IIR document

Flow boiling heat transfer of the refrigerant mixture HFO-1234yf and R32 in a smooth horizontal tube.

Number: pap. ID: 892

Author(s) : LI M., DANG C., HIHARA E.

Summary

In this study, the characteristics of the flow boiling heat transfer of an HFO-1234yf/R32 (80/20 by mass%) refrigerant mixture are experimentally investigated. Experiments were conducted under a wide range of heat fluxes from 6 to 24 kW/m2 and mass fluxes from 100 to 400 kg/m2s in a horizontal stainless steel tube with an inner diameter of 4 mm. The measured heat transfer coefficients of the refrigerants mixture were compared with those in a 2 mm tube and pure HFO-1234yf in a 4 mm tube. Visual observation of the flow regime was also conducted. The results revealed that the heat transfer coefficients of the mixture were 30-50% lower than that of pure HFO-1234yf at different mass fluxes and heat fluxes. The heat flux thus has a larger influence on the heat transfer coefficient of the mixture in the 4 mm tube than that in the 2 mm tube.

Available documents

Format PDF

Pages: 8 p.

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: Flow boiling heat transfer of the refrigerant mixture HFO-1234yf and R32 in a smooth horizontal tube.
  • Record ID : 30001749
  • Languages: English
  • Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Publication date: 2011/08/21

Links


See other articles from the proceedings (569)
See the conference proceedings