 Mathematical model for predicting the magnitudes of total, diffuse, and direct-beam insolationP. C. Grindley, W. J. Batty and S. D. Probert Applied Energy, 1995, vol. 52, issue 2-3, 89-110 Abstract: The simple mathematical model presented assumes that: 1. (i) the characteristic diurnal distribution of the fraction of the incident solar radiation available outside the atmosphere that is received on a horizontal surface under clear-sky conditions can be expressed as a curve of the form [tau]gmr=Ae-cp[alpha]mr in which A is a scaling coefficient, mr is the relative air mass, and c[rho][alpha] is an attenuation factor which depends on the angle of incidence;2. (ii) the diffuse fraction can reasonably be described approximately as [tau]dmr[approximate]1-(Bmr+[tau]gmr) in which B is the broad-band absorptivity. Measured values for the solar irradiance recorded at 1 min time intervals at a rural location near Cambridge, UK, were used to examine the relationship between the fraction of the solar radiation received on a horizontal surface and the diffuse fraction. The measurements corroborate the predictions from the mathematical model, whose validity is thus supported. Date: 1995 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:52:y:1995:i:2-3:p:89-110 Ordering information: This journal article can be ordered from Access Statistics for this article Applied Energy is currently edited by J. Yan More articles in Applied Energy from Elsevier |
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