Oil flow at the scroll compressor discharge: Visualization and CFD simulation

Jiu Xu, Pega Hrnjak

Research output: Contribution to journalConference article


Oil is important to the compressor but has other side effect on the refrigeration system performance. Discharge valves located in the compressor plenum are the gateway for the oil when leaving the compressor and circulate in the system. The space in between: the compressor discharge plenum has the potential to separate the oil mist and reduce the oil circulation ratio (OCR) in the system. In order to provide information for building incorporated separation feature for the oil flow near the compressor discharge, video processing method is used to quantify the oil droplets movement and distribution. Also, CFD discrete phase model gives the numerical approach to study the oil flow inside compressor plenum. Oil droplet size distributions are given by visualization and simulation and the results show a good agreement. The mass balance and spatial distribution are also discussed and compared with experimental results. The verification shows that discrete phase model has the potential to simulate the oil droplet flow inside the compressor.

Original languageEnglish (US)
Article number012051
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
StatePublished - Sep 6 2017
Event10th International Conference on Compressors and Their Systems - London, United Kingdom
Duration: Sep 11 2017Sep 13 2017

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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