[1] Yang Liu, Du Kai, Zhang Xiaosong, Niu Xiaofeng, et al. Preparation and stability of zinc ferrite nano-particle suspensionof ammonia-water solution [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 368-371. [doi:10.3969/j.issn.1003-7985.2010.02.050]

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Preparation and stability of zinc ferrite nano-particle suspensionof ammonia-water solution()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

26

Issue:

2010 2

Page:

368-371

Research Field:

Energy and Power Engineering

Publishing date:

2010-06-30

Info

Title:

Preparation and stability of zinc ferrite nano-particle suspensionof ammonia-water solution

Author(s):

Yang Liu¹;  Du Kai¹;  Zhang Xiaosong¹;  Niu Xiaofeng¹;  2

¹School of Energy and Environment, Southeast University, Nanjing 210096, China
²Department of Building Services Engineering, the Hong Kong Polytechnic University, Hong Kong, China

Keywords:

nanofluid;  stability;  surfactant;  ammonia water

PACS:

TB61+1

DOI:

10.3969/j.issn.1003-7985.2010.02.050

Abstract:

In order to apply nano-particles to the ammonia-water absorption refrigeration, the zinc ferrite nano-particles suspension of ammonia-water solution with the mixed surfactants of sodium dodecyl benzene sulfonate(SDBS)and cetyl trimethyl ammonium bromide(CTAB)is prepared.A series of experiments is performed to investigate the stability of the prepared nanofluid with different contents and proportions of surfactants, different durations of ultrasonic wave vibration and different durations of illumination.The optimal dispersion conditions are 1.5% SDBS, 0.015% CTAB(mass fraction), 30 min of ultrasonic vibration and over 72 h of illumination.Finally, based on double electrode layer theory, the influences of the content of the surfactants on the stability of nanofluid are analyzed.The existence of the optimal surfactant content is proved, which is in accordance with the experimental results.

References:

[1] Choi S U S.Enhancing thermal conductivity of fluids with nanoparticles[C]//International Mechanical Engineering Congress and Exposition.San Francisco, CA, USA, 1995:99-103.
[2] Kim Jin-Kyeong, Jung Jun Young, Kang Yong Tae.The effect of nano-particles on the bubble absorption performance in a binary nanofluid [J].Int J Refrigeration, 2006, 29(1): 22-29.
[3] Kang Yong Tae, Lee Jin-Ki, Kim Bum-Chan.Absorption heat transfer enhancement in binary nanofluids [C]//International Congress of Refrigeration 2007.Beijing, 2007: ICR07-B2-371.(in Chinese)
[4] Cheng Bo, Du Kai, Zhang Xiaosong, et al.Influence of stability of carbon black nano-particle suspension of ammonia solution [J].Journal of Chemical Industry and Engineering, 2008, 59(S2):49-52.(in Chinese)
[5] Zhou Lihong, Fang Yun, Lü Shuanshuo.Mixing behaviors and application of anionic-cationic surfactant[J].China Surfactant Detergent & Cosmetics, 2001, 31(5): 37-40.(in Chinese)
[6] Li Fengsheng, Cui Ping, Yang Yi, et al.The treatment technology and application of micrometer-nanometer powders [M].Beijing: National Defense Industrial Press, 2005: 46;185-186.(in Chinese)
[7] Gao Lian, Sun Jing, Liu Yangqiao.The dispersion and surface modification of nanometers powders [M].Beijing: Chemistry Industrial Press, 2003: 232-233.(in Chinese)
[8] Xu Yanli.Function of surfactants [M].Beijing: Chemistry Industrial Press, 2000: 39-40;205-207.(in Chinese)

Memo

Memo:

Biographies: Yang Liu(1984—), male, graduate;Du Kai(corresponding author), male, professor, du-kai@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.50876020).
Citation: Yang Liu, Du Kai, Zhang Xiaosong, et al.Preparation and stability of zinc ferrite nano-particle suspension of ammonia-water solution[J].Journal of Southeast University(English Edition), 2010, 26(2):368-371.

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