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Performance of Evaporation Heat Transfer Enhancement and Pressure Drop for Liquid Nitrogen
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Performance of Evaporation Heat Transfer Enhancement and Pressure Drop for Liquid Nitrogen
Nam, Sang-Chul; Lee, Sang-Chun; Park, Byung-Duck;
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An experiment was carried out to evaluate the heat transfer enhancement and the pressure drop characteristics for liquid nitrogen using wire-coil-insert technique under horizontal two-phase conditions. The tube inner diameters were 8 mm and 15 mm, respectively and the tube length was 4.7 m. The helix angle of the wire coil insert was and its length was 4.7 m. Heat transfer coefficients for both the plain and the enhanced test tubes were calculated from the measurements of temperatures, flow rates and pressure drops. A correlation in a power-law relationship of the Nusselt number, Reynolds number and Prandtl number for the heat transfer was proposed which can be available for design of cryogenic heat exchangers. The correlation showed that heat transfer coefficients for the wire-coil inserts were much higher than those for plain tubes, increased by more than times depending upon the range of the equivalent Reynolds number. The correlation was compared with other various correlations in the turbulent flow conditions.
Cryogenic Fluid;Cryogenic Heat Exchanger;Wire Coil Inserts;Volumetric Hydraulic Diameter;
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평활관 및 와이어코일을 삽입한 열전달촉진관에서 액체질소의 흐름비등열전달 특성,황지상;윤린;김용찬;정진택;

대한기계학회논문집B, 2005. vol.29. 8, pp.927-933 crossref(new window)
Randall F. Barron, 1985, Cryogenic system, 2nd edition, Oxford University Press, New Yark, p. 3

宮田嘉明, 安部光一, 1996, LNG:液化から冷熱利用まで,' 日本冷凍協會誌, Vol. 71, No. 819, pp. 3-9

宮田嘉明, 1993, '天然ガス時代のLNG技術,' 日本機械學會誌, Vol. 96, No. 901, pp. 13 -19

Clark, John A., 1968, 'Cryogenic Heat Transfer,' Advances in Heat Transfer, Vol. 5, pp. 325-517

Chen, J. C., 1966 'Correlations of Boiling Heat Transfer to Saturated Fluids in Convective Flow,' Ind. Eng. Chem. Proc. Des. Div., Vol. 5, pp. 322 crossref(new window)

Zuber, N. and Fried, E., 1961, 'Two-Phase Flow and Boiling Heat Transfer to Cryogenic Liquids,' Combustion and Liquid Rocket Conf, April 1961, Miami, Florida

Kekjiro Mori, Kazumi Kasahara & Uuji Shiota, 1986, 'A Study on Steam-Heating LNG Vaporizers,' 三井造船技報, 第124號, Vol. 37-43

三浦俊泰, 1994, 'LNG冷熟利用汚泥リサイクル設備,' NKK技報, No. 147, pp. 20-21

한승탁, 김종보, 1994, '직접 접촉식 액화천연 가스기화기의 특성에 관한 연구,' 대한기계학회논문집, Vol. 19, No.4, pp. 903-911

Bergles, A. E., Ninnalan, V., Junkan, G. H. and Webb, R. L., 1983, 'Bibliography on Augmentation of Convective Heat and Mass Transfer II,' Heat Transfer Laboratory Report HTL-31, ISU-ERI-Ames-84221, Jowa State Univ., December

Sethumadhavan, R. & Rao, M. R, 1983, 'Turbulent Flow Heat Transfer and Fluid Friction in Helical-Wire-Coil-Inserted Tubes,' Int. J. Heat Mass Transfer, Vol. 26 No. 12, pp. 1833 -1845

Webb, Ralph L., 1994, Principles of Enhanced Heat Transfer, Wiley & Sons, Inc. pp: 1-30

ASHRAE, 1994, ASHRAE Handbook of Fundamentals, New York, pp. 20.5-20.7

Cavallini, A. & Zecchin, R., 1974, 'A Dimensionless Correlation for the Heat Transfer in Forced Convection Condensation,' Proc. 5th Int. Heat Transfer Conf, Tokyo, Vol. 3, pp. 309-313

Webb, Ralph L., 1994, Principles of Enhanced Heat Transfer, Wiley & Sons, Inc. pp. 188 - 191

John. G. Coller, 1972, Convective Boiling and Condensation, Second Ed., McGraw-Hill, UK, pp. 39-41

Sieder, E. N. and G. E. Tate, 1936, 'Heat Transfer and Pressure Drop of Liquids in Tubes,' Ind. Eng. Chern., Vol. 28 : pp. 1429-1435 crossref(new window)

Kummar, R. & Judd, R. L., 1970, 'Heat Transfer with Coiled Wire Turbulence Promoters,' Canadian Journal of Chemical Engineering, Vol. 48, pp. 378-383