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Numerical modelling of the solid- and fluid dynamic phenomena controlling the ring plate valve motion and tumbling.

Number: 1196

Author(s) : ERVIK A., SAAI A., BERSTAD T., MEYER O., TSUJI T., OKU T., HATTORI K., NEKSÅ P.

Summary

The reciprocating compressor is a vital component in refrigeration systems, and the compressor valves are key for the compressor performance. In the present work, we have developed and employed a coupled simulation strategy using computational fluid dynamics (CFD) and finite element modeling (FEM) to account for the physical phenomena that control the ring plate valve dynamics. The discharge valve of an ammonia compressor is considered, and the detailed geometry is included. We study the different variations in the
compressor configuration that can cause unsteady valve motion with rotation and tumbling of the ring. It is found that both pressure inhomogeneity in the discharge chamber as well as spring non-uniformity can initiate the valve rotation. The gas flow during rotation has the possibility to amplify the rotation and increase the impact speed of the ring plate edge. We discuss the consequences of this for the efficiency and reliability of the system.

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Pages: 12 p.

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Details

  • Original title: Numerical modelling of the solid- and fluid dynamic phenomena controlling the ring plate valve motion and tumbling.
  • Record ID : 30032710
  • Languages: English
  • Subject: Technology
  • Source: 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
  • Publication date: 2024/08
  • DOI: http://dx.doi.org/10.18462/iir.gl2024.1196

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