한국태양에너지학회 논문집 (Journal of the Korean Solar Energy Society)

  • 제34권3호
  • /
  • Pages.98-106
  • /
  • 2014
  • /
  • 1598-6411(pISSN)
  • /
  • 2508-3562(eISSN)
한국태양에너지학회 (The Korean Solar Energy Society)
권호 표지
DOI QR코드

DOI QR Code

소형 수직축 풍력발전기 풍동실험시 폐쇄율의 영향

Effect of Blockage Ratio on Wind Tunnel Testing of Small Vertical-Axis Wind Turbines

  • Jeong, Houi-Gab (Department of Civil Engineering, Chonbuk National University) ;
  • Lee, Seung-Ho (KOCED Wind Tunnnel Center, Chonbuk National University) ;
  • Kwon, Soon-Duck (Department of Civil Engineering, Chonbuk National University)
  • 투고 : 2014.04.28
  • 심사 : 2014.06.23
  • 발행 : 2014.06.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The effect of blockage ratio on wind tunnel testing of small vertical-axis wind turbine has been investigated in this study. Height and rotor diameter of the three blades Darrieus vertical axis wind turbine used in present test were 0.4m and 0.35m respectively. We measured the wind speeds and power coefficient at three different wind tunnels where blockage ratio were 3.5%, 13.4% and 24.7% respectively. The test results show that the measured powers have been strongly influenced by blockage ratio, generally increased as the blockage ratio increases. The maximum power at higher blockage ratio has been obtained at relatively high tip speed ratio compared with that at low blockage ratio. The measured power coefficients under high blockage ratio can be improved from proper correction using the simple correction equation based on blockage factor. In present study, the correction error for power coefficient can be less than 5%, however correction effectiveness reveals relatively poor at high blockage ratio and low wind speed.

키워드

참고문헌

  1. IEC 61400-2, Wind turbine generator systems-Part2 : Safety of small wind turbines, 2004.
  2. T.Y. Chen and L.R. Liou, Blockage corrections in wind tunnel tests of small horizontal-axis wind Turbines, Experimental Thermal and Fluid Science 35, pp. 565-569, 2011. https://doi.org/10.1016/j.expthermflusci.2010.12.005
  3. S. Hirai, A. Honda, and K. Kariromi, Wind loads investigations of HAWT with wind tunnel tests and site measurements, Paper Presented in Wind Power Asia, Beijing, June 2008.
  4. A.S. Bahaj, A.F. Molland, and J.R. Chaplin, W.M.J. Batten, Power and trust measurements of marine current turbines under various hydrodynamic flow conditions in acavitation tunnel and a towing tank, Renewable Energy 32, pp. 407-426, 2007. https://doi.org/10.1016/j.renene.2006.01.012
  5. M.A. Kamoji, S.B. Kedare, and S.V. Prabhu, Performance tests on helical Savonius rotors, Renewable Energy 34, pp. 521-529, 2008.
  6. I. Ross and A. Altman, Wind tunnel blockage corrections:Review and application to Savonius vertical-axis wind turbines, Journal of Wind Engineering and Industrial Aerodynamics, Vol. 99, pp. 523-538, 2011. https://doi.org/10.1016/j.jweia.2011.02.002
  7. K.P. Cho, S.H. Jeong and I.T Chang, A Study on blockage effects of vertical axis wind turbines, Vol.16 No.3, The Wind Engineering Institute of Korea, pp. 117-223, 2012.
  8. C.K. Choi and D.H. Kwon, Wind tunnel blockage effects on aerodynamic behaviors of square section, Vol. 3 No. 1, The Wind Engineering Institute of Korea, pp. 89-98, 1999.
  9. J.B. Barlow, W.H. Rae and A. Pope, Low-speed wind tunnel testing, third edition, John Wiley & Sons, Inc., 1999.
  10. ASCE Standard, Wind tunnel testing for buildings and other structures, June 1997.
  11. H.S. Kang and C. Meneveau, Direct mechanical torque sensor for model wind turbines, Vol. 21, No. 10, Measurement Science and Technology, 2010.
  12. IEC 61400-12-1, Windturbines- Part 12-1 Power performance measurements of electricity producing wind turbines, 2005

피인용 문헌

  1. Performance prediction of loop-type wind turbine vol.12, pp.2, 2014, https://doi.org/10.1177/1687814019840472