Technical White Paper: Energy Efficiency Of Twin Screw Blowers Compared To Rotary Lobe Blowers

In order to achieve a significant improvement in energy efficiency in the technology of air blowers for small volume flows (300 to 5,000 m³/h), a technology step is needed.

The technical evolution in this blower market for small volume flows has been very poor in the past 50 years. The “Roots” type lobe blowers have been developed from 2-lobe to 3-lobe blowers, mainly to reduce the pulsation level, but regarding energy efficiency, lobe blowers have not achieved significant improvements.

The step to achieve significant progress in energy efficiency in the low-pressure market is taken by introducing blowers using internal compression instead of external compression.