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AAF International

AAF’s primary focus is on gas turbine air intake, exhaust, ventilation and acoustic systems for the offshore industry.

Revision Date:  3/9/2020

Tags:  211111 - Crude Petroleum and Natural Gas Extraction 原油和天然气开采, AAF International, Air Filtration Systems, Bag Filter, Gas Turbine, Offshore, Solutions, Emissions Reduction, Operational Efficiency, Filtration, Global

Bar Silencer analysis by by AAF and Brunel University

Dissipative silencers used to attenuate noise emanating from air moving devices such as fans are normally of a simple splitter design, with parallel baffles of absorbent material arranged over the width of a duct. However in more specialist applications, such as the exhaust systems of gas turbines, different silencer geometries are often used. One such geometry is a so-called bar silencer, in which rectangular bars, or bricks, of absorbing material are placed in a lattice arrangement over the duct cross section. The acoustic performance of these bar silencers is investigated here using a finite element based numerical mode matching scheme. The insertion loss of the bar silencers is then calculated and compared against traditional splitter designs in order to investigate the relative efficiency of each design the performance of the bar silencer is observed to be very dependent on the material chosen and the flow resistivity of this material (which is linked to the overall bulk density of the material placed in the silencer). This places a strong emphasis on the development of accurate design tools suitable for optimizing silencer performance for a particular application.

Revision Date:  8/9/2016

Tags:  AAF International, Silencer

HEPA Filter Advantages Cited in Turbomachinery Article

James Ross of AAF says HEPA filter systems are lasting 80,000 hours. He recommends single stage reverse jet filters for pre filters. Mitsubishi has used HEPA filters for many years and they are widle used on Japanese gas turbines. Steve Medvetz of Gore says the High efficiency filter can eliminate water washing.

Revision Date:  4/2/2014

Tags:  221112 - Fossil Fuel 化石燃料, AAF International, W. L. Gore, Air Filter, HEPA Filter, Air Filtration, Air Intake, Turbomachinery International

AAF International Company Profile in the Combined Cycle Journal, October 1, 2013

For over 90 years, AAF has been a leader in the field of air filtration, through the most demanding conditions and the toughest environmental challenges. The filtration, noise abatement and other turbine products we make are effective, durable and crucial to greater efficiency and performance in a wide range of industries.

Revision Date:  10/22/2013

Tags:  221112 - Fossil Fuel 化石燃料, AAF International, Air Filter, Noise, Air Filtration, Air Intake, Combined Cycle Journal