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Experimental Investigation on Nucleation Supercooling Degree of TiO2–H2O Nanofluids for Cool Storage

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Abstract:

This paper presents a study on the impact of the nucleation supercooling degree of nanofluids. Three different mass fraction TiO2-H2O nanofluids with 20nm TiO2 were prepared by supersonic oscillator through appending hydrophilic dispersant into deionized water. TiO2-H2O nanofluids and deionized water were tested by the experiments of freezing synchronous. The experimental results show that nanofluids have remarkably lower supercooling degree than deionized water, and the time of beginning nucleation is ahead of deionized water, also the total freezing time is lower than that of deionized water. And the influences of different cooling temperature to the supercooling degree were observed, with the cooling temperature increasing, the supercooling degree reduced.

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Periodical:

Advanced Materials Research (Volumes 550-553)

Pages:

2723-2727

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.550-553.2723

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Online since:

July 2012

Authors:

Qin Bo He, Shequan Zeng, Shaoyou Yin, Shuang Feng Wang

Keywords:

Cool Storage, Nanofluid, Phase Change Materials (PCM), Supercooling Degree, TiO2

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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