For the last few years a great deal of research work has been done in the field of wind energy to improve the performance of small wind turbines for domestic application. In this paper, a new approach of wind turbine is discussed. A new wind turbine system is developed that consists of a diffuser shroud with a broad-ring brim at the exit periphery and a small wind turbine inside it. Here, the improved effects of diffuser had on the overall performance of a small wind turbine system been studied. Besides, the effect of the diffuser shape had on the wind speed was analyzed by experimental setup and found that the wind speed in the diffuser was greatly influenced by the diffuser open angle, flange height, hub ratio, center body length, and inlet shroud shape and so on. The wind speed is increased near the inlet region of the shrouded diffuser. As a result, the output power co-efficient was increased remarkably by a factor of 2.5 to 3 times than that of a conventional wind turbine usually achieved in the field experiment
[1] Lilley, G.M.; Rainbird, W.J. A Preliminary Report on the Design and Performance of Ducted Windmills; Report No. 102; College of Aeronautics: Cranfield, UK, 1956.
[2] Gilbert, B.L.; Oman, R.A.; Foreman, K.M. Fluid dynamics of diffuser-augmented wind turbines. J. Energy 1978, 2, 368–374.
[3] Gilbert, B.L.; Foreman, K.M. Experiments with a diffuser-augmented model wind turbine. Trans. ASME, J. Energy Resour. Technol. 1983, 105, 46–53.
[4] Igra, O. Research and development for shrouded wind turbines. Energ. Conv. Manage. 1981, 21, 13–48.
[5] Phillips, D.G.; Richards, P.J.; Flay, R.G.J. CFD modelling and the development of the diffuser augmented wind turbine. In Proceedings of the Comp. Wind Engineer, Birmingham, UK, 2000, pp. 189–192.
[6] Phillips, D.G.; Flay, R.G.J.; Nash, T.A. Aerodynamic analysis and monitoring of the Vortec 7 diffuser augmented wind turbine. IPENZ Trans. 1999, 26, 3–19.
[7] Bet, F.; Grassmann, H. Upgrading conventional wind turbines. Renew. Energy 2003, 28, 71–78.
[8] Ohya, Y.; Karasudani, T.; Sakurai, A. Development of high-performance wind turbine with a brimmed diffuser. J. Japan Soc. Aeronaut. Space Sci. 2002, 50, 477–482 (in Japanese)
[9] Ohya, Y.; Karasudani, T.; Sakurai, A. Development of high-performance wind turbine with a brimmed diffuser, Part 2. J. Japan Soc. Aeronaut. Space Sci. 2004, 52, 210–213 (in Japanese)
Year 2012,
Volume: 4 Issue: 1, 31 - 42, 01.03.2012
[1] Lilley, G.M.; Rainbird, W.J. A Preliminary Report on the Design and Performance of Ducted Windmills; Report No. 102; College of Aeronautics: Cranfield, UK, 1956.
[2] Gilbert, B.L.; Oman, R.A.; Foreman, K.M. Fluid dynamics of diffuser-augmented wind turbines. J. Energy 1978, 2, 368–374.
[3] Gilbert, B.L.; Foreman, K.M. Experiments with a diffuser-augmented model wind turbine. Trans. ASME, J. Energy Resour. Technol. 1983, 105, 46–53.
[4] Igra, O. Research and development for shrouded wind turbines. Energ. Conv. Manage. 1981, 21, 13–48.
[5] Phillips, D.G.; Richards, P.J.; Flay, R.G.J. CFD modelling and the development of the diffuser augmented wind turbine. In Proceedings of the Comp. Wind Engineer, Birmingham, UK, 2000, pp. 189–192.
[6] Phillips, D.G.; Flay, R.G.J.; Nash, T.A. Aerodynamic analysis and monitoring of the Vortec 7 diffuser augmented wind turbine. IPENZ Trans. 1999, 26, 3–19.
[7] Bet, F.; Grassmann, H. Upgrading conventional wind turbines. Renew. Energy 2003, 28, 71–78.
[8] Ohya, Y.; Karasudani, T.; Sakurai, A. Development of high-performance wind turbine with a brimmed diffuser. J. Japan Soc. Aeronaut. Space Sci. 2002, 50, 477–482 (in Japanese)
[9] Ohya, Y.; Karasudani, T.; Sakurai, A. Development of high-performance wind turbine with a brimmed diffuser, Part 2. J. Japan Soc. Aeronaut. Space Sci. 2004, 52, 210–213 (in Japanese)
Sarwar, M. M., Nawshin, N., Imam, M. A., Mashud, M. (2012). A NEW APPROACH TO IMPROVE THE PERFORMANCE OF AN EXISTING SMALL WIND TURBINE BY USING DIFFUSER. International Journal of Engineering and Applied Sciences, 4(1), 31-42.
AMA
Sarwar MM, Nawshin N, Imam MA, Mashud M. A NEW APPROACH TO IMPROVE THE PERFORMANCE OF AN EXISTING SMALL WIND TURBINE BY USING DIFFUSER. IJEAS. March 2012;4(1):31-42.
Chicago
Sarwar, Md. Mahfuz, Nazia Nawshin, Muhammad Ali Imam, and Mohammad Mashud. “A NEW APPROACH TO IMPROVE THE PERFORMANCE OF AN EXISTING SMALL WIND TURBINE BY USING DIFFUSER”. International Journal of Engineering and Applied Sciences 4, no. 1 (March 2012): 31-42.
EndNote
Sarwar MM, Nawshin N, Imam MA, Mashud M (March 1, 2012) A NEW APPROACH TO IMPROVE THE PERFORMANCE OF AN EXISTING SMALL WIND TURBINE BY USING DIFFUSER. International Journal of Engineering and Applied Sciences 4 1 31–42.
IEEE
M. M. Sarwar, N. Nawshin, M. A. Imam, and M. Mashud, “A NEW APPROACH TO IMPROVE THE PERFORMANCE OF AN EXISTING SMALL WIND TURBINE BY USING DIFFUSER”, IJEAS, vol. 4, no. 1, pp. 31–42, 2012.
ISNAD
Sarwar, Md. Mahfuz et al. “A NEW APPROACH TO IMPROVE THE PERFORMANCE OF AN EXISTING SMALL WIND TURBINE BY USING DIFFUSER”. International Journal of Engineering and Applied Sciences 4/1 (March 2012), 31-42.
JAMA
Sarwar MM, Nawshin N, Imam MA, Mashud M. A NEW APPROACH TO IMPROVE THE PERFORMANCE OF AN EXISTING SMALL WIND TURBINE BY USING DIFFUSER. IJEAS. 2012;4:31–42.
MLA
Sarwar, Md. Mahfuz et al. “A NEW APPROACH TO IMPROVE THE PERFORMANCE OF AN EXISTING SMALL WIND TURBINE BY USING DIFFUSER”. International Journal of Engineering and Applied Sciences, vol. 4, no. 1, 2012, pp. 31-42.
Vancouver
Sarwar MM, Nawshin N, Imam MA, Mashud M. A NEW APPROACH TO IMPROVE THE PERFORMANCE OF AN EXISTING SMALL WIND TURBINE BY USING DIFFUSER. IJEAS. 2012;4(1):31-42.