Transcript ch08d.ppt

FIGURE 8.20 A sketch of the electromechanical system for converting wind turbine power to electric power, housed in the turbine hub pod.
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 8.21 A plot of the ratio of wind turbine power P to rated power Pr as a function of the ratio of wind speed V to rated wind
speed Vr, as in (8.19).
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 8.22 A U.S. map showing areas graded by the annual average wind energy flux ρV3/2, with darker areas indicating higher wind
energy flux. (Elliot, D. L., et al. Wind Energy Resource Atlas of the United States .DOE/CH 10093-4.Golden,Colo.:Solar Energy Research
Institute,1987.)
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 8.25 A plot of effectiveness as a function of capacity factor for a wind turbine having Cp = 16/27.
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 8.26 A row of wind turbines at a wind farm in Palm Springs, California. (By permission of DOE/NREL-PIX.)
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 8.27 The total power output from all wind farms in the Republic of Ireland for the month of February 2007. (Data from MacKay,
David. Sustainable Energy–Without the Hot Air. Cambridge, UK: LIT Cambridge Ltd., 2009.)
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 8.28 A sketch of the cross-section of a tidal power pool with dam.
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.
FIGURE 8.29 The pool and ocean levels, as well as power output, of a single effect tidal power plant during one tidal
cycle. (Data from Fay, J., and M. Smachlo. J. Energy, 7 (1983): 529.)
Energy and the Environment
James A. Fay / Dan S. Golomb
Copyright © 2011 by Oxford University Press, Inc.