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Preparation and performance of form-stable TBAB hydrate/SiO2 composite PCM for cold energy storage.

Author(s) : ZOU T., FU W., LIANG X., et al.

Type of article: Article, IJR article

Summary

Combining cold energy storage using phase change materials (PCMs) with cooling system used in air conditioner can make notable improvement in energy conservation. In this research, 40% tetra-n-butyl ammonium bromide (TBAB) solution as cold energy medium was preferred due to its appropriate phase change temperature (11.81°C) and high latent heat (211.9?J g-1). Additionally, Na2HPO4·12H2O as nucleating agent could minimize its supercooling degree, with the enhanced crystallization behavior confirmed by optical microscope. A form-stable TBAB hydrate/fumed silica (SiO2) composite PCM was prepared and characterized. The results indicated that the composite PCM containing 30% SiO2 possessed large latent heat (134.0?J g-1), low supercooling degree (2.01°C) and excellent form-stable performance without any liquid leakage above melting temperature (8.33°C). Besides, the composite PCM exhibited an outstanding chemical compatibility, thermal reliability and thermal insulation performance. Considering its desirable properties, TBAB hydrate/SiO2 composite PCM has great potential for cold energy storage.

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Pages: 117-124

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Details

  • Original title: Preparation and performance of form-stable TBAB hydrate/SiO2 composite PCM for cold energy storage.
  • Record ID : 30025739
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 101
  • Publication date: 2019/05
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2019.02.020

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