affiliation not provided to SSRN
hydrogen proton exchange membrane fuel cell (PEMFC), double-scroll compressor, oil-free, prototype, compression process.
Twin-screw vacuum pump, Variable cross-sectional rotor, Rotor generation method, Performance analysis, Experiment
Multi-stage vacuum pump, Thermodynamic model, Power analysis, Specific power, Indicator diagram
Fuel cell, Claw air compressor, Oil-free, Double-claw rotor, Geometric model, Fluid flow