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RWE extends Staßfurt gas storage facility
with MAN compressor technology
05.09.2012 + + + MAN Diesel & Turbo wins order to deliver a complete compressor system to extend a gas storage cavern in Staßfurt (Saxony-Anhalt, Germany) from RWE, one of Germany’s largest electricity and gas suppliers.
The hermetically sealed type HOFIM™ unit will increase the capacity of the storage cavern from around 380 million standard cubic metres of natural gas at present to as much as 500 million standard cubic metres. Weighing around 80 tonnes, the unit comprises two multi-stage radial compressors arranged in tandem around a centrally positioned 14-MW high-performance motor driver. The driver was specially developed and manufactured by MAN Diesel & Turbo for use in compressor units with magnetic bearings.
Their tandem arrangement enables the compressors to feed gas into and out of the storage cavern, operating either in parallel or in series. The system achieves its highest output of 350,000 standard cubic metres an hour in parallel, and peak pressure of over 160 bar in series operation. The considerable range in quantity and pressure ratios achieved by the storage facility ensures customers maximum operating flexibility.
Because it is hermetically sealed, the complete compressor unit does not require dry gas seals on the drive shafts. At the same time, the sealing virtually eliminates the possibility of any gas escaping into the atmosphere. Moreover, the rotating shafts are located in magnetic bearings and float freely in the bearing points, without touching the bearing and therefore without friction, eliminating the need for any lubrication throughout the system.
It is primarily these, its productive properties, as well as its high efficiency, that ensure the compressor system to be delivered to RWE in the autumn of 2013 is exceptionally environmental-neutral in operation.
Dr. Uwe Lauber, Managing Director of MAN Diesel & Turbo Schweiz and Head of the Oil & Gas Business Unit, stresses: “This order also confirms our position as a leader in the German gas storage industry and marks the next chapter in the success story of magnetic-bearing compressors ‘made by MAN’.”
Source: MAN Corporate Communications
www.mandieselturbo.com
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