Filter Testing. An overview on Topas equipment

Transcription

1 Filter Testing An overview on Topas equipment

2 overview structure characterization of filter media Pore Size Meter PSM 165 filter media testing Manual Filter Media Test Rig MBP 116 Automated Filter Media Test Rig AFC 13x (VDI 3926-II, ISO 11057) filter element testing Standard Air Filters ALF 114 (EN 779, ASHRAE 52.2) HEPA/ULPA Filter Scanner AFS 15x (EN 1822) Cabin Air Filters PAF 11x (DIN 71460, ISO 11155) Motor Air Intake Filters ABP 115 (ISO 5011) Vacuum Cleaners VCT 121 (EN 60312) Oil Mist Separators SPT 140 (ISO 20564)

3 filter structure characterization Pore Size Meter PSM 165 demand on filter material structure information strong correlation between material structure properties and filter performance parameters for quality assurance and product development optimization of product performance starts with optimization of material structure Filtration: filter paper nonwoven materials woven materials (metal, polymer) membranes melt blown films sintered materials (metal, polymer) Hygiene: nonwoven absorber materials for sanitary products Textile: multifilament woven for medical clothing

4 filter structure characterization Pore Size Meter PSM 165 ASTM E , ASTM F reference measurement at the dry sample Measurement at the wet sample: stepwise displacement of the test liquid from the pores Cumulative flow distribution Wetflow Q [/] Dryflow n n 1 1 Wetflow Dryflow n n Density pressure distribution q [1/mbar] ΔQ Δp Density pore size distribution q [1/µm] ΔQ Δd Test liquid has been displaced completely from the sample Wet flow starting at the bubble point

5 filter structure characterization Pore Size Meter PSM 165 transformation of a density pressure distribution to a density pore size distribution capillary model: q [1/mbar] ΔQ Δp discrete pressure intervals q [1/µm] ΔQ Δd discrete pore size intervals ideal pore geometries real pore geometries capillary force: F C Π d σ cosθ p 2 d p 1 pressure force: F P σ cos d 4 p Π 2 d Δp 4 d C σ p no straight pores no circular pores no constant cross section no smooth pore walls d pore diameter (circular pores) s surface tension of the test liquid contact angle p differential pressure d pore diameter (circle equivalent) at the minimal vertical cross section in flow direction 90 (complete wetting test liquid) C empirical capillary constant (ASTM F316)

6 filter structure characterization Pore Size Meter PSM 165 bubble point: largest pore diameter start of the wet flow, sample becomes gas permeable single value (different results at different samples) pore size distribution homogeneous or discrete pore size classes from 0,15 250µm integral distribution parameters median pore size: 50% smaller/larger modal pore size: most frequent pore size standard deviation: homogeneity permeability specific gas flow p Darcy permeability [m²]

7 Messfehler [%] Repeatability [%] filter testing filter structure characterization Pore Size Meter PSM 165 measuring range and accuracy mbar 350 mbar 20 mbar 10 ASTM F 316: 1 0,1 Membrane Filter Paper Nonwoven 0,01 0, Porengröße Size [µm] differential pressure sensors with very high accuracy ( 0,04% FS) at large differential pressure measuring range large measuring error, especially at large pores depending on application customized adjustment of differential pressure range

8 filter structure characterization Pore Size Meter PSM 165 product development and quality assurance of industrial filter paper material structure design: different average pore sizes over a wide range narrow pore size distributions, no overlapping these 6 different materials are suitable for realisation of various specific filtration applications Filter Paper Material Modal Pore Size 1 1,87 5 2,68 2 3,49 6 4,19 4 4,86 3 7,16

9 Median Pore Size [µm] filter testing filter structure characterization Pore Size Meter PSM 165 porosimetric measurements for quality assurance at nonwoven sheet materials accuracy and repeatability of measurements: <3% homogeneity of the sample material: strong fluctuations of local structure properties ,62% 1,95% Nonwoven ,93% 600x600mm² sample 1 sample x 50 =17,2µm x 50 =25,1µm sample 3 sample 4 sample sample 6 sample 7 sample sample 1 sample sample 2 3 sample 4 sample 5 sample 6 sample sample 7 8 Nonwoven PET-material Sample size: 40mm

10 filter structure characterization Pore Size Meter PSM 165 nonwoven filter material homogeneity: strong local fluctuations

11 filter structure characterization Pore Size Meter PSM 165 Pore Size Measurements Filter Efficiency Testing f(x) =??? material structure properties fast, simple, reliable method indirect results on product performance (complex filtration mechanisms) comparative measurements useful tool for product development product performance parameters complex experimental instrumentation time-consuming direct results on product performance essential for final quality assurance preliminary quality assurance Combination of both methods results in reliable and efficient quality assurance and product development

12 filter testing Aerosol Generation Upstream Particle Measurement Downstream Particle Measurement Test Filter Test Air Conditioning Test Filter p Measurement Absolute Filter gravimetrical / fractional efficiency differential pressure dust holding capacity Blower Flow Rate Measurement

13 filter media testing Manual Filter Media Test Rig MBP 116 design and development of filter media quality control at filter media production manually adjusted air flow rate easy to use, simple design, small dimensions, low cost Applications Suitable Filter Media Test Duct Dimensions Flow Rate Generation Dust Disperser Power Supply Determination of differential pressure, gravimetric filtration efficiency and dust loading capacity of various types of filter media planar filter media diameter of filter under test 125mm, thickness of 0 1,5 mm diameter 112 mm, length (upstream) 1000 mm compressed air supply max. 46 5,5 bar two vacuum ejector pumps 0,5 15,5 m³/h, steps =0,5 m³/h, accuracy 5% *) filter face velocity 0,015 0,43 m/s filter surface load m³/(m²h) SAG 410/U for smallest dust output rates and critical test dusts feeding range > 70 mg/h (> 4,5 mg/m³) applicable for ISO A2, ISO A4, VDI 3926 Pural NF, soot VAC 50/60Hz, VDC Dimensions 750 x 500 x 1750 mm (L x W x H) Space Requirement 1000 x 1000 x 2500 mm (L x W x H) Weight Sampling Ports 65 kg Ports available for differential pressure and fractional efficiency measurements

14 filter media testing Manual Filter Media Test Rig MBP inlet filter 2 aerosol 2 upstream measurement 3 5 p test filter 4 downstream measurement 6 absolute filter backup filter 8 throttle 9 pump

15 Differential Pressure [mbar] filter testing filter media testing Manual Filter Media Test Rig MBP 116 gravimetric loading: HEPA filter paper fractional efficiency: standard filter paper 12 HEPA - Filter Paper Filter loading Gravimetric Loading [mg] test dust: air flow rate: particle measurements: switching unit: dilution system: ISO A2 (AC fine) 3m³/h LAP321 (Topas) SYS520 (Topas) DIL55x (Topas)

16 VDI 3926 / ISO filter media testing Automated Filter Media Test Rig AFC 13x design and development of filter media quality control at filter media production fully automated test procedure according to VDI 3926 / ISO Air quality - Test method for filtration characterisation of cleanable filter media differential pressure characteristics dust holding capacity arrestance fractional filter efficiency ) dust generator SAG 410/P 2) atomizer aerosol generator ATM 220 3) test filter 4) absolute filter 5) aerosol spectrometer LAP 321 6) switching unit SYS 520 7) pressure tank 5 6

17 Mass Flow Rate [g/h] filter testing VDI 3926 / ISO filter media testing Automated Filter Media Test Rig AFC 13x dust generator SAG410/P especially suitable for testing with Pural NF or soot adjustable mass flow rate reliable long-term non-stop operation (VDI 3926: total test duration 14h) Dust Generator SAG410/U, Pural NF c V = 2,1% Time [min] Air flow m³/h ±2% Face velocities m/s Diff. pressure Pa ±2% Cross section Sensors Tank pressure Pulse time Aerosol spectrometer Test aerosols Power supply 176 cm² ( 150 mm) Temperature, relative humidity MPa ms LAP 321, Topas µm (<10 5 Particles/cm³) Dusts: ISO A2 (Fine), ISO A4 (Coarse), soot, calcite, Pural,... DEHS, DOP; paraffin, PAO Salt aerosols PSL aerosols V AC, 16 A Size Weight mm approx. 120 kg

18 VDI 3926 / ISO filter media testing Automated Filter Media Test Rig AFC 13x Control and Data Acquisition Software PAFWin hardware visualization

19 flow rate [m³/h] pressure [Pa] filter testing VDI 3926 / ISO filter media testing Automated Filter Media Test Rig AFC 13x Control and Data Acquisition Software PAFWin differential pressure test cleanable filter cyclic pressure pulses time [hh:mm:ss]

20 efficiency [%] filter testing VDI 3926 / ISO filter media testing Automated Filter Media Test Rig AFC 13x Control and Data Acquisition Software PAFWin fractional efficiency aerosol spectrometer LAP 321 switching unit SYS 520 particle size [µm]

21 filter element testing

22 filter element testing general requirements on test conditions:

23 filter element testing Standard Air Filters ALF 114 EN 779, ASHRAE 52.2 testing of particulate air filters for general ventilation according to EN 779, Ashrae 52.2 universal filter holder pocket and cassette filters filter cartridges, flat filters highly automated Air flow rate Differential pressure Test aerosol Loading dust Discharge aerosol Filter samples Compressed air supply Power supply m³/h (at standard conditions) max Pa DEHS, other on request ASHRAE test dust, AC fine, AC coarse DEHS, KCl Pocket and cassette filters with max. dimensions 610 x 610 mm Filter cartridges, max. 400 mm diameter, length of max. 1.5 m Flat media max. surface 1 m² 6 bar 400 V AC, 80 A

24 filter element testing Standard Air Filters ALF 114 EN 779, ASHRAE 52.2 general setup: room requirements

25 filter element testing Standard Air Filters ALF 114 EN 779, ASHRAE 52.2 general setup V ATM EAN SAG 1 aerosol mixing 2 upstream measurement 3 filter under test 4 backup filter, downstream measurement 5 protective filter 6 flow rate generation + measurement

26 filter element testing Standard Air Filters ALF 114 EN 779, ASHRAE 52.2 different types of test filters applicable, easy and quick filter mounting rotatable duct sections, universal filter holding system 1 filter under test backup filter 3 protective filter

27 filter element testing Standard Air Filters ALF 114 EN 779, ASHRAE 52.2 aerosol generation atomizer aerosol generator ATM 230 electrostatic neutralizer EAN 581 ashrae dust generator SAG 440

28 filter element testing Standard Air Filters ALF 114 EN 779, ASHRAE 52.2 Control and Data Acquisition Software PAFWin hardware visualization

29 filter element testing Standard Air Filters ALF 114 EN 779, ASHRAE 52.2 Control and Data Acquisition Software PAFWin differential pressure vs. air flow rate / dust fed

30 filter element testing Standard Air Filters ALF 114 EN 779, ASHRAE 52.2 Control and Data Acquisition Software PAFWin fractional efficiency at different dust loading 2 particle counters 0,2 10 µm

31 filter element testing Standard Air Filters ALF 114 EN 779, ASHRAE 52.2 test results in comparison to an independent and accredited test institute VTT technical research centre of Finland very good correlation EN 779 Filter class Initial differential pressure Fractional efficiency at 0,4 µm VTT Topas ALF 114 VTT Topas ALF 114 F6 98 Pa 102 Pa 21,3 % 23,6 % F7 114 Pa 114 Pa 53,9 % 48,5 % F8 126 Pa 133 Pa 67,5 % 70,3 % F9 156 Pa 157 Pa 85,7 % 81,6 %

32 EN 1822 filter element testing HEPA/ULPA Filter Scanner AFS 15x EN : filter scanning, leak detection, local filter efficiency EN : integral filter efficiency classification of HEPA/ULPA filters retraceable documented 100% filter inspection Filter class efficiency (integral) efficiency (local) H10 > 85 % --- H11 > 95 % --- H12 > 99,5 % --- H13 > 99,95 % > 99,75 % H14 > 99,995 % > 99,975 % U15 > 99,9995 % > 99,9975 % U16 > 99,99995 % > 99,99975 % U17 > 99, % > 99,9999 %

33 EN 1822 filter element testing HEPA/ULPA Filter Scanner AFS 15x universal filter holder AFS 150 most flexible model different customized filter dimensions short and precise adjustment cabinet filter holder AFS 151 adapter plates for each filter dimension limited number of filter dimensions manual scanner AFS 152 add-on equipment to existing leakage test benches retraceable documented 100% filter inspection Filter dimensions 305/1830 x 305/1220 x 50/300 mm Air flow rate m³/h ±1% Filter face velocity Differential Pressure Aerosol Generator Scanning Traverse Sampling Probe Compressed air supply Air Quality Aerosol material Power supply Required Space Required footprint 0.45m/s Pa ±0.5% Wide concentration range atomizer aerosol generator ATM241 3-axis computer controlled, precision stepper motors, positioning precision and reproducibility better than 0.05mm, maximum velocity of 25cm/s, 1 10cm/s as per EN mm Max. 6 bar Room air (20 C, <75 %rh) DEHS, DOP, PAO (Emery 3004), PSL, NaCl, KCl 3x400 VAC, 100 A, 50/60 Hz 10 x 3 x 2.5 m 10 x 3 m

34 filter element testing HEPA/ULPA Filter Scanner AFS 15x EN 1822 fully automated filter scanning AFS 150, AFS 151 manual filter scanning AFS 152

35 filter element testing HEPA/ULPA Filter Scanner AFS 15x EN 1822 Control and Data Acquisition Software AFSWin hardware visualization

36 filter element testing HEPA/ULPA Filter Scanner AFS 15x EN 1822 Control and Data Acquisition Software AFSWin differential pressure test

37 filter element testing HEPA/ULPA Filter Scanner AFS 15x EN 1822 Control and Data Acquisition Software AFSWin Frame - Scan Filter - Scan EN scan test frame scan + filter scan detection of potential leaks mini scan x, y position of minimum local efficiency static measurement at potential leak position minimum local efficiency averaging counts during the whole scan integral efficiency

38 filter element testing HEPA/ULPA Filter Scanner AFS 15x EN 1822 Control and Data Acquisition Software AFSWin static measurement at several filter positions chosen by the operator EN static test multiple static measurements, free choise of x, y coordinates no 100% filter validation, fast control test local efficiency at these positions integral efficiency from averaging

39 filter element testing HEPA/ULPA Filter Scanner AFS 15x EN 1822 test report for retraceable documentation

40 Reference Customers more than 85 test rigs installed worldwide Automated Filter Media Test Rig AFC 13x (VDI 3926-II, ISO 11057) MAHLE (Germany) STFI (Germany) Norafin (Germany) Bernard Dumas (France) Kolon (Korea) University of Stuttgart (Germany) BG Filters (China) Motor Air Intake Filters ABP 115 (ISO 5011) Mann+Hummel (Germany, USA, India, Spain) Freudenberg (Germany) Mahle (China) Donaldson (USA, Belgium) Hengst (Germany) Misfat (Tunesia) Cabin Air Filters PAF 11x (DIN 71460, ISO 11155) Mann+Hummel (Germany) Freudenberg (Germany) Japan Vilene (Japan) 3M (Korea) Korea Vilene (Korea) Kitech (Korea) Filtrauto (France) Sung Jin (Korea) Clean & Science (Korea) Shandong Filter (China) Standard Air Filters ALF 114 (EN 779, ASHRAE 52.2) Freudenberg (Germany) Sofrance (France) Funcate (Brazil) Northern (UAE) Mikropor (Turkey) Unifil (Switzerland) Hanjin (Korea) Deltrian (Belgium) Filtrair (Netherlands) HEPA/ULPA Filter Scanner AFS 15x (EN 1822) Freudenberg (Germany) HS-Luftfilterbau (Germany) Mikropor (Turkey) Donaldson (Thailand) Jack Filter (Austria) Jasun Filters (UK)