Transcription of ESTIMATING WIND SPEED AS A FUNCTION OF HEIGHT …
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ESTIMATING WIND SPEED AS A FUNCTION OF HEIGHT …
SAND84-2530 Unlimited Release Printed 1985 ESTIMATING WIND SPEED AS A FUNCTION OF HEIGHT ABOVE GROUND: AN ANALYSIS OF DATA OBTAINED AT THE SOUTHWEST RESIDENTIAL EXPERIMENT STATION, LAS CRUCES, NEW MEXICO D. F. Menicucci and I. J. Hall Sandia National Laboratories Albuquerque, New Mexico 87185 Abstract Thermal modelling of photovoltaic arrays requires accurate estimates of wind SPEED at the level of the arrays. Wind SPEED data are normally recorded by an anemometer at the 30-foot level. To estimate the relationship between wind SPEED and HEIGHT , wind SPEED data were acquired at various heights in the range of 10 to 30 feet and a nonlinear regres-sion analysis was performed.
speed yielded by Equation 1 for heights less than 30 feet is not equivalent to the actual wind speed and is not suitable for use in analysing the SWRES data. ... percent statistical prediction limits for Vii are given by: VH + Bnd , where 1\ VH is given in (6) and A The RMS in Table 3 provides Var(e) = .49. As shown in the appendix, over the
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