Refrigerant-Oil Flow at the Compressor Discharge

2016-01-0247

04/05/2016

Event
SAE 2016 World Congress and Exhibition
Authors Abstract
Content
Automotive air conditioning compressor produces an annular-mist flow consisting of gas-phase refrigerant flow with oil film and oil droplets. This paper reports a method to calculate the oil retention and oil circulation ratio based on oil film thickness, wave speed, oil droplet size, oil droplet speed, and mass flow rate. Oil flow parameters are measured by high-speed camera capture and video processing in a non-invasive way. The estimated oil retention and oil circulation ratio results are compared quantitatively with the measurements from system experiments under different compressor outlet gas superficial velocity. The agreement between video result and sampling measurement shows that this method can be applied in other annular-mist flow analysis. It is also shown that most of the oil exists in film from the mass point of view while oil droplets contributes more to the oil mass flow rate because they travel in a much higher speed.
Meta TagsDetails
DOI
https://doi.org/10.4271/2016-01-0247
Pages
7
Citation
Xu, J., and Hrnjak, P., "Refrigerant-Oil Flow at the Compressor Discharge," SAE Technical Paper 2016-01-0247, 2016, https://doi.org/10.4271/2016-01-0247.
Additional Details
Publisher
Published
Apr 5, 2016
Product Code
2016-01-0247
Content Type
Technical Paper
Language
English