Measurement of effective thermal conductivity of CNT-nanofluids by transient short-wire method

Masamichi Kohno; Koichi Kimura; Shogo Moroe; Yasuyuki Takata; Peter L. Woodfield; Motoo Fujii

doi:10.1115/MNHMT2009-18068

Measurement of effective thermal conductivity of CNT-nanofluids by transient short-wire method

Masamichi Kohno, Koichi Kimura, Shogo Moroe, Yasuyuki Takata, Peter L. Woodfield, Motoo Fujii

Thermal Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Thermal conductivity and thermal diffusivity of CNT-nanofluids and Al ₂O₃-nanofulids were measured by the transient short-hot-wire method. The uncertainty of their measurements is estimated to be within 1% for the thermal conductivity and 5% for the thermal diffusivity. Three different shapes of Al₂O₃ particles were prepared for Al₂O₃-water nanofluids. For the thermal conductivity of Al₂O₃-water nanofluids, there are differences in the enhancement of thermal conductivity for differences in particle shapes. Hardly any enhancement of thermal conductivity was observed for SWCNT-water nanofluids because the volume fraction of SWCNT was extremely low. However, we consider by increasing the volume fraction of SWCNTs, it will be possible to enhance the thermal conductivity.

Original language	English
Title of host publication	Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Pages	407-412
Number of pages	6
DOIs	https://doi.org/10.1115/MNHMT2009-18068
Publication status	Published - 2010
Event	ASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009 - Shanghai, China Duration: Dec 18 2009 → Dec 21 2009

Publication series

Name	Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Volume	1

Other

Other	ASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009
Country/Territory	China
City	Shanghai
Period	12/18/09 → 12/21/09

All Science Journal Classification (ASJC) codes

Fluid Flow and Transfer Processes

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10.1115/MNHMT2009-18068

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Kohno, M., Kimura, K., Moroe, S., Takata, Y., Woodfield, P. L., & Fujii, M. (2010). Measurement of effective thermal conductivity of CNT-nanofluids by transient short-wire method. In Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009 (pp. 407-412). (Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009; Vol. 1). https://doi.org/10.1115/MNHMT2009-18068

Measurement of effective thermal conductivity of CNT-nanofluids by transient short-wire method. / Kohno, Masamichi; Kimura, Koichi; Moroe, Shogo et al.
Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009. 2010. p. 407-412 (Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kohno, M, Kimura, K, Moroe, S, Takata, Y, Woodfield, PL & Fujii, M 2010, Measurement of effective thermal conductivity of CNT-nanofluids by transient short-wire method. in Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009. Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009, vol. 1, pp. 407-412, ASME 2009 Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009, Shanghai, China, 12/18/09. https://doi.org/10.1115/MNHMT2009-18068

Kohno M, Kimura K, Moroe S, Takata Y, Woodfield PL, Fujii M. Measurement of effective thermal conductivity of CNT-nanofluids by transient short-wire method. In Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009. 2010. p. 407-412. (Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009). doi: 10.1115/MNHMT2009-18068

Kohno, Masamichi ; Kimura, Koichi ; Moroe, Shogo et al. / Measurement of effective thermal conductivity of CNT-nanofluids by transient short-wire method. Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009. 2010. pp. 407-412 (Proceedings of the ASME Micro/Nanoscale Heat and Mass Transfer International Conference 2009, MNHMT2009).

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abstract = "Thermal conductivity and thermal diffusivity of CNT-nanofluids and Al 2O3-nanofulids were measured by the transient short-hot-wire method. The uncertainty of their measurements is estimated to be within 1% for the thermal conductivity and 5% for the thermal diffusivity. Three different shapes of Al2O3 particles were prepared for Al2O3-water nanofluids. For the thermal conductivity of Al2O3-water nanofluids, there are differences in the enhancement of thermal conductivity for differences in particle shapes. Hardly any enhancement of thermal conductivity was observed for SWCNT-water nanofluids because the volume fraction of SWCNT was extremely low. However, we consider by increasing the volume fraction of SWCNTs, it will be possible to enhance the thermal conductivity.",

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AB - Thermal conductivity and thermal diffusivity of CNT-nanofluids and Al 2O3-nanofulids were measured by the transient short-hot-wire method. The uncertainty of their measurements is estimated to be within 1% for the thermal conductivity and 5% for the thermal diffusivity. Three different shapes of Al2O3 particles were prepared for Al2O3-water nanofluids. For the thermal conductivity of Al2O3-water nanofluids, there are differences in the enhancement of thermal conductivity for differences in particle shapes. Hardly any enhancement of thermal conductivity was observed for SWCNT-water nanofluids because the volume fraction of SWCNT was extremely low. However, we consider by increasing the volume fraction of SWCNTs, it will be possible to enhance the thermal conductivity.

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Measurement of effective thermal conductivity of CNT-nanofluids by transient short-wire method

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