Comparison of compressor control strategies for energy efficient refrigerated counters: Comparaison des stratégies de régulation des compresseurs pour des comptoirs frigorifiques économes en énergie

Jonas Kjær Jensen*, Martin Ryhl Kærn, Per Henrik Pedersen, Wiebke B. Markussen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Small scale hermetic compressors with built-in frequency converters for compressor speed adjustment are an emerging technology on the commercial market. These compressor technologies offer the ability to impose innovative compressor control strategies, such as variable speed drive or adaptive energy optimization, for small scale commercial refrigeration systems. These strategies may both reduce power consumption and increase the temperature stability of the stored goods. Both of which are a necessity for the refrigerators to abide EU regulations 2015/1095 and 2015/1094 of 5 May 2015 and thus pass the test described in EN 16825. The influence of the applied compressor control strategy was investigated in combination with improvements to the cabinet envelope and improvements to the condenser and evaporator design. The investigation was performed using a validated dynamic model of a refrigerated counter using R290 and R600a, under the EN 16825 test conditions. Both variable speed drive and adaptive energy optimization yield significant reductions in power consumption compared to the conventional On-Off control. A more constant product temperature was achieved by variable speed drive, while the product temperature fluctuated slightly more when applying adaptive energy optimization.

Original languageEnglish
JournalInternational Journal of Refrigeration
Volume126
Pages (from-to)1-11
ISSN0140-7007
DOIs
Publication statusPublished - 2021

Keywords

  • Compressor control
  • Eco-design
  • Hydrocarbon
  • Product temperature
  • Variable speed drive

Fingerprint

Dive into the research topics of 'Comparison of compressor control strategies for energy efficient refrigerated counters: Comparaison des stratégies de régulation des compresseurs pour des comptoirs frigorifiques économes en énergie'. Together they form a unique fingerprint.

Cite this