Multi-Response Optimization applied to a Mechanically Assisted Reed Valve of a Hermetic Reciprocating Compressor

Andreas Egger*, Raimund Almbauer, Lukas Dür, Johann Hopfgartner, Michael Lang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Reed valves are widely used in hermetic reciprocating compressors for domestic refrigeration. They are crucial components in terms of efficiency, cooling performance and reliability of the compressor. While reed valves already cause a significant proportion of the thermodynamic losses in fixed speed compressors, they cause even more challenges in variable speed compressors. Especially in variable speed compressors, a further improvement of the reed valve dynamics requires the consideration of a new valve concept. In this work, a new and cost-effective concept of a mechanically assisted suction reed valve is introduced. Simulation based response modelling and a multi-response optimization approach are applied to systematically optimize the design. Simulations between 1500 rpm and 5000 rpm indicate the strengths and weaknesses of individual optimized design variants over a wide compressor speed range. Calorimeter and valve dynamics measurements show considerable improvements of the COP and the valve impact velocity.
Translated title of the contributionOptimisation multiréponse appliquée à la soupape à lamelles multiples assistée mécaniquement d'un compresseur à piston hermétique
Original languageEnglish
Pages (from-to)119-130
Number of pages12
JournalInternational Journal of Refrigeration
Publication statusPublished - Nov 2020


  • Domestic refrigeration
  • Hermetic reciprocating compressor
  • Multi-response optimization
  • Reed valve
  • Variable speed compressor

ASJC Scopus subject areas

  • Mechanical Engineering
  • Building and Construction

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