected by initial heat supply delay, natural convection, and signal noise. In this study, it was found that there is a temperature limit when using THWM due to the incipience of natural convection. The results imply that the temperature-dependence of the thermal conductivity enhancement observed by other researchers might be misleading when ignoring the impact of natural convection; hence, it could not be used as supporting evidence of the effectiveness of micromixing due to Brownian motion. Thus, it is recommended that researchers report how they keep the impact of the natural convection negligible and check the integrity of their measurements in the future researches.

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References

Choi, S. U. S., and Eastman, J. A., 1995, “Enhancing Thermal Conductivity of Fluids With Nanoparticles,” Developments Applications of Non-Newtonian Flows, D. A. Siginer, and H. P. Wang, eds., FED/MD, ASME, New York, Vol. 231/66, pp. 99–105.
Keblinski, P., Philpot, S. R., Choi, S. U. S., and Eastman, J. A., 2002, “Mechanisms of Heat Flow in Suspensions of Nano-Sized Particles (Nanofluids),” Int. J. Heat Mass Transfer, 45, pp. 855–863. [CrossRef]
Kleinstreuer, C., and Feng, Y., 2011, “Experimental and Theoretical Studies on Nanofluid Thermal Conductivity Enhancement: A Review,” Nanoscale Res. Lett., 6, p. 229. [CrossRef] [PubMed]
Koo, J., and Kleinstreuer, C., 2005, “Impact Analysis of Nanoparticle Motion Mechanisms on the Thermal Conductivity of Nanofluids,” Int. Commun. Heat Mass Transfer, 32, pp. 1111–1118. [CrossRef]
Prasher, R., Phelan, P. E., and Bhattacharya, P., 2006, “Effect of Aggregation Kinetics on the Thermal Conductivity of Nanoscale Colloidal Solutions,” Nano Lett., 6, pp. 1529–1534. [CrossRef] [PubMed]
Kleinstreuer, C., and Li, J., 2008, “Discussion: ‘Effects of Various Parameters on Nanofluid Thermal Conductivity’ (Jang, S. P., and Choi, S. D. S., 2007, ASME J. Heat Transfer, 129, pp. 617–623),” ASME J. Heat Trans., 130(2), p. 025501. [CrossRef]
Jang, S. P., and Choi, S. U. S., 2007, “Effects of Various Parameters on Nanofluid Thermal Conductivity,” ASME J. Heat Trans., 129(5), pp. 617–623. [CrossRef]
Patel, H. E., Sundararajan, T., and Das, S. K., 2010, “An Experimental Investigation Into the Thermal Conductivity Enhancement in Oxide and Metallic Nanofluids,” J. Nanopart. Res., 12(3), pp. 1015–1031. [CrossRef]
Kleinstreuer, C., and Feng, Y., 2012, “Thermal Nanofluid Property Model With Application to Nanofluid Flow in a Parallel-Disk System—Part I: A New Thermal Conductivity Model for Nanofluid Flow,” ASME J. Heat Trans., 134(5), p. 051002. [CrossRef]
Paul, G., Chopkar, M., Manna, I., Das, P. K., 2010, “Techniques for Measuring the Thermal Conductivity of Nanofluids: A Review,” Renewable Sustainable Energy Rev., 14, pp. 1913–1924. [CrossRef]
Assael, M., Antoniadis, K., and Wakeham, W., 2010, “Historical Evolution of the Transient Hot-Wire Technique,” Int. J. Thermophys., 31, pp. 1051–1072. [CrossRef]
Gross, U., Song, Y., and Hahne, E., 1992, “Thermal Conductivity of the New Refrigerants R134a, R152a, and R123 Measured by the Transient Hot-Wire Method,” Int. J. Thermophys., 13, pp. 957–983. [CrossRef]
Hong, S. W., Kang, Y. T., Kleinstreuer, C., and Koo, J., 2011, “Impact Analysis of Natural Convection on Thermal Conductivity Measurements of Nanofluids Using the Transient Hot-Wire Method,” Int. J. Heat Mass Transfer, 54, pp. 3448–3456. [CrossRef]
Vadasz, J. J., Govender, S., and Vadasz, P., 2005, “Heat Transfer Enhancement in Nano-Fluids Suspensions: Possible Mechanisms and Explanations,” Int. J. Heat Mass Transfer, 48, pp. 2673–2683. [CrossRef]
Putra, N., Roetzel, W., and Das, S. K., 2003, “Natural Convection of Nano-Fluids,” Heat Mass Transfer, 39, pp. 775–784. [CrossRef]
Li, C. H., and Peterson, G. P., 2010, “Experimental Studies of Natural Convection Heat Transfer of Al2O3/DI Water Nanoparticle Suspensions (Nanofluids),” Adv. Mech Eng., 2010, p. 742739. [CrossRef]
Ni, R., Zhou, S. Q., and Xia, K. Q., 2011, “An Experimental Investigation of Turbulent Thermal Convection in Water-Based Alumina Nanofluid,” Phys. Fluids, 23, p. 022005. [CrossRef]
Donzelli, G., Cerbino, R., and Vailati, A., 2009, “Bistable Heat Transfer in a Nanofluid,” Phys. Rev. Lett., 102, p. 104503. [CrossRef] [PubMed]
Corcione, M., 2011, “Rayleigh-Bénard Convection Heat Transfer in Nanoparticle Suspensions,” Int. J. Heat Fluid Flow, 32, pp. 65–77. [CrossRef]
Hwang, K. S., Lee, J., and Jang, S. P., 2007, “Buoyancy-Driven Heat Transfer of Water-Based Al2O3 Nanofluids in a Rectangular Cavity,” Int. J. Heat Mass Transfer, 50, pp. 4003–4010. [CrossRef]
Kim, J., Kang, Y. T., and Choi, C. K., 2004, “Analysis of Convective Instability and Heat Transfer Characteristics of Nanofluids,” Phys. Fluids, 16, pp. 2395–2401. [CrossRef]
Tzou, D. Y., 2008, “Thermal Instability of Nanofluids in Natural Convection,” Int. J. Heat Mass Transfer, 51, pp. 2967–2979. [CrossRef]
Jang, S. P., and Choi, S. U. S., 2004, “Role of Brownian Motion in the Enhanced Thermal Conductivity of Nanofluids,” Appl. Phys. Lett., 84, pp. 4316–4318. [CrossRef]
Das, S. K., Putra, N., Thiesen, P., and Roetzel, W., 2003, “Temperature Dependence of Thermal Conductivity Enhancement for Nanofluids,” ASME. J. Heat Trans., 125(4), pp. 567–574. [CrossRef]
Prasher, R., Bhattacharya, P., and Phelan, P. E., 2005, “Thermal Conductivity of Nanoscale Colloidal Solutions (Nanofluids),” Phys. Rev. Lett., 94, p. 025901. [CrossRef] [PubMed]
Chon, C. H., and Kihm, K. D., 2005, “Thermal Conductivity Enhancement of Nanofluids by Brownian Motion,” ASME J. Heat Trans., 127(8), p. 810. [CrossRef]
Murshed, S. M. S., Leong, K. C., and Yang, C., 2008, “Investigations of Thermal Conductivity and Viscosity of Nanofluids,” Int. J. Therm. Sci., 47, pp. 560–568. [CrossRef]
Mintsa, H. A., Roy, G., Nguyen, C. T., and Doucet, D., 2009, “New Temperature Dependent Thermal Conductivity Data for Water-Based Nanofluids,” Int. J. Therm. Sci., 48, pp. 363–371. [CrossRef]
Duangthongsuk, W., and Wongwises, S., 2009, “Measurement of Temperature-Dependent Thermal Conductivity and Viscosity of TiO2-Water Nanofluids,” Exp. Therm. Fluid Sci., 33, pp. 706–714. [CrossRef]
Vajjha, R. S., and Das, D. K., 2009, “Experimental Determination of Thermal Conductivity of Three Nanofluids and Development of New Correlations,” Int. J. Heat Mass Transfer, 52, pp. 4675–4682. [CrossRef]
Teng, T. P., Hung, Y. H., Teng, T. C., Mo, H. E., and Hsu, H. G., 2010, “The Effect of Alumina/Water Nanofluid Particle Size on Thermal Conductivity,” Appl. Therm. Eng., 30, pp. 2213–2218. [CrossRef]
Turgut, A., Tavman, I., Chirtoc, M., Schuchmann, H., Sauter, C., and Tavman, S., 2009, “Thermal Conductivity and Viscosity Measurements of Water-Based TiO2 Nanofluids,” Int. J. Thermophys., 30, pp. 1213–1226. [CrossRef]
Shima, P., Philip, J., and Raj, B., 2010, “Synthesis of Aqueous and Nonaqueous Iron Oxide Nanofluids and Study of Temperature Dependence on Thermal Conductivity and Viscosity,” J. Phys. Chem. C, 114, pp. 18825–18833. [CrossRef]
Lee, W. H., Rhee, C. K., Koo, J., Lee, J., Jang, S. P., Choi, S. U. S., Lee, K. W., Bae, H. Y., Lee, G. J., Kim, C. K., Hong, S. W., Kwon, Y., Kim, D., Kim, S. H., Hwang, K. S., Kim, H. J., Ha, H. J., Lee, S. H., Choi, C. J., and Lee, J. H., 2011, “Round-Robin Test on Thermal Conductivity Measurement of ZnO Nanofluids and Comparison of Experimental Results With Theoretical Bounds,” Nanoscale Res. Lett., 6, p. 258. [CrossRef] [PubMed]
Carslaw, H. S., and Jaeger, J. C., 1959, Conduction of Heat on Solids, Oxford University Press, New York, pp. 188–213.
Roder, H. M., Perkins, R. A., Laesecke, A., and de Castro, C. A. N., 2000, “Absolute Steady-State Thermal Conductivity Measurements by Use of a Transient Hot-Wire System,” J. Res. Natl. Inst. Stand. Technol., 105, pp. 221–253. [CrossRef]
Kostic, M., and Simham, K. C., 2009, “Computerized, Transient Hot-Wire Thermal Conductivity (HWTC) Apparatus for Nanofluids,” Proceedings of the 6th WSEAS International Conference on Heat and Mass Transfer (HMT’09).
Codreanu, C., Codreanu, N., and Obreja, V., 2010, “Experimental Set-Up for the Measurement of the Thermal Conductivity of Liquids,” Rom. J. Inf. Sci. Technol., 10, pp. 215–231.
Lee, S., and Kang, K., 2007, “Validation Test for Transient Hot-wire Method to Evaluate the Temperature Dependence of Nanofluids,” Trans. Korean Soc. Mech. Eng., B, 31, pp. 341–348 (in Korean). [CrossRef]
Berendsen, H. J. C., 2011, A Student's Guide to Data and Error Analysis, Cambridge University Press, Cambridge, UK.
Morkoç, H., and Özgür, Ü., 2009, Zinc Oxide: Fundamentals, Materials and Device Technology, Wiley-VCH, Weinheim, Germany.

Figures

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Fig. 1

Definitions of temperature history, start- and end-time in the data

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Fig. 2

Schematics of the apparatus for data collection using the transient hot-wire method

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Fig. 3

SEM images of nanoparticles used in the nanofluids

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Fig. 4

Effects of temperature data-range selections on thermal conductivity determination for: (a) water; (b) water-based Ag nanofluid at 313 K; (c) EG; and (d) EG-based ZnO nanofluid at 303 K

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Fig. 5

Comparison of measurement margins for different fluids

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Fig. 6

Comparison of thermal conductivity measurements between pure base fluids and nanofluids versus the predictions by Maxwell's model

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Fig. 7

Comparison between research groups concerning the temperature dependence of effective thermal conductivity enhancement of nanofluids: (a) other groups; and (b) current study

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Fig. 8

Effect of temperature data-range selection on the estimation of the nanofluid effective thermal conductivity

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Fig. 9

Effect of particle volume fraction on the incipience of natural convection for EG-based ZnO nanofluids

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Fig. 10

Thermal conductivity enhancement with the variation of the ZnO particle volume fraction in EG-based nanofluids

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