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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한기계학회 Journal of Mechanical Science and Technology Journal of Mechanical Science and Technology Vol.21 No.2
- 발행연도
- 2007.2
- 수록면
- 303 - 310 (8page)
이용수
초록· 키워드
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In this study, the effect of carbon nanotubes (CNTs) on nucleate boiling heat transfer is investigated. Three refrigerants of R22, R123, R134a, and water were used as working fluids and 1.0 vol.% of CNTs was added to the working fluids to examine the effect of CNTs. Experimental apparatus was composed of a stainless steel vessel and a plain horizontal tube heated by a cartridge heater. All data were obtained at the pool temperature of 7℃ for all refrigerants and 100℃ for water in the heat flux range of 10~80 ㎾/㎡, Test results showed that CNTs increase nucleate boiling heat transfer coefficients for all fluids. Especially, large enhancement was observed at low heat fluxes of less than 30 ㎾/㎡. With increasing heat flux, however, the enhancement was suppressed due to vigorous bubble generation. Fouling on the heat transfer surface was not observed during the course of this study. Optimum quantity and type of CNTs and their dispersion should be examined for their commercial application to enhance nucleate boiling heat transfer in many applications.
목차
1. Introduction
2. Experiments
3. Results and Discussion
4. Conclusions
Acknowledgments
References
참고문헌 (16)
참고문헌 신청
Ajayan, P. M., 1999, "Nanotubes From Carbon," Chern. Rev., Vol.99, pp.1787~1799.
Bang, I. C. and Chang, S. H., 2004, "Boiling Heat Transfer Performance and Phenomena of Al2O3-Water Nano Fluids From a Plain Surface in a Pool," Pro. ICAPP, pp.1~7.
Cooper, M. G., 1982, "Correlations for Nucleate Boiling Formulation Using Reduced Properties," PCH, Vol.3, No.2, pp.89~111.
Das, S. K., Putra, N. and Roetzel, W., 2003, "Pool Boiling Charactersitics of Nano Fluids," Int. J. Heat Mass Transfer, Vol.46, pp.851~862.
Dresselhaus, M. S., Dresselhaus, G. and Avouris, P., 2001, "Carbon Nanotubes: Synthesis, Structure," Properties and Applications, Eds.; Springer, New York, Vol.80.
Bang, I. C. and Chang, S. H., 2004, "Boiling Heat Transfer Performance and Phenomena of Al2O3-Water Nano Fluids From a Plain Surface in a Pool," Pro. ICAPP, pp.1~7.
Cooper, M. G., 1982, "Correlations for Nucleate Boiling Formulation Using Reduced Properties," PCH, Vol.3, No.2, pp.89~111.
Das, S. K., Putra, N. and Roetzel, W., 2003, "Pool Boiling Charactersitics of Nano Fluids," Int. J. Heat Mass Transfer, Vol.46, pp.851~862.
Dresselhaus, M. S., Dresselhaus, G. and Avouris, P., 2001, "Carbon Nanotubes: Synthesis, Structure," Properties and Applications, Eds.; Springer, New York, Vol.80.
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