The decrease of fossil fuels availability and the consequent increase of their price, has led to a rapidly evolution of renewable market and policy frameworks in recent years. Renewable resources include solar radiation which is of considerable interest as it is inexhaustible, free and clean. In order to calculate how much work can be obtained from solar radiation, several methods have been proposed in the literature. The aim of this work has been to calculate the exergy content of solar radiation in Italy. To do this, we have analyzed real radiation data and we have treated direct and diffuse radiation separately. We have proposed a single exergy factor valid on the Italian area, which is to be applied to the total radiation measured on horizontal surface.
Computing the exergy of solar radiation from real radiation data on the Italian area
NERI, Manuela
;LUSCIETTI, Davide;PILOTELLI, Mariagrazia
2013-01-01
Abstract
The decrease of fossil fuels availability and the consequent increase of their price, has led to a rapidly evolution of renewable market and policy frameworks in recent years. Renewable resources include solar radiation which is of considerable interest as it is inexhaustible, free and clean. In order to calculate how much work can be obtained from solar radiation, several methods have been proposed in the literature. The aim of this work has been to calculate the exergy content of solar radiation in Italy. To do this, we have analyzed real radiation data and we have treated direct and diffuse radiation separately. We have proposed a single exergy factor valid on the Italian area, which is to be applied to the total radiation measured on horizontal surface.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
