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IIR document

Refrigerants with low environmental impact for refrigeration systems.

Number: pap. n. 1103

Author(s) : PETERSEN M., POTTKER G., SETHI A., et al.

Summary

This is the 12 slide PowerPoint presentation of Motta's paper which offers several options to significantly reduce the environmental impact in both existing and new commercial refrigeration applications.

As the leading option for retrofitting R404A in existing systems R448A is presented in a supermarket refrigeration system retrofit case study. This field evaluation showed energy savings with R448A of 9-20% depending on the ambient temperature while maintaining the operational requirements. Compressor discharge temperatures remained within manufacturer specifications and no mitigation measures were needed.

For new refrigeration systems a concept design is introduced using hermetic self-contained units to provide refrigeration at low temperature levels with R1234yf and medium temperature levels with the nonflammable blend R515A. The environmental impact of this new concept is compared with other system architectures. The R515A /R1234yf system shows up to 27% lower total emissions and up to 30% higher energy efficiency than a transcritical R744 system.

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Pages: 12

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Details

  • Original title: Refrigerants with low environmental impact for refrigeration systems.
  • Record ID : 30024931
  • Languages: English
  • Source: 1st IIR international conference on the application of HFO refrigerants, Birmingham, September 2-5 2018.
  • Publication date: 2018/09

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