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.