Mechanical Engineering for Society and Industry

Articles

Improving cross-axis wind turbine performance: A Lab-scale investigation of rotor size and blades number

Endang Achdi , Berkah Fajar Tamtomo Kiono , Sonny Handojo Winoto , Mochammmad Facta

Abstract

Horizontal and vertical-axis wind turbines have long been used to generate electricity in open areas by utilizing horizontal wind flow. Under certain conditions, for example in multi-storey building areas, wind flows not only from horizontal but also vertical directions. Therefore, this research aims to develop a new turbine model known as a cross-axis to capture wind flow from horizontal and vertical directions around multi-storey buildings. Design, production, testing, and performance analysis are carried out in this project. The model is designed with a rotor diameter of 700 mm which has 5 vertical blades and 10 horizontal blades with a total height of 600 mm which is divided into two configurations, upper and lower. Performance analysis was carried out using a wind tunnel in a conditioned laboratory both in loaded and unloaded conditions. The output power of the wind turbine is measured using an electric dynamometer. The no-load test was applied to determine the time required to move from non-rotating to constant rotation at different speeds and horizontal blade angles. Meanwhile, the load test is used to determine the power coefficient at various speeds, horizontal blade pitch angles, and loads. The research results show that the time required to move from a non-rotating speed to a constant speed is influenced by the wind speed and the blade pitch angle. The power coefficient was also observed to be influenced by wind speed, blade pitch angle, and load. Furthermore, the shortest time to reach a constant rotation speed is around 20 seconds at a wind speed of 7.6 m/s and a blade pitch angle of 25°. The maximum power coefficient of the wind turbine was obtained at 5.2% at a wind speed of 7.6 m/s, blade pitch angle of 25°, and tip speed ratio of 0.5.

Keywords

Wind speed; Blade pitch angle; Wind turbine power; Power coefficient

References

  1. [1] W. T. Chong et al., “The development and testing of a novel cross axis wind turbine,” in Proceedings Of The 3rd Aun/Seed-Net Regional Conference On Energy Engineering And The 7th International Conference On Thermofluids (Rcene/Thermofluid 2015), 2016, p. 030003. doi: 10.1063/1.4949283.
  2. [2] A. Hemami, Wind turbine technology. Cengage Learning, 2012.
  3. [3] T. Burton, N. Jenkins, D. Sharpe, and E. Bossanyi, Wind energy handbook. John Wiley & Sons, 2011.
  4. [4] M. Casini, “Small Vertical Axis Wind Turbines for Energy Efficiency of Buildings,” Journal of Clean Energy Technologies, vol. 4, no. 1, pp. 56–65, 2015, doi: 10.7763/JOCET.2016.V4.254.
  5. [5] W.-T. Chong et al., “Cross axis wind turbine: Pushing the limit of wind turbine technology with complementary design,” Applied Energy, vol. 207, pp. 78–95, Dec. 2017, doi: 10.1016/j.apenergy.2017.06.099.
  6. [6] S. Basnet, K. Deschinkel, L. Le Moyne, and M. Cécile Péra, “A review on recent standalone and grid integrated hybrid renewable energy systems: System optimization and energy management strategies,” Renewable Energy Focus, vol. 46, pp. 103–125, Sep. 2023, doi: 10.1016/j.ref.2023.06.001.
  7. [7] M. Ragheb and A. M., “Wind Turbines Theory - The Betz Equation and Optimal Rotor Tip Speed Ratio,” in Fundamental and Advanced Topics in Wind Power, InTech, 2011. doi: 10.5772/21398.
  8. [8] M. M. M. Saad, “Comparison of Horizontal Axis Wind Turbines and Vertical Axis Wind Turbines,” IOSR Journal of Engineering, vol. 4, no. 8, pp. 27–30, Aug. 2014, doi: 10.9790/3021-04822730.
  9. [9] A. M. M. Almotairi, F. Mustapha, M. K. A. M. Ariffin, and R. Zahari, “Synergy of Savonius and Darrieus types for vertical axis wind turbine,” International Journal of ADVANCED AND APPLIED SCIENCES, vol. 3, no. 10, pp. 25–30, Oct. 2016, doi: 10.21833/ijaas.2016.10.005.
  10. [10] W. Chong, M. Gwani, C. Tan, W. Muzammil, S. Poh, and K. Wong, “Design and Testing of a Novel Building Integrated Cross Axis Wind Turbine,” Applied Sciences, vol. 7, no. 3, p. 251, Mar. 2017, doi: 10.3390/app7030251.
  11. [11] G. Mohammed, A. Ibrahim, U. Mohammed Kangiwa, and J. Benjamin Wisdom, “Design and Testing of Building Integrated Hybrid Vertical Axis Wind Turbine,” Journal of Electrical and Electronic Engineering, vol. 9, no. 3, p. 69, 2021, doi: 10.11648/j.jeee.20210903.12.
  12. [12] W. T. Chong, A. Fazlizan, S. C. Poh, K. C. Pan, W. P. Hew, and F. B. Hsiao, “The design, simulation and testing of an urban vertical axis wind turbine with the omni-direction-guide-vane,” Applied Energy, vol. 112, pp. 601–609, Dec. 2013, doi: 10.1016/j.apenergy.2012.12.064.
  13. [13] L. N. Azadani and M. Saleh, “Effect of blade aspect ratio on the performance of a pair of vertical axis wind turbines,” Ocean Engineering, vol. 265, p. 112627, Dec. 2022, doi: 10.1016/j.oceaneng.2022.112627.
  14. [14] E. Acdhi, B. FAJAR TK, S. H. Winoto, H. Hermawan, and T. Permana, “Distribution of Wind Speed Before and After Through Vane Tube Type Flow Straightener,” in The 9th Asia-Pacific Symposium on Applied Electromagnetics and Mechanics (APSAEM 2018), 2018.
  15. [15] W. Tian, J. Bian, G. Yang, X. Ni, and Z. Mao, “Influence of a passive upstream deflector on the performance of the Savonius wind turbine,” Energy Reports, vol. 8, pp. 7488–7499, Nov. 2022, doi: 10.1016/j.egyr.2022.05.244.
  16. [16] E. Achdi, B. Fajar, S. H. Winoto, and I. Lufti, “Preliminary Test on Cross Axis Type Wind Turbine,” Advanced Science Letters, vol. 24, no. 12, pp. 9620–9622, 2018.
  17. [17] V. Salgado, C. Troya, G. Moreno, and J. Molina, “Airfoil Selection Methodology for Small Wind Turbines,” International Journal of Renewable Energy Research, no. v6i4, 2016, doi: 10.20508/ijrer.v6i4.4642.g6930.
  18. [18] F. M. White, Fluid Mechanics, 7th Editio. McGraw-Hill, 2011.
  19. [19] M. Ó. Óskarsdóttir, “A General Description and Comparison of Horizontal Axis Wind Turbines and Vertical Axis Wind Turbines,” University of Iceland, 2014.
  20. [20] W. Hao, A. Abdi, G. Wang, and F. Wu, “Study on the Pitch Angle Effect on the Power Coefficient and Blade Fatigue Load of a Vertical Axis Wind Turbine,” Energies, vol. 16, no. 21, p. 7279, Oct. 2023, doi: 10.3390/en16217279.
  21. [21] M. N. Kaya, O. Uzol, D. Ingham, F. Köse, and R. Buyukzeren, “The aerodynamic effects of blade pitch angle on small horizontal axis wind turbines,” International Journal of Numerical Methods for Heat & Fluid Flow, vol. 33, no. 1, pp. 120–134, Jan. 2023, doi: 10.1108/HFF-02-2022-0128.
  22. [22] M. T. Nguyen, F. Balduzzi, and A. Goude, “Effect of pitch angle on power and hydrodynamics of a vertical axis turbine,” Ocean Engineering, vol. 238, p. 109335, Oct. 2021, doi: 10.1016/j.oceaneng.2021.109335.
  23. [23] A. Rezaeiha, I. Kalkman, and B. Blocken, “Effect of pitch angle on power performance and aerodynamics of a vertical axis wind turbine,” Applied Energy, vol. 197, pp. 132–150, Jul. 2017, doi: 10.1016/j.apenergy.2017.03.128.
  24. [24] K. Sathiyamoorthy, G. Naveen Kumar, and R. Allenki, “Effect of pitch angle in the performance of wind turbine using numerical techniques,” Journal of Physics: Conference Series, vol. 2054, no. 1, p. 012061, Oct. 2021, doi: 10.1088/1742-6596/2054/1/012061.
  25. [25] Y. Yang, Z. Guo, Q. Song, Y. Zhang, and Q. Li, “Effect of Blade Pitch Angle on the Aerodynamic Characteristics of a Straight-bladed Vertical Axis Wind Turbine Based on Experiments and Simulations,” Energies, vol. 11, no. 6, p. 1514, Jun. 2018, doi: 10.3390/en11061514.
  26. [26] I. Mas’ud and R. Firdaus, “Effect Of Rotor Blade Wing Tip On Wind Turbine Performance Using Naca 0018 Blade,” Procedia of Engineering and Life Science, vol. 1, no. 2, Jul. 2021, doi: 10.21070/pels.v1i2.979.
  27. [27] F.-B. Hsiao, C.-J. Bai, and W.-T. Chong, “The Performance Test of Three Different Horizontal Axis Wind Turbine (HAWT) Blade Shapes Using Experimental and Numerical Methods,” Energies, vol. 6, no. 6, pp. 2784–2803, Jun. 2013, doi: 10.3390/en6062784.
  28. [28] R. Roshan, P. Mirshra, and M. Agrawal, “Analysis of Blade Design, Power Output and Efficiency of A Horizontal Axis Wind Turbine on A Working Model,” International Journal of Emerging Technology and Advanced Engineering ISSN, pp. 2250–2459, 2014.
  29. [29] Y. Sarathi, K. Patel, A. Tirkey, P. K. Sen, and R. Sharma, “Study on Wind Turbine and Its Aerodynamic Performance,” International Journal of Mechanical Engineering and Robotic Research, vol. 4, no. 1, pp. 249–256, 2015.
  30. [30] P. J. Schubel and R. J. Crossley, “Wind Turbine Blade Design,” Energies, vol. 5, no. 9, pp. 3425–3449, Sep. 2012, doi: 10.3390/en5093425.
  31. [31] M. P. R. M. S. Sao and M. P. R. Mishra, “Analysis of NACA 4415 Blade profile For Horizontal Axis Wind Turbine Using Various Aerodynamic Characteristics,” International Journal of Engineering and Technical Research (IJETR), vol. 7, no. 7, 2017.
  32. [32] P. Ghiasi, G. Najafi, B. Ghobadian, A. Jafari, and M. Mazlan, “Analytical Study of the Impact of Solidity, Chord Length, Number of Blades, Aspect Ratio and Airfoil Type on H-Rotor Darrieus Wind Turbine Performance at Low Reynolds Number,” Sustainability, vol. 14, no. 5, p. 2623, Feb. 2022, doi: 10.3390/su14052623.
  33. [33] M. R. Islam, L. Bin Bashar, D. K. Saha, and N. Rafi, “Comparison and Selection of Airfoils for Small Wind Turbine between NACA and NREL’s S series Airfoil Familie,” International Journal of Research in Electrical, Electronics and Communication Engineering, vol. 4, no. 2, 2019, doi: 10.5281/zenodo.3520469.
  34. [34] W. Mangestiyono, B. Setyoko, D. Yoel Tadeus, and Yuniarto, “Mechanical Strength of 10 kW Wind Turbine Blade Utilize Glass Fiber Reinforced Plastic,” Materials Today: Proceedings, vol. 13, pp. 71–75, 2019, doi: 10.1016/j.matpr.2019.03.190.
  35. [35] S. Widiyanto, Sasongko Pramonohadi, and Mohammad Kholid Ridwan, “Performance Analysis of Small Horizontal Axis Wind Turbine with Airfoil NACA 4412,” International Journal of Science, Technology & Management, vol. 2, no. 1, pp. 347–357, Jan. 2021, doi: 10.46729/ijstm.v2i1.165.
  36. [36] I. Chikha, Y. Bouzidi, N. Tazi, S. Baklouti, and R. Idir, “Potential recovery of glass and carbon fibers from wind turbine blades through different valorization techniques,” Wind Engineering, Sep. 2023, doi: 10.1177/0309524X231191056.
  37. [37] A. Muratoglu and M. I. Yuce, “Performance Analysis of Hydrokinetic Turbine Blade Sections,” Advances in Renewable Energy, vol. 2, pp. 1–10, 2015.