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Comparison of refrigerant charge requirements in an optimized fin and tube evaporator versus plate heat exchangers.

Number: 1923

Author(s) : ALLYMEHR E., WILL T., SCHNABEL L., SKAUGEN G.

Summary

Air-to-water heat pump systems with natural refrigerants require a minimum refrigerant charge. Two systems with direct evaporation in a fin-and-tube evaporator and a brazed plate evaporator with an additional brine-to-air heat exchanger will be compared. Experimental data obtained for evaporation of propane (R290) in small sized smooth tube and an internally enhanced tube is used for an optimal design of a fin-and-tube evaporator with a heat output of 5 kW. Two separately developed simulation codes were used to calculate the required refrigerant charge and the efficiency of both systems. The results indicate the feasibility and limitations of a fin-and-tube heat exchanger in a system with direct evaporation in charge reduced air-to-water heat pump systems.

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Pages: 8

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Details

  • Original title: Comparison of refrigerant charge requirements in an optimized fin and tube evaporator versus plate heat exchangers.
  • Record ID : 30028899
  • Languages: English
  • Subject: Technology
  • Source: 6th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
  • Publication date: 2021/09/01
  • DOI: http://dx.doi.org/10.18462/iir.TPTPR.2021.1923
  • Document available for consultation in the library of the IIR headquarters only.

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