THE CENTRIFUGAL COMPRESSOR DESIGN CONSISTS OF THREE ELEMNTS THAT MUST BE MATCHED FOR OPTIMUM EFFICIENCY: IMPELLER, DIFFUSER, AND HOUSING.
THE IMPELLER ROTATES AT VERY HIGH SPEEDS. GAS PASSING THROUGH IT IS ACCELERATED TO A HIGH VELOCITY BY CENTRIFUGAL POOP...I MEAN FORCE.
THE DIFFUSER ACTS AS A NOZZLE IN REVERSE TO SLOW DOWN THE GAS WITHOUT TURBULENCE. SLOWING DOWN THE GAS CAUSES IT TO INCREASE IN PRESSURE AND, UNFORTUNATELY, IN TEMPERATURE.
THE HOUSING AROUND THE DIFFUSER IS USED TO COLLECT THIS HIGH-PRESSURE GAS AND DIRECT ITTO WHEREEVER IT IS USED. IN SOME CASES, THE HOUSING ITSELF IS ALSO A DIFFUSER. I HOPE YOU HAVE LEARNED SOMTHING ABOUT TURBOCHARGERS. THIS IS A FRIENDLY REMINDER TO READ MORE BITCH!