Research on the Flue Gas S Type Pitot Tube and 3D Pitot Tube Calibration Method and Inter- Comparison under Different Flow Conditions

Transcription

1 2017 APMP TC Initiative Project Research on the Flue Gas S Type Pitot Tube and 3D Pitot Tube Calibration Method and Inter- Comparison under Different Flow Conditions Type of Project: Comparison Technique January 1, December 31, 2018

2 Project Participants National Institute of Metrology, NIM Dr. Liang Zhang (Associate researcher) Tel: Korea Research Institute of Standards and Science, KRISS Dr. Woong Kang (Senior researcher) Tel: Center for Measurement Standards, CMS Dr. Chien-Yuan Chen (Engineer) Tel: National Metrology Institute of Japan, NMIJ Dr. Noboru Kurihara (Senior researcher) Tel: National Institute of Standards and Technology, NIST Dr. Iosif I. Shinder (Physicist) Tel:

3 01 Background Previous TC Initiative Projects The Research Content of this Project 04 Budget of this Project

4 Global Greenhouse Gas Emissions From the global perspective, 31.0% of greenhouse gas emissions are from electricity and heat production, power plants. Global Manmade Greenhouse Gas Emissions by Sector, 2013

5 Two Methods to Determine CO 2 1 Fuel: Amount & quality of coal 2 Emissions: Flow and CO 2 concentration 2 1

6 Data Consistency of Two Methods 0.06 Probability Density % Difference: Emissions Fuel

7 Uncertainty of the Two Methods Fuel based method: For natural gas-fired power plants, the measurement uncertainty using fuel based method is relatively small Coal and other solid fuels are heterogeneous. For coal-fired power plants, the measurement uncertainty using fuel based method is significant and difficult to improve Emission method: Most of current use flue gas flowmeter are not accurate enough and lack of calibration, measurement uncertainty can reach more than 20%. There is potential for improving accuracy Uncertainty of CO 2 concentration measurement can achieved 1%-2%.

8 NMIs Research Objectives Development flue gas flowmeters calibration facility and calibration methods 3D pitot tube is used as a transfer standard from laboratory calibration facility to the field calibration Improve the measurement accuracy of the flue gas flowmeters Use non-nulling 3D pitot tube instead of conventional S type pitot tube The target measurement uncertainty of flue gas CO 2 emissions is less than 3%

9 01 Background Previous TC Initiative Projects The Research Content of this Project 04 Budget of this Project

10 Previous TC Initiative Projects Stack flowmeter onsite calibration method Standard 3D Pitot Tube Automatic positioning system Stack Laser Geometric Calibration Laboratory Wind Tunnel Traceable Flowmeter Under Test Flow

11 Previous TC Initiative Projects Build laboratory calibration facilities: Calibrate the 3D pitot tube transfer standards Verify the accuracy of the point velocity area method NIM s Smoke Stack Simulator NIST s Smoke Stack Simulator KRISS Wind Tunnel CMS Wind Tunnel

12 Previous TC Initiative Projects Automated 3D Pitot Tube Calibration Rig : Calibrate the 3D pitot tube in different pitch and yaw angles Enables 3D pitot tubes to achieve non-nulling measurements KRISS CMS NIM NIST

13 Previous TC Initiative Projects Pitot tube research: Experiment and CFD simulation were used to study the effect of velocity, pitch angle, yaw angle, turbulence, pitot tube shape, etc. on the measurement of S type and 3D pitot tubes Velocity pitch angle 30 o 20 o 10 o 0 o -10 o -20 o -30 o yaw angle, degrees Angle Turbulence

14 Previous TC Initiative Projects Flue gas flowrate on-site measurement KRISS KRISS NMIs haven t done any pitot tube comparison yet, especially 3D pitot tube.

15 01 Background Previous TC Initiative Projects The Research Content of this Project 04 Budget of this Project

16 The Research Content of this Project Analyze S type pitot tube and 3D pitot tube calibration procedures, methods and comparison. Develop a procedure for comparison. Compare wind tunnel or Smoke Stack Simulator performance and agreement S type pitot tube comparison at 0 pitch and 0 yaw angle 3D pitot tube nulling method comparison Compare automation for 3D calibration 3D pitot tube non-nulling method comparison Compare turbulent generator and turbulent measurement Pitot tubes calibration in different turbulent intensity

17 The Research Content of this Project Transfer standard of this comparison. NIM will provide two commercial 3D pitot tube for comparison Cobra probe which can measure velocity(2-100m/s), pitch angle (±45 ), yaw angle(±45 ) and turbulent (<2kHz) Aeroprobe which can NIM measure 图标 velocity (2-600m/s), pitch angle (±50º), yaw angle (±50º) and turbulent (<4kHz) New models with small size, less blockage effect The length is adjustable, more suitable for this project

18 The Research Content of this Project Transfer standard of this comparison. Traditional S-type and 3D Pitot tubes

19 The Research Content of this Project Sequence of comparison NIM->NIST->NIM NIM->KRISS->NIM NIM->CMS->NIM NIM->NMIJ->NIM

20 01 Background Previous TC Initiative Projects The Research Content of this Project 04 Budget of this Project

21 Budget of this Project

22 Thank you for your attention