Please wait a minute...
浙江大学学报(工学版)
J4  2009, Vol. 43 Issue (09): 1668-1671    DOI: 10.3785/j.issn.1008-973X.2009.
    
Nucleation characteristics of nano-additives in binary ice thermal storage system
WU Peng, ZHANG Xue-jun, QIU Li-min, ZHANG Xiao-bin
(Institute of Cryogenics and Refrigeration, Zhejiang University, Hangzhou 310027, China)
Download:   PDF(724KB) HTML
Export: BibTeX | EndNote (RIS)      

Abstract  

Adding two different nanoparticles (SiO2 and α-Al2O3) into the pure water and the ethylene glycol solution respectively to obtain the choosing principle of the nucleation nano-additives mixed with the ice making solution of the cold storage system.  Different effects were observed. And the crystallization mechanism was analyzed based on the theory of wettability involved. The experimental and analytical results show that the same additives of different mass fraction have the different nucleation effects; and when the nano-additives mixed with the ethylene glycol solution, the poor wettability between them results in the poor nucleation, the lower temperature of the supercooling rupture, and the larger energy consumption, so the wettability between the additives and the basic fluid plays an important role in crystallization, and the better wettability results in the better nucleation．

CLC:  TB 494  
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Cite this article:

TUN Feng, ZHANG Hua-Jun, QIU Li-Min, et al. Nucleation characteristics of nano-additives in binary ice thermal storage system. J4, 2009, 43(09): 1668-1671.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2009.     OR     http://www.zjujournals.com/eng/Y2009/V43/I09/1668


二元冰蓄冷系统中的纳米添加剂成核特性研究

为了获得蓄冰溶液中纳米成核添加剂的选择标准,选择在纯净水和乙二醇溶液两种不同的基体溶液中添加两类不同的纳米微粒（SiO2和α-Al2O3）进行实验,观察得到了不同的成核效果.以相关润湿机理为基础,对实验结果进行初步分析后表明:不同质量分数的添加剂具有不同的成核效果；当纳米微粒添加到乙二醇溶液中时,由于两者润湿效果较差,从而导致微粒成核效果下降,混合溶液过冷解除温度下降,增加制冰能耗,因此添加剂颗粒与基体溶液的润湿性将严重影响其结冰成核效果,润湿性能越好,成核效果越好．

[1] 张绍志, 陈光明, 王剑锋. 空调蓄冰中水的过冷问题[J]. 流体机械, 2000, 28(11): 57-60.
ZHANG Shao-zhi, CHEN Guang-ming, WANG Jian-feng. The super-cooling of water in ice storage system [J]. Fluid Machinery, 2000, 28(11): 57-60.
[2] 何钦波,童明伟,刘玉东. 低温相变蓄冷纳米流体成核过冷度的实验研究[J]. 制冷学报, 2007, 28(4): 33-36.
HE Qin-bo, TONG Ming-wei, LIU Yu-dong. Experimental study on super-cooling degree of nanofluids for cryogenic cool storage [J].Journal of Refrigeration, 2007, 28(4): 33-36.
[3] 朱步瑶, 赵振国. 界面化学基础[M]. 北京: 化学工业出版社, 2001: 5-10.
[4] 洪啸吟,冯汉保. 涂料化学[M]. 2版. 北京:科学出版社, 2005: 82-88.
[5] 姚连增. 晶体生长基础[M]. 合肥:中国科学技术大学出版社, 1995: 258-309.
[6] 玻璃化学[M]. 福格尔W,谢于深,译. 北京:轻工业出版社, 1988: 317-370.
[7] 严宏志,钟掘,谭建平. O/W乳液对金属表面润湿性的探讨[J]. 合成润滑材料, 1995, 22(1): 4-7.
YAN Hong-zhi, ZHONG Jue, TAN Jian-ping. The discuss of the wettability of O/W solution on the mental surfaces[J]. Synthetic Lubricants, 1995, 22(1): 4-7.
[8] 龙建佑, 朱冬升, 何钦波, 等. 低温相变纳米流体蓄冷特性研究[J]. 暖通空调, 2006, 36(6): 6-9.
LONG Jian-you, ZHU Dong-sheng, HE Qin-bo, et al. Experimental study on characteristics of low-temperature phase change cool storage for nanofluids [J]. HV&AC, 2006, 36(6): 6-9.
[9] 黄继汤,丁彤,田立言. 表面张力对铝材料空蚀的影响[J]. 水利学报, 1997(5): 23-27.
HUANG Ji-tang, DING Tong, TIAN Li-yan. Influence of fluid surface tension on cavitation damage of aluminium specimen[J]. Journal of Hydraulic Engineering, 1997(5): 23-27.
[10] RAYMOND J, DEVRIES A L. Adsorption inhibition as a mechanism of freezing resistance in polar fishes [J]. Proceedings of the National Academy of Sciences USA, 1977, 74(6): 2589-2593.
[11] INDA T, YABE A, GRANDUM S, et al. Control of molecular-level ice crystallization using antifreeze protein and silane coupling agent [J]. Master Sci Eng A, 2000, 292(2): 149-154.
[12] LU S S, INDA T, YABE A, et al. Microscale study of poly(vinyl alcohol) as an effective for inhibiting recrystallization in ice slurries [J]. International Journal of Refrigeration, 2002, 25(5): 563-569.
[13] KNIGHT C A, WIERZBICKI A. Adsorption of biomolecules to ice and their effects upon ice growth. Part 2. a discussion of the basic mechanism of antifreeze phenomena [J].Crystal Growth and Design, 2001, 1(6): 439-446.
[14] CASSIE A B D, BAXTER S. Wettability of porous surfaces [J]. Transactions of the Faraday Society, 1944, 40: 546-551.
[15] NOSONOVSKY M, BHUSHAN B. Hierarchical roughness makes superhydrophobic states stable [J]. Microelectronic Engineering, 2007, 84(3): 382-386.
[16] YIN Y H, FEENEY R F. Antifreeze proteins: structures and mechanisms of function [J]. Chemistry Review, 1996, 96(2): 601-618.
No related articles found!