Abstract
Unlike general vertical rotary compressors, horizontal rotary compressors have a low suction head, which often causes problems due to insufficient oil supply. To improve the oil supply it is necessary to observe the internal phenomenon of the compressor and supplement the design. However, due to the characteristics of the hermetic compressor, there is a limit to the improvement using an experiment. In this study, multi-phase flow analysis techniques for evaluating and analyzing oil supply performance were established. Verification of the established analysis technique led to high reliability within 6 % of the error range of predicted performance, and the internal flow pattern also presented a tendency similar to the actual phenomenon. The improved design of the oil supply system suitable for the horizontal compressor was selected, and the cause of the difference in oil supply performance was identified using the established multiphase flow analysis technique.
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Abbreviations
- D :
-
Diameter of the suction pipe
- f :
-
Volume fraction
- g :
-
Gravitational acceleration
- h :
-
Head
- N P :
-
Total number of phases
- P :
-
Pressure
- t :
-
Time
- u :
-
Velocity vector
- V :
-
Flow velocity
- ζ :
-
Loss coefficient
- μ :
-
Viscosity
- ρ :
-
Density of the fluid
- τ :
-
Stress tensor
- φ :
-
Transported quantity
- 2 :
-
Rear point
- C :
-
Contraction point
- n :
-
Phase of working fluid
- m :
-
Mixture
- o :
-
Oil
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Joon-Hyung Kim received his B.S. and M.S. in Mechanical Engineering, Hanyang University, Korea, in 2005 and 2007, respectively. He received his Ph.D. from Hanyang University in 2015. Currently he is a researcher at Samsung Electronics. His research interests include designs of hermetic compressors, CFD, optimization techniques and experimental tests.
Mun-seong Kwon received his B.S. in Mechanical Engineering from Inha University in 2009, his M.S. from Yonsei University in 2019. He is currently a researcher at Samsung Electronics. His research interests include compressors, calorimeter test, flow visualization.
Jae-Woo Park received his B.S. in Mechanical Engineering from Pusan National University in 2003, his M.S. from Korea University in 2013. Currently, he is a researcher at Samsung Electronics. His research interests include compressors, numerical analysis, flow control.
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Kim, Jh., Kwon, Ms. & Park, Jw. Oil supply system for horizontal rotary compressor. J Mech Sci Technol 37, 4741–4747 (2023). https://doi.org/10.1007/s12206-023-0828-4
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DOI: https://doi.org/10.1007/s12206-023-0828-4