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HFO1234ze(E) boiling inside a brazed plate heat exchanger.

Number: pap. 2166

Author(s) : LONGO G. A., MANCIN S., RIGHETTI G., et al.

Summary

This paper investigates the effects of heat flux, saturation temperature, and outlet conditions on HFO1234ze(E) boiling inside a Brazed Plate Heat Exchanger (BPHE). The heat transfer coefficients show great sensitivity to heat flux and outlet conditions and weak sensitivity to saturation temperature (pressure). The frictional pressure drop shows a linear dependence on the refrigerant kinetic energy per unit volume. The two-phase flow boiling heat transfer coefficients were compared with a new model for refrigerant boiling inside BPHE (Longo et al., 2015): the mean absolute percentage deviation between calculated and experimental data is 7.2%. The present data points were compared with those of HFC134a and HFO1234yf previously measured inside the same BPHE under the same operating conditions: HFO1234ze(E) exhibits heat transfer coefficients very similar to HFC134a and HFO1234yf
and frictional pressure drops slightly higher than HFC134a and HFO1234yf.

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Pages: 10

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Details

  • Original title: HFO1234ze(E) boiling inside a brazed plate heat exchanger.
  • Record ID : 30018936
  • Languages: English
  • Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2016/07/11

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