  This paper conducted a comprehensive study on the performance of a rotary
compressor over a rotational speed range of 80Hz to 200Hz through experimental
tests and mathematical modeling. A compressor performance test rig was designed
to conduct the performance tests, with fast-response pressure sensors and
displacement sensors capturing the P-V diagram and dynamic motion of the moving
components. Results show that the compressor efficiency degrades at high speeds
due to the dominant loss factors of leakage and discharge power loss.
Supercharging effects become significant at speeds above 160Hz, and its net
effects reduce the compressor efficiency, especially at high speeds. This study
identifies and analyzes the loss factors on the mass flow rate and power
consumption based on experimental data, and hypothesizes possible mechanisms
for each loss factor, which can aid in the design of a high-speed rotary
compressor with higher efficiency.
