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: ENCONTRO DE ENERGIA NO MEIO RURAL, 5., 2004, Campinas. Proceedings online... Available from: <http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022004000200011&lng=en&nrm=abn>. Acess on: 27 Apr. 2024.

The present work shows the reason (K_t=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 (K_t x n/N), related through simple linear regression, supplied an equation of R_G/R_o=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.