• Title/Summary/Keyword: 다점식 피토관

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Investigation on the Effective Calibration of Annubar (다점식 피토관의 효율적인 교정에 대한 연구)

  • Choi Yong-Moon;Choi Hae-Man;Choi Ji-Chul;Hong Kyung-Ki;Han Sang-Woo;Kim Woong-Sun;Chun Se-Jong
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.30 no.4 s.247
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    • pp.373-380
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    • 2006
  • Annubar is one of popular tools to measure the exhausted gas flow rate from the stacks. For the accurate monitoring of the amount of discharged pollutants, calibration of annubar is very important. Calibration of annubar has been carried out in a wind tunnel. When the length of annubar is longer than the test section size of wind tunnel, it is very difficult to find out typical value of annubar coefficients. So, a measurement technique to calibrate annubar longer than the size of the test section of wind tunnel must be developed. In the present study, an experiment is performed to measure the annubar coefficients in such a limited size of the wind tunnel. The experimental annubar coefficient by using a partial blocking technique is very close to the annubar coefficient of normal condition.