Share

IIR document

Local and global heat transfer coefficients of a stabilised ice slurry in laminar and transitional flows.

Author(s) : IONESCU C., HABERSCHILL P., KISS I., et al.

Type of article: Article, IJR article

Summary

The thermal behaviour of a new two-phase secondary refrigerant has been analysed. The "stabilised ice slurry" is a suspension in a low viscosity oil of ultraporous polymeric particles filled with water. In order to determine the convective heat transfer coefficient of this secondary refrigerant with water-ice phase change, an experimental set-up was built. It allows determining the local heat transfer coefficients inside two heat exchangers, having rectangular sections (80 x 8 mm2) of 1 m length, by mean of flux meters located along the working section. The slurry is first cooled and frozen in one of the exchangers, then heated and melted in the other exchanger. The results obtained for laminar or transitional flows shows that the heat transfer coefficients of the ice slurry are obviously higher than the heat transfer coefficients obtained with the single-phase fluid (oil). Correlations giving the local and global Nusselt numbers, depending on the Graetz or Reynolds numbers and on the particle mass fraction, have been established.

Available documents

Format PDF

Pages: 970-977

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Local and global heat transfer coefficients of a stabilised ice slurry in laminar and transitional flows.
  • Record ID : 2007-2634
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 6
  • Publication date: 2007/09

Links


See other articles in this issue (16)
See the source

Indexing