Analyses of ice slurry formation using direct contact heat transfer

被引:41
作者
Hawlader, M. N. A. [1 ]
Wahed, M. A. [1 ]
机构
[1] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore
关键词
Ice slurry; Direct contact heat transfer; Ice layer growth; Mushy layer growth; Droplet diameter; Inlet temperature; PHASE-CHANGE EMULSION; STORAGE CHARACTERISTICS; OIL DROPLETS; FLOW;
D O I
10.1016/j.apenergy.2008.11.003
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
in the present study, ice slurry is produced by direct contact heat transfer between water and a coolant, Fluroinert FC 84. An analytical model has been developed to predict the growth of ice around the injected supercooled coolant droplets, which involves phase change and heat transfer between layers. During the journey of the coolant droplets through the ice generator, detachment of ice layer formed on the droplets occurs. Equations have been development to describe the process of detachment. Experiments were performed to validate the model developed to predict the ice generation. Parametric studies were then carried out on ice growth rate for different variables, such as droplet diameters and initial liquid temperatures. Both droplet diameters and initial liquid temperatures play an important role in the ice formation around the supercooled liquid surface. Ice growth rate increases with the increase of the droplet diameter, while the growth rate decreases with the increase of the initial temperature of the liquid droplet. For an ice slurry system, it is found that the predicted values of ice slurry generation are in good agreement with the experimental findings. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1170 / 1178
页数:9
相关论文
共 25 条
[1]  
Brady T.W., 1994, ASHRAE T S, V100, P1735
[2]   An experimental investigation of nucleation probability of supercooled water inside cylindrical capsules [J].
Chen, SL ;
Wang, PP ;
Lee, TS .
EXPERIMENTAL THERMAL AND FLUID SCIENCE, 1998, 18 (04) :299-306
[3]  
Fulford G., 1997, MODELLING DIFFERENTI
[4]  
GRUMMAN DJ, 1998, ASHRAE J, V1, P29
[5]  
HAWLADER MNA, 2000, ICAST 2000
[6]  
Hill J. M., 1987, One-dimensional Stefan problems: an introduction, V31
[7]   FLOW AND GOLD HEAT-STORAGE CHARACTERISTICS OF PHASE-CHANGE EMULSION IN A COILED DOUBLE-TUBE HEAT-EXCHANGER [J].
INABA, H ;
MORITA, S .
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1995, 117 (02) :440-446
[8]   Fundamental study on latent cold heat storage by means of direct-contact-freezing between oil droplets and cold water solution [J].
Inaba, H ;
Sato, K .
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1996, 118 (03) :799-802
[9]   Cold heat-release characteristics of phase-change emulsion by air-emulsion direct-contact heat exchange method [J].
Inaba, H ;
Morita, SI .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1996, 39 (09) :1797-1803
[10]   Latent cold heat energy storage characteristics by means of direct-contact-freezing between oil droplets and cold water solution [J].
Inaba, H ;
Sato, K .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1997, 40 (13) :3189-3200