Compact Filters for Gas Turbines

in EN 779 filter classes F7, F8 and F9 and ISO 16890 filter classes ISO ePM1, ISO ePM2,5, ISO ePM10

Compact filters owe their name to their compact, space-saving construction. They provide maximum media area within minimum volume, offering an optimum combination of high filtration efficiency and low pressure drop. As a result, compact filters attain long service life even when used with high volume flow rates and high inlet particulate concentrations.

EMW® has a proven track record spanning more than 30 years as a manufacturer and supplier of minipleat compact filters for gas turbine inlet air filtration. Whatever your gas turbine, its operating mode site air conditions and maintenance intervals, we can provide the best air filter for the job at hand.

Characteristics

  • EN 779 filter classes F7, F8 and F9
  • Filter Groups ISO ePM1, ISO ePM2,5, ISO ePM10
    according ISO 16890
  • Water-repellent media in corrosion-proof plastic frame
  • Reliable operation even in highly humid air
  • Rugged pleat-reinforcing mat eliminates need for brittle plastic or expanded metal grids
  • Filter media joined to aerodynamically optimized plastic frame with cast airtight joint
  • Continuous foamed-in-place seal
  • Easy disposal after service life: plastic housing is fully incinerable.
  • Reliable operation at service temperatures up to 80 °C

Application Fields

High Efficiency + Rugged Construction
= Reliable Power Plant Operation

Our GT compact filters offer up to 38 m² media area in a single space-saving filter unit. A cast airtight seam joins the water-repellent media to the aerodynamically optimized plastic frame. A fully synthetic nonwoven fabric mat on the outlet side enhances pleat strength, ensuring secure operation even with pressure drops in excess of 5000 Pa and under other heavy-duty conditions.

Highly Efficient Filter Media

For efficient particulate removal even under heavy-duty operating conditions.

XXL Media Area

Innovative minipleat technology provides maximum filter media area in the smallest of spaces.

Heavy-Duty Strength

EMW® minipleat compact filters for gas turbine applications are equipped with a pleat reinforcing mat on their outlet side. This reinforcement system provides superb toughness and other advantages over conventional metal or plastic reinforcing grids. The result: heavy-duty strength and outstanding dependability even under extreme conditions such as pressure drops greater than 5000 Pa.

Aerodynamically Optimized Frame

EMW® GT compact filters incorporate a specially designed plastic frame which minimizes turbulent air flow in gas turbine inlet air filtration. GT compact filters provide further benefits as well: they are easy to install and fully incinerable for simple disposal after use.

Advanced Design for Superb Airtightness

The filter media is joined to the frame by an airtight full-perimeter joint. The joined module is finished with a continuous foamed-in-place seal applied on the inlet or outlet side as desired.

Technical Data

Filter class

Cassette Type MPK47-20 GT MPK37-23 GT MPK47-31 GT
Filter class F7 F7 F7
Dimensions 592 x 592 x 296 mm 592 x 592 x 400 mm 592 x 592 x 400 mm
Average efficiency [%] 0.4 µm ≥ 80 ≥ 80 ≥ 80
Nominal air flow rate [m³/h] 3400 / 4250 3400 / 4250 3400 / 4250
Initial pressure drop [Pa] 90 / 115 55 / 75 60 / 90
Dust holding capacity ASHRAE [g] at 450 Pa 510 / 389 594 / 506 1096 / 1028
Cassette Type MPK48-20 GT MPK38-23 GT MPK48-31 GT
Filter class F8 F8 F8
Dimensions 592 x 592 x 296 mm 592 x 592 x 400 mm 592 x 592 x 400 mm
Average efficiency [%] 0.4 µm ≥ 90 ≥ 90 ≥ 90
Nominal air flow rate [m³/h] 3400 / 4250 3400 / 4250 3400 / 4250
Initial pressure drop [Pa] 100 / 135 90 / 125 65 / 90
Dust holding capacity ASHRAE [g] at 450 Pa 474 / 356 591 / 495 930 / 771
Cassette Type MPK49-20 GT MPK39-23 GT MPK49-31 GT
Filter class F9 F9 F9
Dimensions 592 x 592 x 296 mm 592 x 592 x 400 mm 592 x 592 x 400 mm
Average efficiency [%] 0.4 µm ≥ 95 ≥ 95 ≥ 95
Nominal air flow rate [m³/h] 3400 / 4250 3400 / 4250 3400 / 4250
Initial pressure drop [Pa] 105 / 155 80 / 115 65 / 100
Dust holding capacity ASHRAE [g] at 450 Pa 411 / 420 685 / 477 1049 / 867
Cassette Type MPK 47-20 GT MPK 37-23 GT MPK 47-31 GT MPK 48-20 GT MPK 38-23 GT MPK 48-31 GT MPK 49-20 GT MPK 39-23 GT MPK 49-31 GT
Dimensions 592 x 592 x 296 mm 592 x 592 x 400 mm 592 x 592 x 400 mm 592 x 592 x 296 mm 592 x 592 x 400 mm 592 x 592 x 400 mm 592 x 592 x 296 mm 592 x 592 x 400 mm 592 x 592 x 400 mm
Designated Filter Group
ISO 16890
ISO ePM1 55% ISO ePM1 50% ISO ePM1 50% ISO ePM1 65% ISO ePM1 65% ISO ePM1 70% ISO ePM1 80% ISO ePM1 85% ISO ePM1 80%
Further Filter Groups
ISO 16890
ISO ePM2,5 65%
ISO ePM10 85%
ISO ePM2,5 60%
ISO ePM10 85%
ISO ePM2,5 60%
ISO ePM10 85%
ISO ePM2,5 75%
ISO ePM10 90%
ISO ePM2,5 70%
ISO ePM10 90%
ISO ePM2,5 75%
ISO ePM10 90%
ISO ePM2,5 85%
ISO ePM10 95%
ISO ePM2,5 90%
ISO ePM10 95%
ISO ePM2,5 85%
ISO ePM10 95%
Nominal air flow rate [m³/h] 3400 / 4250 3400 / 4250 3400 / 4250 3400 / 4250 3400 / 4250 3400 / 4250 3400 / 4250 3400 / 4250 3400 / 4250
Initial pressure drop [Pa] 90 / 115 55 / 75 60 / 90 100 / 135 90 / 125 65 / 90 105 / 155 80 / 115 65 / 100
Dust holding capacity
AC Fine [g] at 300 Pa at 3400 m³/h
674 894 1477 601 818 1427 697 850 1510
Cassette Type MPK 46-20 GT MPK 36-23 GT
Dimensions 592 x 592 x 296 mm 592 x 592 x 400 mm
Designated Filter Group ISO 16890 ISO ePM10 75% ISO ePM10 65%
Nominal air flow rate [m³/h] 3400 3400
Initial pressure drop [Pa] 80 60
Dust holding capacity AC Fine [g] at 300 Pa 943 1215

All data given are based on test results determined according to EN 779 or ISO 16890. The data are average values subject to tolerances due to normal production fluctuations. The figures are only suitable for comparison with those of other products tested according to the same standard. Dust holding capacity according EN 779 is measured till a final pressure drop of 450 Pa, whereas according ISO 16890 the dust holding capacity is measured till 300 Pa. If higher final pressure drop levels are suitable, the dust holding capacity will be accordingly higher.

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