Share

IIR document

Visualization and two-phase pressure gradient in return bends: experimental results for HFO-1234yf.

Number: pap. ID: 265

Author(s) : PADILLA M., REVELLIN R., HABERSCHILL P., et al.

Summary

Flow regimes of HFO-1234yf and R134a in a horizontal and vertical 6.7 mm inner diameter glass return bend are investigated. The different flow regimes observed are: slug, intermittent and annular flows. In addition, this study presents 312 two-phase pressure drop data points measured for the HFO-1234yf refrigerant in horizontal return bends. Inner diameters (D) span from 7.90 to 10.85 mm and curvature ratios (2R/D) from 3.68 to 4.05. The present experimental data are compared against 4 correlations found in the literature. For the present database, none of these methods is able to satisfactorily predict the return bend pressure drop.

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: Visualization and two-phase pressure gradient in return bends: experimental results for HFO-1234yf.
  • Record ID : 30002386
  • Languages: English
  • Subject: HFCs alternatives
  • 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

Indexing