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Superheated vapour condensation of R410A: a design procedure.

Number: pap. ID: 563

Author(s) : MANCIN S., DEL COL D., ROSSETTO L.

Summary

The direct condensation of superheated vapour on a cold wall appears to be an open research issue since several authors suggest different interpretations of its basic physics. In this paper, the experimental heat transfer measurements carried out during condensation of R410A superheated vapour inside a brazed plate heat exchanger prototype are presented and compared with step-by-step simulations of the two-phase heat transfer process. The prototype consists of four plates with three channels: two arefed with water while the refrigerant flows in the center one. The symmetrical configuration of the channels permits to study the condensation heat transfer both experimentally and analytically. The experimental measurements were carried out by varying the specific mass flow rate between 15 and 40 kg/m2.s and the outlet vapour quality between 0.05 and 0.40. The experimental data were collected at saturation temperature correspondent to the dew point of 36.5°C and imposing a constant inlet superheating of around 17 K. The results of the experimental campaign have been used to validate the thermo-physical model of condensation heat transfer from superheated vapour.

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Pages: 8 p.

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Details

  • Original title: Superheated vapour condensation of R410A: a design procedure.
  • Record ID : 30001989
  • 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

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