Share

IIR document

Condensation heat transfer and pressure drop of R-410a in flat aluminum multiport tubes.

Number: pap. TP-047

Author(s) : KIM N. H., GO M. G.

Summary

Brazed heat exchangers with aluminum flat multi-port tubes are being used as condensers of residential air-conditioners. In this study, R-410A condensation tests were conducted in four multi-port tubes having a range of hydraulic diameter (0.78 < Dh < 0.95 mm). The test range covered the mass flux from 100 to 400 kg m-2s-1 and the heat flux at 3 kW m-2, which are typical operating conditions of residential air conditioners. Results showed that both the heat transfer coefficient and the pressure drop increased as the hydraulic diameter decreased. The effect of hydraulic diameter on condensation heat transfer was much larger than the predictions of existing correlations for the range of investigation. Comparison of the data with the correlations showed that some correlations reasonably predicted the heat transfer coefficient. However, most of the correlations highly overpredicted the pressure drop data.

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: Condensation heat transfer and pressure drop of R-410a in flat aluminum multiport tubes.
  • Record ID : 30021455
  • 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.2017.0047

Links


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

Indexing