Phase change materials (PCMs) are promising for thermal energy storage applications, but low thermal conductivity limits their heat exchange rate with a working fluid. The nanofluid approach has been established as a method of thermal conductivity enhancement, but particle addition may have an adverse effect on specific energy storage capacity. Latent heat reduction beyond traditional theory has been observed experimentally for carbon nanotubes dispersed in paraffin wax. Nanofluid latent heat and effective thermal conductivity were analyzed to investigate the effects of particle addition on thermal properties affecting PCM energy storage performance. It is shown that particle diameter significantly impacts nanofluid latent heat, with smaller particles generating greater degrees of reduction, but has a negligible effect on thermal conductivity. A method to approximate nanofluid latent heat of fusion is presented, considering the diameter-dependent reduction observed.
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ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology
July 14–19, 2013
Minneapolis, Minnesota, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-5547-8
PROCEEDINGS PAPER
Investigation of Thermal Properties in Nanofluids for Thermal Energy Storage Applications
Aitor Zabalegui,
Aitor Zabalegui
Santa Clara University, Santa Clara, CA
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Bernadette Tong,
Bernadette Tong
Santa Clara University, Santa Clara, CA
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Hohyun Lee
Hohyun Lee
Santa Clara University, Santa Clara, CA
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Aitor Zabalegui
Santa Clara University, Santa Clara, CA
Bernadette Tong
Santa Clara University, Santa Clara, CA
Hohyun Lee
Santa Clara University, Santa Clara, CA
Paper No:
HT2013-17649, V001T01A041; 6 pages
Published Online:
December 21, 2013
Citation
Zabalegui, A, Tong, B, & Lee, H. "Investigation of Thermal Properties in Nanofluids for Thermal Energy Storage Applications." Proceedings of the ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Theory and Fundamental Research in Heat Transfer. Minneapolis, Minnesota, USA. July 14–19, 2013. V001T01A041. ASME. https://doi.org/10.1115/HT2013-17649
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