The guided rotor compressor (GRC) is a positive displacement rotary gas compressor. The compression volume is defined by the trochoidally rotating rotor mounted on an eccentric drive shaft[1][2] with a typical 80 to 85% adiabatic efficiency.[3]
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The development of the GRC started in 1990 to minimize the use of compressor valve plates and springs by using simple inlet/discharge ports.[4]
The guided rotor compressor is under research as a hydrogen compressor for hydrogen stations and hydrogen pipeline transport.[5]