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Study on supercooling degree of water-based graphene oxide nanofluids.

Étude du degré de surfusion de nanofluides d'oxyde de graphène à base d'eau.

Numéro : pap. n. 779

Auteurs : WANG J., LIU Y., JIN X., et al.

Résumé

Water is usually used as phase-change cold storage material. However, it wastes energy because of its large supercooling degree. Nanofluids can be an alternative cold storage material to solve this problem. Water-based graphene oxide nanofluids with concentration of 20mg/(100ml) and 50mg/(100ml) are prepared by one-step method, and their zeta potential are measured by Laser Size and Zeta Potential Analyzer to analyze the stability of nanoparticles suspension. The correlation models of supercooling degree of deionized water and nanofluids with nucleation rate are established. According to the models, the supercooling degrees of deionized water and two nanofluids are obtained. The results show that the supercooling degree of nanofluid is reduced significantly, and compared to deionized water, the supercooling degrees of 20mg/(100ml) and 50mg/(100ml) nanofluids decrease by 74.8% and 90.3%, respectively. It can be concluded that the graphene oxide nanofluid can be a well alternative cold storage material for energy saving.

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Pages : 8

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Détails

  • Titre original : Study on supercooling degree of water-based graphene oxide nanofluids.
  • Identifiant de la fiche : 30025914
  • Langues : Anglais
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.0779

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