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Development of the correlation condensation heat transfer for nonazeotropic refrigerant mixtures inside 4mm OD small-diameter microfin tubes.

Number: 0418

Author(s) : HIROSE M., JIGE D., INOUE N.

Summary

In the field of refrigeration and air-conditioning, several refrigerant mixtures have been developed in attempts to achieve high performance. Most of these refrigerant mixtures are non-azeotropic. This study proposes a new heat transfer correlation for refrigerant mixtures at condensation based on the obtained experimental results. Four circulation compositions R32/R152a and two circulation compositions R32/R1234ze(E) inside microfin tubes with an outside diameter of 4 mm at an average saturation temperature of 35 °C are used for the experiment. The proposed correlation is for pure refrigerant, corrected by Silver and Bell & Ghaly method and a coefficient F. The coefficient F represents the effects of mass, velocity, and quality. The predicted values of the proposed correlation agree approximately between +30 % and –30 % with the experimental results.

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Pages: 10 p.

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Details

  • Original title: Development of the correlation condensation heat transfer for nonazeotropic refrigerant mixtures inside 4mm OD small-diameter microfin tubes.
  • Record ID : 30031607
  • Languages: English
  • Subject: Technology
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0418

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