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

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Presentation on theme: "Pannon Power – Biomass Power Plant project combustion flow measurement using a diff.pressure Pitot tube and a unique calibration method Manninger Gusztav."— Presentation transcript:

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 Technical Solution Possibilities Results

3 35 MW-capacity – biomass 100% green energy for the total central heating demand of city PÉCS

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10 Venturi details:

11 Old Power station building – new plant – fixed isometric There can not be measured any flow ! – there are no straight pipe lines –But there are valves just ahead of the measuring points –And we have elbows…….which should avoid ! look at the isometric: What’s the problem ?

12 Measuring principle Overvie

13 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 Overview

14 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 DFL100 aplicable:

15 Density nn standard density under standard conditions PnPn standard pressure = 1,013 x 105 Pa P operating pressure in Pa TnTn standard temperature = 0°C T operating temperature in °C Volume Flow Standard Volume Flow

16 Accuracy… 

17 Low flow, huge diameter, looking for the cheepest solution – as it used to be No ultrasonic possibilities just because the very low pressure No more dp loss is allowed Short delivery time THE ONLY POSSIBILITY A DP MEASURING NO CHANCE FOR VENTURI AVERAGING PITOT TUBE - WITH AN UNIQUE CALIBRATION MADE BY Possibilities

18 There is a VENTURI master meter in a common pipe line –d=1000 mm –D=2000 mm –L=11873 mm All the 6 pcs. of DURAG DFL100 probe can be easily blindid Different flowrates – fast response Small type of shut off valves – for blinding all the 6 DFL100 Measuring points with opening/closing pipe sections – calibrating to the master meter, and to thouse probes which are installed perfectly 3 probes are percfectly installed 3 probes had no space for the right installation Calibration method

19 QventABCDEFdP VentureNm³/h VentSzelep nyitva 45%4600037000200000370023000756F129700 45%4600037800200000210006000751E130800 45%45000370002000015000130000760D130000 45%33000100026000170001300020000570C110000 45%22000490002000013000B104000 A0 0 70%40000720003100020000 240001850145000207000 55%3200057000250001600012000190001100113500161000 45%2600047000200001300080001600073092300130000 35%2100037000160001000045001200045071300100500 30%1800032000135008800350095006100085300 30%2400080000128007000150004760066800 45%360008000019000160002300072000102000 45%55000470002400030000085000129000 35%42500365001900020000066000100000 Some resoults at different flow rates……

20 00,062,400,063,5 13,361,713,363,1 26,760,626,762,4 310,059,0310,061,3 413,357,0413,359,7 516,754,5516,757,8 620,051,5620,055,5 723,348,2723,352,7 826,744,3826,749,6 930,040,0930,046,0 1033,335,21033,342,0 1136,730,01136,737,7 1240,024,41240,032,9 1343,318,21343,327,7 1446,711,71446,722,2 1550,04,61550,016,2

21 Some more……at different operating points

22 Some resoults at different flow rates……

23 Calibration curves

24 www.flowell.hu www.jovoert.eu

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26 Thank you !


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