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Condensation and evaporation heat transfer characteristics of pure and binary-mixture HFO refrigerants inside a plate heat exchanger.

Number: pap. n. 1363

Author(s) : KARIYA K., MIYARA A.

Summary

In the present study, condensation and evaporation local heat transfer coefficients and pressure drop of the pure and binary-mixture HFO refrigerants inside a brazed plate heat exchanger were investigated by using a test section which is combined with two grooved stainless steel plates. In the test section, wall temperature distribution was measured for local heat transfer coefficient.In order to measure local heat transfer and temperature distribution, five thermocouples were set on flow direction for each wall temperature measurement of the refrigerant side and heat source water side. Local heat transfer coefficient were calculated from local wall temperature of refrigerant side, saturation temperature and local heat flux obtained by temperature gradient between heat transfer surface of refrigerant side and heat source side.

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Pages: 8

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Details

  • Original title: Condensation and evaporation heat transfer characteristics of pure and binary-mixture HFO refrigerants inside a plate heat exchanger.
  • Record ID : 30026106
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1363

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