Spider-Web. designed to exceed. Gas Turbine Systems

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1 designed to exceed your expectations Gas Turbine Systems

2 Proprietary Technology That Performs Proprietary technology delivers high filtration efficiency at low inlet restriction throughout the life of the filter resulting in lower operating costs than other Gas Turbine inlet filters. Premium media substrates are enhanced with Donaldson s Spider-Web nano-fiber layer. This dense layer of resilient uniform submicron fibers captures dust particles on the surface of the filter media. Spider-Web media is ideal for self-cleaning as particles captured on the surface are very effectively released during a pulse cleaning cycle. Superior operational filtration efficiency results. Surface loading technology enables effective selfcleaning performance. Low restriction and high filtration efficiency results in maximum power output. Filtration efficiencies to meet specific application needs are available. Spider-web Technology 1 Micron Particulate At 600X Cellulose Blended Spunbond Meltblown 1 micron = 1/25,400 of an inch 1 Donaldson Torit

3 Three Decades of Superior Turbine Protection For more than three decades, Donaldson has advanced our technology to provide a complete line of filters that have delivered more effective protection and life than commodity filters. Commodity filters allow significantly more contaminants to penetrate the filter media and increase in restriction much more rapidly than Spider-Web. Spider-Web high efficiency filters provide superior gas turbine protection, lower operating restriction and longer filter life. Clean commodity Filter Clean spider-web Filter Loaded commodity Filter Loaded Spider-Web Filter Dirty turbine blade Clean turbine blade donaldson.com

4 Engineered for Power As dust loads on the surface of the, the filtration efficiency increases rapidly while the restriction rises slowly. Most filters on the market today perform less effectively as their efficiency rises slowly and restriction rises rapidly. Donaldson offers a full line of Spider-Web filters to meet your specific filtration needs. Higher Efficiency + Lower P = more power 20 Cartridge Filter MERV 3-10 µm 1-3 µm µm Membrane Efficiency (MERV) XP Duratek Duratek (blended) Duratek XP2 Membrane *MERV 13 & 14 efficiency has been certified by independent lab tests and tested per the ASHRAE 52.2, the most current industry accepted test method used to evaluate filter performance. Filtration efficiency rating have been certified by independent lab tests per industry accepted testing standards such as ASHRAE 52.2, EN779 and EN * Duratek (blended) * * Blended and straight synthetic media are not highly efficient on submicron dust particulate. Spider-Web efficiently captures submicron dust particulate.

5 Why Low P is Important Generally accepted industry guidelines suggest that for each 4 wg of inlet restriction, a power plant can experience a loss in turbine output power of somewhere between 1% and 1.4%. Based on this guideline, if a base load system (running at about 8000 hours per year) experiences an incremental pressure drop of 1 wg, that pressure drop would translate into a loss of output of 0.25%. Donaldson s technology saves you money by maintaining lower inlet restriction throughout the life of the filter. Lower P increases power output Commodity Element Nanofiber Media Number of Element Pairs Turbine Airflow (ACFM) 772, ,000 Average stabilized P over 2 year period Hours of operation 16,000 16,000 Power Output 175 MW 175 MW MW-Hrs 2,800,000 2,800,000 MW-Hrs Lost due to P increase 14,000 7,000 Spider-Web Savings N/A $350,000 Assumes turbine output at ISO conditions, example is a base load system operating at 8,000 $50/ MW-Hr. with an initial P of 1.0. donaldson.com

6 Spider-Web filters are also available for the following inlet systems: AAF Braden Camfil VAW GE/GTIS/Altair Pneumafil + Many others Donaldson Company, Inc. Gas Turbine Systems P.O. Box 1299 Minneapolis, MN U.S.A. Tel Fax filterinfo@donaldson.com donaldson.com > Gas Turbine Filtration Ltd, 303B Dean Road, Avonmouth, Bristol, BS11 8AT. Spider-Web Brochure (01/13) 2010 Donaldson Company, Inc. All Rights Reserved. Information in this document is subject to change without notice. Spider-Web is a registered trademark of Donaldson Company, Inc. Contains Donaldson proprietary technology.