Turbo Blowers Share the Load ENERGY-EFFICIENT PROCESS AIR-PRODUCTION Thanks to two new Aerzen Turbo Blowers an industrial sewage treatment plant now works with highest energy efficiency in the Netherlands – inspite of the large capacity utilisation bandwidth from 50 up to 100 percent. As soon as the oxygen content drops below a set-point value process air is generated. Turbo blower for the base load The machines made by Aerzener arrange for utmost energy efficiency.Between beginning of August and March the Aerzen customer produces approx. 9.000 tons of potato starch per week. With the production of starch as well as during its further process- ing a lot of waste water accumulates which is immediately prepared in a sewage treatment plant on the company site. In three activated sludge tanks the oxygen content is determined via sensors. In case of falling below the setpoint value, oxygen is fed in and the process air production activated via a pressure sensor „Amortized in less than five years“ For more than 20 years the process air-production has been effected at the customer first of all by Aerzen Positive Displacement Blowers Type GMb 16f13 with a max. power of 5.000 Nm3/h each. As the motors could be driven with two speeds, the conditions standstill, 50 and 100 percent were possible. In the meantime two units have been dismantled and replaced by two Aerzen Positive Displacement Blowers of series Delta Blower. “When we then planned the modernisation of our process air-production, we originally wanted to install two new positive displacement blowers of the already existing type GM 90S. However, at that time, Aerzener Maschinenfabrik has recommended to choose two new AT-urbo Blowers and to connect them with the two existing positive displacement blowers”, explains the production engineer. “The results of the calculations convinced us. The investment has already amortized via the energy costs in less than five years.” Turbo Blowers for base load Now a new AT-Turbo Blower of Type AT 300-0,8 produces the base load with a max. power of 10.000 Nm3 per hour, a smaller Turbo Blower of type AT 150-0,8, the peak load with a max. power of 5.000 Nm3 per hour. In case of further increasing requirement the two older positive displacement blowers are switched in addition. All units are speed-controlled and driven with a constant pressure of 0,6 bar. “Our waste water-introduction quantity fluctuates significantly depending on production and consequently also the processair-requirement. Therefore the installed capacity is fully utilised.“We do not maintain any reserves. In case of emergency an Aerzen rental machine replaces the failed capacity“, assures the production engineer. The described case of application shows that the process-air-requirement of a sewage treatment plant can be produced with highest possible energy efficiency, especially, if it can be realized with different machine types and power by a design concept. They can be defined as ideal base- and peak load units acc. to their constructive properties. Consequently the physical advantages of a flow machine (high energy efficiency in design point) can be ideally combined with the advantages of positive displacement machines (high controllability and good efficiency also in partial load operation).
ISO-Certificate for Aerzen Mexico At the end of December 2012 Aerzen Mexico was certified in accordance with ISO 9001-2008. Sales, after- sales and maintenance of blowers, compressors and gas meters all comply with the quality management standard. The certificate is valid until the end of 2015
New sales engineer for the Asia-Pacific region In November 2012, Axel Wehling became the new sales engineer for the Asia-Pacific region. Hismain responsibility, together with Regional Manager, Chuck Lim, is to expand Aerzen’s business across the region. As a graduate in technical business administration, and from his time working in the capitalgoods industry, Wehling has international experience in projects involving multiphase positive displacement pumps and systems in the oil and gas sector.
Delta Hybrid D 152 in field testing The extension of the series Delta Hybrid range of products is progressing: in the meantime, the development of the next size D 152 has been completed. This machine can be used with negative pressure up to -700 mbar and with positive pressure up to 1,500 mbar at a volume flow of up to 9,000 m3/h.The first machines D 152 S and D 152 H for field testing have already been supplied and commissioned. Field testing will continue until the end of this year. Supply of the first serial machines D 152 S and D 152 H is scheduled for early 2014.
Aerzener Maschinenfabrik is a Trusted Partner In the middle of last year Aerzener Maschinenfabrik gained the so-called AEO- certificate (“Authorised Economic Operator”) and was thus confirmed as a highly trusted trading partner within the European Union.The advantages of gaining this certification include fewer goods controls and accelerated customs procedures. Since 1st July an agreement has come into force between the U.S. and the EU, which simplifies imports and exports considerably. Consequently, the U.S. and the EU will mutually recognise their authorised economic operators - with “C-TPAT” in the U.S. which corresponds with “AEO” in Europe.Companies will benefit from quicker inspections and lower costs in respect of customs clearance.
Water-Injected Compressor Series Expands For generating absolutely oil-free compressed air, Aerzener Maschinenfabrik has developed the new VMW-water stage. New, single stage VMW water stages working up to 13 bar have already been tested successfully under practical conditions and in continuous hard operation. Besides considerably improved efficiency they also offer significantly reduced maintenance expenditure, and are available for the time being for driving capacities of 45 to 110 kilowatts, and for maximum intake volume flows of between 13.4 and 17.2 cubic metres per minute. The new Aerzen VMW-water stages were designed exclusively for directly drive. They work at speeds of 1,500 to 5,000 rotations per minute and can be used in plants with constant speed as well as in demand- controlled plants.
New Aerzen subsidiary in Taiwan On 1st January 2013 Aerzener Maschinenfabrik established a new subsidiary in Taiwan. All orders and financial transactions of Aerzen Asia Singapore - Taiwan Representative Office, so the entity’s official name, are settled through Aerzen Asia Pte. Ltd. in Singapore which is the 100 per cent owner of the new entity. A new country manager is now located in Taipei- he replaces C.C. Lin of Tiphery Corp. who has coordinated business in Taiwan for Aerzener Maschinenfabrik for the past 20 years. With the establishment of this new entity, Aerzen will significantly strengthen its presence in Taiwan.
Improved performance: Delta Hybrid D 98 V The requirements for Aerzen machines increase continually – this is due to the constantly increasing fields of application. Aerzener Maschinenfabrik received an order to design a Delta Hybrid-stage which can be used in negative pressure up to-900 mbar.Aerzen met the challenge and developed the Delta Hybrid D 98 V. In this case the “V“ stands for “Vacuum“. The design has been completed and the first field tests will start shortly. In particular,the stage can be used in both stationary as well as in mobile areas.Another advantage, particularly for vehicle manufacturers, is the weight-performance ratio. In the past, a screw compressor or a blower with pre-inlet could be used for a negative pressure of -900 mbar. With the Delta Hybrid D 98 V a negative pressure up to -900 mbar as well as an overpressure of 1.500 mbar at a volume flow up to 5.400 m3/h can be realized.This means that, Delta Hybrid D 98 V combines the advantages of the blower with preinlet and those of the screw compressor – with a low space requirement.
New Managing Director at Aerzen Switzerland Marcel Strotz will take over the management of Aerzen Switzerland as of 1st April 2013. Strotz, who has been working at Aerzener Maschinenfabrik since December 2012, will replace longtime Managing Director, Vito Jahn, who is retiring after many years of loyal service.
New Managing Director at Aerzen do Brazil Rainer von Siegert has become the new Managing Director of the Brazilian subsidiary, Aerzen do Brazil, as of 1st January 2013.Von Siegert has been working for the Aerzen Group since August 2012,when he assumed the MD role on a temporary basis following a sudden change in management at the Brazilian subsidiary.
Poland voted Delta Hybrid “Product of the Year” The Polish specialist journal “Ulrzymanie Ruchu” (Ger. plant engineering) has voted Aerzen rotary piston compressor Delta Hybrid “Product of the Year 2012” in Poland.In the first phase, a jury of four had assessed all the submitted products. Then, in the second phase, the readers of the print and online edition decided on the awarding of the coveted title. This positive assessment of Delta Hybrid was primarily due to its energy efficiency.On 20th March representatives of Aerzen subsidiary in Poland accepted theaward on the fair AUTOMATICON in Warsaw.
