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IIR document

Monitoring energy efficiency of refrigerating systems under real operating conditions – methods and recommendations.

Number: pap. n. 1221

Author(s) : HUDJETZ S., KOHLER P., BECKER M.

Summary

A multitude of different figures exist that can be used to assess energy efficiency in refrigerating systems. However, most of these figures are only applicable to standardized test conditions. German specification VDMA 24247-7 offers an efficiency metrics aimed specifically at the evaluation of energy efficiency of refrigerating systems under real operating conditions. So far, experience with this metrics mainly stems from investigations on a laboratory scale. Little has been published on its applicability to more complex real-world refrigerating systems. Therefore, several field sites have been prepared for closer investigation. The field sites are introduced in a compact form. Preliminary results are shown. Results obtained so far lead to the conclusion that an assessment of energy efficiency of more complex systems only based on the whole system alone might not be enough. For an improved metrics, these user experiences are fed to the committee revising the VDMA specification.

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Pages: 8

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Details

  • Original title: Monitoring energy efficiency of refrigerating systems under real operating conditions – methods and recommendations.
  • Record ID : 30026737
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1221
  • Notes:

    Keynote


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