Share

IIR document

Investigation on a R32 rotary compressor with vapor injection by supplementary valve based on FSI simulation.

Author(s) : ZENG W., PAN X., CHEN J., XIE J.

Type of article: IJR article

Summary

Rotary compressors with vapor injection are widely used in heat pump systems at low temperature. The valve motion is critical to the performance and reliability of rotary compressors. Injection pressure and supplementary valve lift are important factors directly affecting valve motion. Based on a compressor prototype, this paper presents a fluid–structure interaction (FSI) model to simulate the working process of the compressor and the motion of two valves. The fracture location of the discharge valve plate (DVP) highly matches the stress con centration region in the FSI simulation results, confirming its accuracy. The simulation results show that without injection at low evaporation temperatures, the DVP exhibits insufficient movement with almost no fully-opening period. When vapor injection is enabled, an increase in injection pressure accelerates the pressure rise in the compression chamber, enhances the supplementary mass flow rate by approximately 30 %, and nearly doubles the fully-opening period of DVP, thereby facilitating a smoother discharge process. Increasing supplementary valve lift has limited impact on the DVP motion, with its primary effect being an increase in the supplementary f low rate by about 5 %. The supplementary valve velocity is equivalent to that of the DVP, and the valve plate has a larger rebound.

Available documents

Format PDF

Pages: 13 p.

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Investigation on a R32 rotary compressor with vapor injection by supplementary valve based on FSI simulation.
  • Record ID : 30034489
  • Languages: English
  • Subject: Technology
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 181
  • Publication date: 2026/01
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2025.10.024

Links


See other articles in this issue (33)
See the source

Indexing