Share

IIR document

Boiling heat transfer of a R32/R1234ze(E) mixture inside a microchannel.

Number: pap. TP-052

Author(s) : AZZOLIN M., BORTOLIN S., DEL COL D.

Summary

The search for alternatives to high GWP refrigerants primarily focuses on the use of natural fluids (hydrocarbons, ammonia, carbon dioxide) and new synthetic refrigerants having low GWP. Unfortunately, single-component low-GWP refrigerants so far cannot cover all the applications unless some drawbacks, such as flammability, are accepted. A solution may be found using blends of refrigerants, to satisfy the demand for a wide range of working conditions. In this paper, the boiling heat transfer performance of a non-azeotropic mixture of R1234ze(E) and R32 (0.26/0.74 by mass) is investigated. This blend exploits the good characteristics of R32 reducing at the same time its GWP value. Local flow boiling heat transfer coefficients have been measured in 1 mm internal diameter microchannel. The heat transfer coefficients of the present mixture are compared against predicting models available in the literature. The new experimental data are also compared to the boiling heat transfer of the pure components R1234ze(E) and R32, to analyze the heat transfer penalization due to the mass transfer resistance.

Available documents

Format PDF

Pages: 8

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: Boiling heat transfer of a R32/R1234ze(E) mixture inside a microchannel.
  • Record ID : 30021460
  • Languages: English
  • Source: 5th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants.
  • Publication date: 2017/04/23
  • DOI: http://dx.doi.org/10.18462/iir.tptpr.2017.0052

Links


See other articles from the proceedings (84)
See the conference proceedings

Indexing