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Encontro de Energia no Meio Rural



Abstract

RECIERI, Reinaldo Prandini, QUALLIO, Silvana, FERRUZZI, Yuri et al. Global solar irradiation in function of the insolation reason. In Procedings of the 5th Encontro de Energia no Meio Rural, 2004, Campinas (SP) [online]. 2004 [cited 16 June 2024]. Available from: <http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022004000200011&lng=en&nrm=iso> .

The present work shows the reason (Kt=RG/Ro) of global the solar irradiation for the irradiation in the top of the atmosphere in the horizontal incidence in function of the insolation reason (n/N), objectifying itself to find an equation esteem the daily global solar irradiation in the region of Cascavel/PR. The experimental data had been gotten in STATION AGROMETEOROLOGICAL of the IAPAR (AGRONOMIC INSTITUTE of the PARANÁ) mounted in the Coodetec/Cascavel-Pr (Latitude 24,89ºS, Longitude 53,40ºO and altitude of 682m). The component of global the solar irradiation was monitored by an actinograph and the hour of solar brightness (n) through a heliograph (R. FUESS Berlin-stegutz) in a period of 17 years, of which four had been used in the validation of the model. The distribution of the daily values (Kt x n/N), related through simple linear regression, supplied an equation of RG/Ro=0,16+0,40n/N estimate with raised determination coefficient (R2 = 88.89%), in the validation of the model got a -9,76% shunting line varying 11,44% with average error in the 0,84% order, these statistical values shows that global the solar irradiation, in the region of Rattlesnake, can be esteem with good precision.

Keywords : irradiação global; índice de claridade; modelo de Angstron.

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