Because the moving rotary vanes that compress the gas do not come into direct contact with the housing wall, but move across a hydrodynamic lubricating film, there is absolutely no wear in the compression chamber. In addition, all the moving parts such as the motor, coupling and oil cooling are designed to have an extremely long life.
Furthermore, the bearings can be changed much less often with a rotary vane compressor than with a screw compressor. The service costs are therefore extremely low and there is very little unplanned downtime.
As the customer explained: “Downtime occurs much less often with rotary vane compressors than with the other types of compressors we have installed.” This reliability pays off in a big way, not only for the operators but also for their partners: the farmers that own the biogas generation plant.
Karlheinz Brunner: “Every day that the plant is not running reduces sales for the producers. All those involved are therefore keen to ensure that the running time of the Burgrieden plant is as high as possible. It is in operation 360 days a year, and the two Wittig rotary vane compressors compress over 2 million m3 of bio methane from the region every year, operating almost continuously.”