그래핀과 탄소나노튜브의 형상에 따른 나노유체의 열전도도 특성 비교 연구
A Comparative Study on the Characteristics of Nanofluids to the Shape of Graphene and Carbon Nanotube
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Recently, high-thermal-conductivity graphene and carbon nanotube nanoparticles have attracted particularly close attention from researchers. In the present study, the thermal conductivity and viscosity properties of two kinds of graphene and carbon nanotube nanofluids added to distilled water - two graphenes and carbon nanotubes of differing size - were compared and analyzed. The thermal conductivities of the nanofluids, formulated in the usual manner by adding graphene and carbon nanotube to distilled water and subjecting the mixture to ultrasonic dispersion, were measured by the transient hot-wire method, and the viscosities were determined using a rotational digital viscometer. As a result, we concluded that the nanofluid of small particle diameter of graphene have outstanding properties as heat transfer media, due to their excellent thermal conductivity and viscosity, compared with the other nanofluid.
Abstract
Recently, high-thermal-conductivity graphene and carbon nanotube nanoparticles have attracted particularly close attention from researchers. In the present study, the thermal conductivity and viscosity properties of two kinds of graphene and carbon nanotube nanofluids added to distilled water - two graphenes and carbon nanotubes of differing size - were compared and analyzed. The thermal conductivities of the nanofluids, formulated in the usual manner by adding graphene and carbon nanotube to distilled water and subjecting the mixture to ultrasonic dispersion, were measured by the transient hot-wire method, and the viscosities were determined using a rotational digital viscometer. As a result, we concluded that the nanofluid of small particle diameter of graphene have outstanding properties as heat transfer media, due to their excellent thermal conductivity and viscosity, compared with the other nanofluid.
참고문헌 (14)
- Das. S. K., "Nanofluids Science and Technology" (2008), John Wiley & Sons, Inc
- Novoselov. K.S., "Electric Field Effect in Atomically Thin Carbon Films", Science, 306, pp.666~ (2004)
- Novoselov. K.S., "Two-dimensi onal gas of massless Dirac fermions in graphene", Nature, 438, pp.197~ (2005)
- Geim. A.K., "Carbon wonderland", Scientific American, 298, pp.90~97 (2008)
- Choi, S. U. S., "Anomalous thermal conductivity enhancement in nanotube suspensions", Applied Physics Letter, 79(14), pp.2252~2254 (2001)
- Liu, M. S., "Enhancement of thermal conductivity with carbon nanotube for nanofluids", International Communicati- ons in Heat and Mass Transfer, 32(9), pp.1202~1210 (2005)
- Baby. T.T., "Inverstigation of thermal and electrical conductivity of graphene based nanofluids", Journal of Applied Physics, 108, pp.124308~ (2010)
- Gupta. S.S., "Thermal conductivity enhancement of nanofluids containing graphene nanosheets", Journal of Applied Physics, 110, pp.084302~ (2011)
- Yu. W., "Significant thermal conductivity enhancement for nanofluids containing graphene nanosheets", Physics Letters, 375, pp.1323~1328 (2011)
- Bently, J. P., "Temperature sensor characteristics and measurement system design", Journal of Physics E: Scientific Instruments, 17, pp.430~435 (1984)
- Nagasaka, Y., "Absolute Measurement of the thermal conductivity of electrically conducting liquids by the transient hot-wire method", Journal of Physics E: Scientific Instruments, 14, pp.1435~1440 (1981)
- Kim, N. J., "A study on the characteristics of carbon nanofluids at the room temperature", International Communications in Heat and Mass Transfer, 38(3), pp.313~318 (2011)
- Hamilton. R. L., "Thermal conductivity of heterogeneous two- component systems", Ind. Eng. Chem. Fundamen., 1, pp.187~ (1962)
- Gao. L., "Differential effective medium theory for thermal conductivity in nanofluids", Physics Letters, 348, pp.355~360 (2006)