[1] Li Xiuwei, Zhang Xiaosong,. Liquid dehumidification-assisted evaporative supercooling methodfor ice slurry production [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 351-354. [doi:10.3969/j.issn.1003-7985.2010.02.046]
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Liquid dehumidification-assisted evaporative supercooling methodfor ice slurry production(
)
溶液除湿辅助的蒸发过冷式流态冰制取方法
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 26
- Issue:
- 2010 2
- Page:
- 351-354
- Research Field:
- Chemistry and Chemical Engineering
- Publishing date:
- 2010-06-30
Info
- Title:
- Liquid dehumidification-assisted evaporative supercooling methodfor ice slurry production
- 溶液除湿辅助的蒸发过冷式流态冰制取方法
- Author(s):
- Li Xiuwei, Zhang Xiaosong
- School of Energy and Environment, Southeast University, Nanjing 210096, China
- Keywords:
- ice slurry; liquid dehumidification; evaporation
- PACS:
- TQ025.3
- DOI:
- 10.3969/j.issn.1003-7985.2010.02.046
- Abstract:
- Due to the fact that the conventional ice slurry production system using supercooled water suffers from ice block and depends heavily on electric power, a novel ice slurry production system is proposed. The new system consists of two major parts: the evaporative supercooling process and the liquid dehumidification process.The classical diffusion-control equation is improved by introducing an impact factor into the simulation analysis in the evaporative supercooling process.Meanwhile, experiments are carried out by adopting the particle analyzer to detect the radii and the velocities of the droplets, and an infrared camera to examine the temperature profile of the physical process.It is found that the theoretical conclusion agrees well with the experimental results.Compared with the conventional system, the new system can alleviate the burden on electric power and raise efficiency.These improvements are essentially attributed to the reutilization of the inner waste heat generated from the system itself.
- 针对目前过冷水制取流态冰的方法常会碰到冰堵并且极度依赖电能的问题, 提出了一种新的流态冰制取方法.新方法主要包括2个部分:蒸发式过冷过程和溶液除湿过程.对蒸发式过冷过程进行了理论研究, 通过影响因子的引入改进了经典的扩散-控制模型;同时, 对蒸发式过冷过程进行了实验研究, 用粒子分析仪测量水滴的粒径与速度, 用红外热像仪测量蒸发过冷过程的温度场.研究结果表明:改进的理论模型所得出的结果与实验结果吻合得很好.另外, 通过与传统过冷水制取流态冰方法的比较发现, 新方法可以回收利用自身排出的废热, 降低了对电能的依赖, 提高了制流态冰的效率, 从而使系统的整体性能得到改善.
References:
[1] Lasvignottes J C, David T, Bédécarrats J P, et al.Dynamic modelling and experimental study of an ice generator heat exchanger using supercooled water [J].Energy Conversion and Management, 2006, 47(20): 3644-3651.
[2] Kozawa Y, Aizawa N, Tanino M.Study on ice storing characteristics in dynamic-type ice storage system by using supercooled water: effects of the supplying conditions of ice slurry at deployment to district heating and cooling system [J].Int J Refrigeration, 2005, 28(1): 73-82.
[3] Satoh I, Fushinobu K, Hashimoto Y.Freezing of a water droplet due to evaporation-heat transfer dominating the evaporation-freezing phenomena and the effect of boiling on freezing characteristics [J].Int J Refrigeration, 2002, 25(2):226-234.
[4] Cerci Y.A new ideal evaporative freezing cycle [J].Int J Heat and Mass Transfer, 2003, 46(16): 2967-2974.
[5] Shin H T, Lee Y P, Jurng J.Spherical-shaped ice particle production by spraying water in a vacuum chamber [J].Applied Thermal Engineering, 2000, 28(5): 439-454.
[6] Kim B S, Shin H P, Lee Y P, et al.Study on ice slurry production by water spray [J].Int J Refrigeration, 2001, 24(2): 176-184.
[7] Li X W, Zhang X S, Wang G, et al.Research on ratio selection of a mixed liquid desiccant: mixed LiCl-CaCl2 solution [J].Solar Energy, 2008, 82(12): 1161-1171.
[8] Strub M, Jabbour O, Stub F, et al.Experimental study and modeling of the crystallization of a water droplet [J].Int J Refrigeration, 2003, 26(7): 59-68.
Memo
- Memo:
-
Biographies: Li Xiuwei(1980—), male, doctor; Zhang Xiaosong(corresponding author), male, doctor, professor, rachpe@seu.edu.cn.
Citation: Li Xiuwei, Zhang Xiaosong.Liquid dehumidification-assisted evaporative supercooling method for ice slurry production[J].Journal of Southeast University(English Edition), 2010, 26(2):351-354.