Negative pressures of down to -0.950 bar with further developed AERZEN Rotary Lobe Compressor Delta Hybrid

Negative pressures of down to -0.950 bar with further developed AERZEN Rotary Lobe Compressor Delta Hybrid
(PresseBox) ( Aerzen, )
Thanks to the new rotary lobe compressor series Delta Hybrid, AERZEN implemented very successfully in 2011 a symbiosis between positive displacement blowers and screw compressors in the volume range of 100 to 9000 m³/h. Thanks to this new special machine Delta Hybrid D 98 V, the maximum possible negative pressure is now extended up to -950 mbar.

These are the most important features of the Delta Hybrid series: Increase of energy efficiency up to 20 % and extension of the application fields. The pressure ranges of the positive displacement blowers had been increased from 1000 mbar to 1500 mbar and regarding negative pressure from -500 mbar to -700mbar. Thanks to this new special machine Delta Hybrid size D 98 V the first type of this developed series - AERZEN had decreased this maximally possible negative pressure still further down to –950 mbar and is therefore, close to the vacuum range. This increased performance is possible by a clever cooling air supply via additional pre-inlet channels. At the same time, the new concept is convincing due to its high robustness, since even with closed suction side for a short time, there is no risk of thermal overload! This is an important feature for the rough operation with bulk vehicles! When sucking off bulk material, a temporary clogging of the suction nozzle is usual practice! Intensive development has led to this efficient feature! Various tests, calculations and iterative processes which mainly focussed on the pre-inlet openings for several months, have made today’s design possible.

According to the motto “heavier, faster, more efficient” this new machine type offers clear advantages with its increased negative pressure capabilities: Transport of heavier materials, via longer distances and/or with higher speed. Résumé: In any case, the efficiency of the loading and unloading increases. The new Delta Hybrid may produce

overpressures up to 1500 mbar as well as negative pressures down to -950 mbar and is, therefore, the perfect rotary lobe compressor for a wide range of operations. This compressor is suitable for both mobile and stationary use. It

starts with the loading and unloading of trucks. For the mobile application the machine can be mounted directly on the vehicle and is driven by the truck motor or electrically.

However, it can also be mounted stationary at the place of installation with fixed installed electrical drive and deliver conveyed air with over- and negative pressure for the loading and unloading of vehicles as well as for general pneumatic transport tasks. The packaged unit supplies a maximum volume flow of 5700 m³/h. The D98V will still be delivered with electrical oil demister. High negative pressures generate high temperatures. Therefore, a separate oil tank and oil cooler are applied in addition when certain negative differential pressures are necessary!
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