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IIR document

Efficiency of refrigeration plants operation taking into account ambient temperature change.

Number: 0376

Author(s) : SHISHOV V., TALYZIN M.

Summary

An entropic and statistical method of analysis allows calculating losses in different refrigeration plant components, comparing operational efficiency of different refrigeration systems.
This method of analysis was applied in order to investigate refrigeration systems with two working temperature levels (evaporation temperatures minus 35°C and minus 10°C) for retail application, taking into account ambient temperature change. A description of the calculation method was given.
A comparison of efficiency refrigeration systems using R404A as a refrigerant with a system working on a transcritical CO2 cycle was made.
The degree of thermodynamic efficiency was calculated.
A schematic diagram, schedules of losses, COP, and the degree of thermodynamic efficiency depending on ambient temperature are given.
This result could not be achieved with a traditional refrigeration system comparison method using a coefficient of performance (COP) or seasonal efficiency as the only efficiency criterion.

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Pages: 376

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Details

  • Original title: Efficiency of refrigeration plants operation taking into account ambient temperature change.
  • Record ID : 30028236
  • Languages: English
  • Subject: Technology
  • Source: 10th IIR Conference on Compressors and Refrigerants.
  • Publication date: 2021/01/13
  • DOI: http://dx.doi.org/10.18462/iir.compr.2021.0376

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