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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.19 No.1
- 발행연도
- 2005.1
- 수록면
- 156 - 163 (8page)
이용수
초록· 키워드
오류제보하기
An experimental study of boiling heat transfer with refrigerants R-410A and R-407C is presented. The present paper is focused on pressure drop and boiling heat transfer coefficient of the refrigerants inside a horizontal smooth minichannel. To evaluate the diameter size effect on pressure and heat transfer characteristics, minichannels with inner diameters of 1.5 mm and 3.0 mm and with lengths of 1500mm and 3000mm respectively are used. The pressure drop increases with mass flux and heat flux for both inner tube diameters and for both the refrigerants. The pressure drop ofR-407C is higher than that of R-41OA, but the heat transfer coefficient of R-41OA is higher than of R-407C at the low quality region. The heat transfer coefficient in the tube with an inner diameter of 1.5 mm is higher than that of 3.0 mm diameter tube at the low quality region. The comparison of present heat transfer coefficient with the predictions of some previous correlations shows a large deviation. Therefore, there is a necessity to develop a new correlation.
목차
Abstract
Nomenclature
1. Introudction
2. Experimental Apparatus and Methods
3. Results and discussion
4. Concluding Remarks
Acknowledgements
References
참고문헌 (15)
참고문헌 신청
Barbosa, J.R. and Hewitt, G.F., 2001, "Forced Convective Boiling of Binary Mixtures in Annular Flow. Part I: Liquid Phase Mass Transport," Int J. of Heat and Mass Transfer, 44, pp.1465~1474.
Barbosa, J.R. and Hewitt, G.F., 2001, "Forced Convective Boiling of Binary Mixtures in Annular Flow. Part II: Heat and Mass Transfer," Int J. of Heat and Mass Transfer, 44, pp.1475~1484.
Gungor, K.E. and Winterton, H.S., 1987, "Simplified General Correlation for Saturated Flow Boiling and Comparisons of Correlations with Data," Chem.Eng.Res, 65, pp.148~156.
Jung, D.S., McLinden, M., Radermacher, R. and Didion, D., 1989, "A Study of Flow Boiling Heat Transfer with Refrigerant Mixtures," Int J. of Heat and mass Transfer, 32 (9), pp.1751~1764.
Jung, D. and Radermacher, R., 1993, "Prediction of Evaporation Heat Transfer Coefficient and Pressure Drop of Refrigerant Mixtures," Int J. Refrig., 16 (5), pp.330~338.
Barbosa, J.R. and Hewitt, G.F., 2001, "Forced Convective Boiling of Binary Mixtures in Annular Flow. Part II: Heat and Mass Transfer," Int J. of Heat and Mass Transfer, 44, pp.1475~1484.
Gungor, K.E. and Winterton, H.S., 1987, "Simplified General Correlation for Saturated Flow Boiling and Comparisons of Correlations with Data," Chem.Eng.Res, 65, pp.148~156.
Jung, D.S., McLinden, M., Radermacher, R. and Didion, D., 1989, "A Study of Flow Boiling Heat Transfer with Refrigerant Mixtures," Int J. of Heat and mass Transfer, 32 (9), pp.1751~1764.
Jung, D. and Radermacher, R., 1993, "Prediction of Evaporation Heat Transfer Coefficient and Pressure Drop of Refrigerant Mixtures," Int J. Refrig., 16 (5), pp.330~338.
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