inlet losses

impeller channel losses

diffuser losses

all of the above

0.10%

0.50%

1%

5%

directly proportional to clearance volume

greatly affected by clearance volume

not affected by clearance volume

inversely proportional to clearance volume

mild steel

stainless steel

carbon steel

high nickel alloy

less power requirement

better mechanical balance

less loss of air due to leakage past the cylinder

lower volumetric efficiency.