Ice Slurry Formation in a Cocurrent Liquid-Liquid Flow

›› 2008, Vol. 16 ›› Issue (4): 552-557.

Ice Slurry Formation in a Cocurrent Liquid-Liquid Flow

彭正标, 袁竹林, 梁坤峰, 蔡杰

School of Energy and Environment, Southeast University, Nanjing 210096, China

收稿日期:2007-09-24 修回日期:2008-01-17 出版日期:2008-08-28 发布日期:2008-08-28
通讯作者: YUAN Zhulin, E-mail: zlyuan@seu.edu.cn
基金资助:
the Specialized Research Fund for the Doctoral Program of Higher Education of China(20060286034)

Ice Slurry Formation in a Cocurrent Liquid-Liquid Flow

PENG Zhengbiao, YUAN Zhulin, LIANG Kunfeng, CAI Jie

School of Energy and Environment, Southeast University, Nanjing 210096, China

Received:2007-09-24 Revised:2008-01-17 Online:2008-08-28 Published:2008-08-28
Supported by:
the Specialized Research Fund for the Doctoral Program of Higher Education of China(20060286034)

摘要/Abstract

摘要： A new technique for ice slurry production was explored. Multiple small water-drops were formed in another immiscible chilled liquid by a single-nozzled atomizer and frozen in the fluidized bed by direct contact heat transfer. Experiments were conducted to investigate the dynamic behaviors of the ice crystal making system. The results demonstrate that the ice crystals could be produced continuously and stably in the vertical bed with the circulating coolant of initial temperature below -5℃. The size distribution of the ice crystals appears non-uniform, but is more similar and more uniform at lower oil flow rate. The mean ice crystal size rests seriously with the jet velocity and the oil flow rate. It decreases with decreasing the oil flow rate, and reaches the maximum at an intermediate jet velocity at about 16.5 m·s^-1. The ice crystal size is also closely related to the phenomenon of drop-coalescing, which can be alleviated considerably by reducing the flow rate or lowering the temperature of the carrier oil. However, optimization of liquid-liquid atomization is a more effective approach to produce fine ice crystals of desired size.

关键词: ice slurry, drop-coalescing, ice crystal size distribution, liquid-liquid atomization

Abstract: A new technique for ice slurry production was explored. Multiple small water-drops were formed in another immiscible chilled liquid by a single-nozzled atomizer and frozen in the fluidized bed by direct contact heat transfer. Experiments were conducted to investigate the dynamic behaviors of the ice crystal making system. The results demonstrate that the ice crystals could be produced continuously and stably in the vertical bed with the circulating coolant of initial temperature below -5℃. The size distribution of the ice crystals appears non-uniform, but is more similar and more uniform at lower oil flow rate. The mean ice crystal size rests seriously with the jet velocity and the oil flow rate. It decreases with decreasing the oil flow rate, and reaches the maximum at an intermediate jet velocity at about 16.5 m·s^-1. The ice crystal size is also closely related to the phenomenon of drop-coalescing, which can be alleviated considerably by reducing the flow rate or lowering the temperature of the carrier oil. However, optimization of liquid-liquid atomization is a more effective approach to produce fine ice crystals of desired size.

Key words: ice slurry, drop-coalescing, ice crystal size distribution, liquid-liquid atomization

彭正标, 袁竹林, 梁坤峰, 蔡杰. Ice Slurry Formation in a Cocurrent Liquid-Liquid Flow[J]. , 2008, 16(4): 552-557.

PENG Zhengbiao, YUAN Zhulin, LIANG Kunfeng, CAI Jie. Ice Slurry Formation in a Cocurrent Liquid-Liquid Flow[J]. , 2008, 16(4): 552-557.

参考文献

1 Wang, R.Z., Li, Y., “Perspectives for natural working fluids in China”, Int. J. Refrigeration, 30, 568-581 (2007).
2 Lorentzen, G., “The use of natural refrigerants: A complete solution to the CFC/HCFC predicament”, Int. J. Refrig., 18, 190-197 (1995).
3 Pronk, P., “Fluidized bed heat exchangers to prevent fouling in ice slurry systems and industrial crystallizers”, Ph.D. Thesis, Delft Univ. of Tech., Delft (2006).
4 Sari, A., Kaygusuz, K., “Thermal energy storage characteristics of myristic and stearic acids eutectic mixture for low temperature heating applications”, Chin. J. Chem. Eng., 14 (2), 270-275 (2006).
5 Ashok, S., Banerjee, R., “Optimal cool storage capacity for load management”, Energy, 28, 115-126 (2003).
6 Egolf, P.W., “Ice slurry: A promising technology”, Technical Notes on Refrigerating Technologies, International Institute of Refrigeration/IIF, Paris, France (2004).
7 Egolf, P.W., Kauffeld, M., “From physical properties of ice slurries to industrial ice slurry applications”, Int. J. Refrig., 28, 4-12 (2005).
8 Wang, M.J., Kumusoto, N., “Ice slurry based thermal storage in multifunctional buildings”, Heat Mass Transfer, 37, 597-604 (2001).
9 Patience, D.B., Rawlings, J.B., Mohameed, H.A., “Crystallization of para-xylene in scraped-surface crytallizers”, AIChE J., 47,2441-2451 (2001).
10 Stamatiou, E., Meewisse, J.W., Kawaji, M., “Ice slurry generation involving moving parts”, Int. J. Refrig., 28, 60-72 (2005).
11 Russel, A.B., Cheney, P.E., Wantling, S.D., “Influence of freezing conditions on ice crystallization in ice cream”, J. Food Eng., 39,179-191 (1999).
12 Trommelen, A.M., Beek, W.J., Westelaken, H.C.V.D., “The mechanism of heat transfer in a rotator type scraped-surface heat exchanger”, Chem. Eng. Sci., 26, 1987-2001 (1971).
13 Stamatiou, E., “Experimental study of the ice slurry thermal-hydraulic characteristics in compact plate heat exchangers”, Ph.D. Thesis, Toronto Univ., Canada (2003).
14 Wang, M.J., Goldstein, V., “A novel ice slurry generator system and its applications”, In: Refrigeration Science and Technology Proceedings—Applications for Natural Refrigerants, Aahrus, Denmark,543-551 (1996).
15 Chuard, M., Fortuin, J.P., “COLDECO—A new technology system for production and storage of ice”, In: Proceedings of the First Workshop on Ice Slurries of the International Institute of Refrigeration, Yverdon-les-Bains, Switzerland (1999).
16 Klaren, D.G., Meer, J.S.V.D., “A fluidized bed chiller: A new approach in making slush-ice”, In: Industrial Energy Technology Conference Houston Proceeding, Texas A&M University, USA (1991).
17 Meewisse, J.W., “Fluidized bed ice slurry generator for enhanced secondary cooling systems”, Ph.D. Thesis, Delft Univ. Tech., Delft (2004).
18 Tanino, M., Kozawa, Y., Mito, D., Inada, T., “Development of active control method for super-cooling releasing of water”, In: Proceedings of the Second Workshop on Ice Slurries of the International Institute of Refrigeration, Paris, France (2000).
19 Indada, T., Zhang, X., “Active control of phase change from super-cooled water to ice by ultrasonic vibration (1) Control of freezing temperature”, Int. J. Heat Mass Transsfer, 44, 4523-4531 (2001).
20 Zhang, X., Indada, T., “Active control of phase change from supercooled water to ice by ultrasonic vibration (2) Generation of ice slurries and effect of bubble nuclei”, Int. J. Heat Mass Transfer, 44,4533-4539 (2001).
21 James, C.L., Kam, C.N., “Effect of ice nucleators on snow making and spray freezing”, Ind. Eng. Chem. Res., 29, 361-366 (1990).
22 Kim, B.S., Shina, H.T., Lee, Y.P., Jurng, J., “Study on ice slurry production by water spray”, Int. J. Refrig., 24, 176-184 (2001).
23 Shina, H.T., Lee, Y.P., “Spherical-shaped ice particle production by spraying water in a vacuum chamber”, Appl. Therm. Eng., 20,439-454 (2000).
24 Saito, A., “Recent advances in research on cold thermal energy storage”, Int. J. Refrig., 25, 177-189 (2002).
25 Kitanovski, A., Vuarnoz, D., Ata-Caesar, D., Egolf, P.W., Hansen, T.M., Doetsch, C., “The fluid dynamics of ice slurry”, Int. J. Refrig.,28, 37-50 (2005).
26 Liang, K.F., Peng, Z.B., Yuan, Z.L., Fan, F.X., “Atomization and drop-size distribution of liquid-liquid systems”, J. Chem. Ind. Eng.,58, 1935-1942 (2007). (in Chinese)
27 Richards, J.R., Beris, A.N., Lenhoff, A.M., “Drop formation in liquid-liquid systems before and after jetting”, Phys. Fluid., 7,2617-2630 (1995).
28 Kitron, A., Elperin, T., Tamir, A., “Stochastic modeling of the effects of the liquid droplet collisions in impinging streams absorbers and combustors”, Int. J. Multiphase Flow, 17, 274-282 (1991).
29 Eggers, J., Lister, J.R., “Coalescence of liquid drops”, J. Fluid. Mech., 401, 293-310 (1999).
30 Marion, G., Dicharry, C., Mendibourne, B., “Contributions of the modelization of the surfactant concentration influence on droplet size distribution in oil/water emulsion”, Progr. Collid Polym. Sci.,21, 307-311 (1993).
31 David, P.S., Rutland, C.J., “A new droplet collision algorithm”, J. Com. Phys., 164, 62-80 (2000).
32 Richards, J.R., Lenhoff, A.M., Beris, A.N., “Dynamic breakup of liquid-liquid jets”, Phys. Fluid., 6, 2640-2655 (1994).

Ice Slurry Formation in a Cocurrent Liquid-Liquid Flow

Ice Slurry Formation in a Cocurrent Liquid-Liquid Flow

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价