Description Usage Arguments Value Author(s) References See Also Examples
A set of correlations between the fraction of diffuse irradiation and the
clearness index used by fCompD
and fCompI
.
1 2 3 4 5 6 7 8 9 10 11 12 13 | ## Monthly means of daily values
FdKtPage(Ktd)
FdKtLJ(Ktd)
## Daily values
FdKtCPR(Ktd)
FdKtEKDd(Ktd, sol)
FdKtCLIMEDd(Ktd)
## Intradaily values
FdKtEKDh(kt)
FdKtCLIMEDh(kt)
FdKtBRL(kt, sol)
|
Ktd |
A numeric, the daily clearness index. |
kt |
A numeric, the intradaily clearness index. |
sol |
A |
A numeric, the diffuse fraction.
Oscar Perpiñán Lamigueiro; The BRL model was suggested by Kevin Ummel.
Page, J. K., The calculation of monthly mean solar radiation for horizontal and inclined surfaces from sunshine records for latitudes 40N-40S. En U.N. Conference on New Sources of Energy, vol. 4, págs. 378–390, 1961.
Collares-Pereira, M. y Rabl, A., The average distribution of solar radiation: correlations between diffuse and hemispherical and between daily and hourly insolation values. Solar Energy, 22:155–164, 1979.
Erbs, D.G, Klein, S.A. and Duffie, J.A., Estimation of the diffuse radiation fraction for hourly, daily and monthly-average global radiation. Solar Energy, 28:293:302, 1982.
De Miguel, A. et al., Diffuse solar irradiation model evaluation in the north mediterranean belt area, Solar Energy, 70:143-153, 2001.
Ridley, B., Boland, J. and Lauret, P., Modelling of diffuse solar fraction with multiple predictors, Renewable Energy, 35:478-482, 2010.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | Ktd=seq(0, 1, .01)
Monthly=data.frame(Ktd=Ktd)
Monthly$Page=FdKtPage(Ktd)
Monthly$LJ=FdKtLJ(Ktd)
xyplot(Page+LJ~Ktd, data=Monthly,
type=c('l', 'g'), auto.key=list(space='right'))
Ktd=seq(0, 1, .01)
Daily=data.frame(Ktd=Ktd)
Daily$CPR=FdKtCPR(Ktd)
Daily$CLIMEDd=FdKtCLIMEDd(Ktd)
xyplot(CPR+CLIMEDd~Ktd, data=Daily,
type=c('l', 'g'), auto.key=list(space='right'))
|
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