NA-05 - Cleaning: Vehicles and Technology

Pumps

Vacuum pump comparison

Table: 
Comparison of different types of vacuum pumps according as per [Jurth1997]
Characteristic
Rotary vane pumps
Liquid ring pumps
Performance
max. 1.540 m³/h
max. 7.000 m³/h
Vacuum to be achieved
max. 62 bis 69%
max. 90 %
Power
at 1.540 m³/h equal to 58 kW
at 1.600 m³/h equal to 60 kW
Wear
high wear factor due to high speed and mechanical contact of the sliding parts
low, no mechanical contact
Lubrication
required; vanes slide along the inner surface of the housing wall; oil storage required
not required; no oil storage required
Space requirements
less space required due to compact construction
large space requirements
Cost
low
high
Weight
low
high
Noise emission
high
low
Noise absorbers
required
not required
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