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Manninger Gusztav Flowell Kft.

Pannon Power – Biomass Power Plant project combustion flow measurement using a diff.pressure Pitot tube and a unique calibration method. Manninger Gusztav Flowell Kft. Project , measuring method intorduction. Measuring problem. Calibration method. Possibilities. Technical

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Manninger Gusztav Flowell Kft.

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  1. Pannon Power – Biomass Power Plant project combustion flow measurement using a diff.pressure Pitot tube and a unique calibration method Manninger Gusztav Flowell Kft.

  2. Project , measuring method intorduction Measuring problem Calibration method Possibilities Technical Solution Results

  3. 35 MW-capacity – biomass 100% greenenergyforthetotalcentralheatingdemand of city PÉCS

  4. DFL100 flowmeters Venturi meter

  5. Venturi details:

  6. What’stheproblem ? • Old Powerstation building – newplant – fixed isometric • Therecannot be measuredany flow ! • thereare no straightpipelines • Buttherearevalvesjustahead of themeasuringpoints • And wehaveelbows…….whichshouldavoid ! lookattheisometric:

  7. Measuring principle Overvie

  8. Overview • Flow rate measurement with a probe by the principle of differential pressure method • Evaluation with the Microprocessor Unit D-FL 100-10 (optional) • Adjustable parameters • Load-independent current for line recorder and indicator instrument

  9. DFL100 aplicable: • stack diameter 0.3 to 8 m (Probe I: 0.3 to 2 m, Probe II: 2 to 4 m; Probe III: 4 to 8 m) • minimum gas velocity 3 m/s • for gases above dew point • temperatures up to 400°C / stainless steel 1.4571 • temperatures up to 700°C / Inconel 600 • special materials for acid gases / Hastelloy C276 • accuracy guaranteed better than ±2% according to VDI 2066 • transmitter mountable on the probe or separately • cross-over cock for zero-point control and backflow purging • long maintenance intervals > 3 month • dust loads up to 150 mg/nm3 without automatic purging systems • microprocessor evaluation unit for temperature and absolute pressure compensation • very robust system • transmitters are factory calibrated • easy to install

  10. Accuracy…

  11. Possibilities • Low flow, hugediameter, lookingforthecheepestsolution – asitusedto be • No ultrasonicpossibilitiesjustbecausetheverylowpressure • No more dploss is allowed • Shortdeliverytime THE ONLY POSSIBILITY A DP MEASURING • NO CHANCE FOR VENTURI • AVERAGING PITOT TUBE - WITH AN UNIQUE CALIBRATION MADE BY

  12. Calibrationmethod • There is a VENTURI mastermeterin a commonpipe line • d=1000 mm • D=2000 mm • L=11873 mm • Allthe 6 pcs. of DURAG DFL100 probecan be easilyblindid • Differentflowrates – fastresponse • Smalltype of shutoffvalves – forblindingallthe 6 DFL100 • Measuringpointswithopening/closingpipesections – calibratingtothemastermeter, and tothouseprobeswhichareinstalledperfectly 3 probesarepercfectlyinstalled • 3 probes had no spaceforthe right installation

  13. Someresoultsatdifferent flow rates……

  14. Someresoultsatdifferent flow rates……

  15. Some more……atdifferentoperatingpoints

  16. Someresoultsatdifferent flow rates……

  17. Calibrationcurves

  18. www.flowell.hu www.jovoert.eu

  19. Thank you !

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