The production of energy by means of solar collectors has a great potential in farms. The aim of our work was to analyze the electrical yields given by three plants installed in a livestock farm and compare them with the outcomes of a predictive model to implement the theo- retical estimation procedure. Methodology The electricity production of the different photovoltaic plants was recorded for a full year and analysed. The incident solar energy, the air temperature at the panel level and the climatic data were measured at intervals of 10 minutes (for one plant only daily). These data have been related together in order to determine the actual energy performance as a function of solar radiation, exposure and inclination of the panels. The data were com- pared with the theoretical values calculated by means of a computer program available on the web (Institute for Energy - Joint Research Center of the European Community, 2012) that provides the energy per- formance depending on the location of and the features of the plants. Data analysis has allowed the identification of the deviations between the theoretical values and the actual performance values. An overall superiority of the latter ones with respect to the first ones has been ascertained. Hence the hypothesis, to be tested further, that the men- tioned model underestimates real yields or, more likely, the solar radi- ation. Furthermore it has been possible to determine the real influence on the nergy production of the design parameters of the system (expo- sure and slope) and the different construction technologies. The obser- vations have provided the basis for a preliminary assessment of the cor- respondence between the performance values given by the theoretical model and the real measured data. Through a more prolonged observa- tion some indications to implement the model (and in general the mod- els to estimate the performance of the PV panels) will be found out. At the same time a guidance on the most effective mode of installation of such facilities will be provided with special reference to the roofs of farm buildings.
Malagnino R.A., Zappavigna P. (2013). PERFORMANCE ANALYSIS OF THREE PHOTOVOLTAIC SOLAR PLANTS INSTALLED IN A LIVESTOCK FARM AND VALIDATION OF A PREDICTIVE MODEL.. Pavia : PAGEpress Publications.
PERFORMANCE ANALYSIS OF THREE PHOTOVOLTAIC SOLAR PLANTS INSTALLED IN A LIVESTOCK FARM AND VALIDATION OF A PREDICTIVE MODEL.
MALAGNINO, REMO ALESSIO;
2013
Abstract
The production of energy by means of solar collectors has a great potential in farms. The aim of our work was to analyze the electrical yields given by three plants installed in a livestock farm and compare them with the outcomes of a predictive model to implement the theo- retical estimation procedure. Methodology The electricity production of the different photovoltaic plants was recorded for a full year and analysed. The incident solar energy, the air temperature at the panel level and the climatic data were measured at intervals of 10 minutes (for one plant only daily). These data have been related together in order to determine the actual energy performance as a function of solar radiation, exposure and inclination of the panels. The data were com- pared with the theoretical values calculated by means of a computer program available on the web (Institute for Energy - Joint Research Center of the European Community, 2012) that provides the energy per- formance depending on the location of and the features of the plants. Data analysis has allowed the identification of the deviations between the theoretical values and the actual performance values. An overall superiority of the latter ones with respect to the first ones has been ascertained. Hence the hypothesis, to be tested further, that the men- tioned model underestimates real yields or, more likely, the solar radi- ation. Furthermore it has been possible to determine the real influence on the nergy production of the design parameters of the system (expo- sure and slope) and the different construction technologies. The obser- vations have provided the basis for a preliminary assessment of the cor- respondence between the performance values given by the theoretical model and the real measured data. Through a more prolonged observa- tion some indications to implement the model (and in general the mod- els to estimate the performance of the PV panels) will be found out. At the same time a guidance on the most effective mode of installation of such facilities will be provided with special reference to the roofs of farm buildings.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
