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Local heat transfer coefficients of hydrocarbon refrigerant condensation inside a Brazed Plate Heat Exchanger (BPHE).

Number: 0112

Author(s) : LONGO G. A., MANCIN S., RIGHETTI G., ZILIO C.

Summary

This paper presents the local heat transfer coefficients of propane and propylene condensation inside a BPHE. A new test section consisting of two corrugated plates instrumented with 36 T-type thermocouples was designed for measuring the local plate surface temperature, the local heat flux and the local heat transfer coefficient in 9 positions along the refrigerant channel. The experimental tests were carried out at a condensation temperature of 30°C, in the refrigerant mass flux range 6 - 17.5 kg m-2s-1 with an inlet vapour quality around 1.00 and an outlet vapour quality ranging from 0.13 to 0.17. A transition point between gravity-dominated and forced convection condensation was found for a refrigerant mass flux around 10 kg m-2s-1. The Nusselt (1916) analysis shows a fair agreement with the data in gravity-dominated condensation, while Longo et al. (2015) model predicts the data in forced convection condensation with a MAPE around 20%.

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Pages: 12 p.

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Details

  • Original title: Local heat transfer coefficients of hydrocarbon refrigerant condensation inside a Brazed Plate Heat Exchanger (BPHE).
  • Record ID : 30031571
  • 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.2023.0112

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