A novel rotating piston-type compressor is presented. The conventional rolling piston
architecture was redesigned to
allow oil-free operation. The spring activated vane was replaced by a directly driven
swinging vane to provide constant
contact to the rotating piston. The model of the compressor was implemented in the
AMESim simulation platform.
Experiments were conducted on prototypes and the data were evaluated based on the
simulation results. Directly
unobservable geometric dimensions were estimated by adjusting the mathematical model
parameters to the measured
thermodynamic state variables with the use of a multi-parametric genetic algorithm.
The simple genetic algorithm proved
fast and adequate solutions. According to the collected results, the oil-free rotating
piston architecture is significantly
more sensitive to the sealing clearances compared to the conventional oil lubricated
rolling piston compressors.
Therefore, the theoretically estimated performance can only be achieved with extremely
small manufacturing tolerances,
which has to be maintained during the operation.