Energy performance of concentrator and flat plate photovoltaics in the mediterranean area
A comparative analysis of the energy production of a High Concentrator Photovoltaic (CPV) and a flat plate amorphous photovoltaic (PV) plants, installed in the same place in the southern Italy, is presented. This analysis aims at providing reliable production values of CPV based on a long term monitoring with reference to this specific geographic zone. The daily normalized power production in different weather conditions is presented and the correlation between energy production and daily solar irradiance is discussed. Further, a statistical analysis on the normalized energy production is developed for both plants, referring to the measured historical data. Finally, economic aspects and the evaluation of levelized cost of energy for CPV based on in-field data are reported. On the basis of these considerations, the feasibility of CPV systems in southern Europe are discussed.
Mono-axial Solar Tracker with Equatorial Mount, for an Improved Model of a Photovoltaic Panel
In order to maximize the efficiency of a photovoltaic panel, a mechanical system known as a solar tracker is introduced. This paper offers a model of a solar tracker that allows the photovoltaic panel with a single tracking axis and a single motor to receive a quantity of solar radiation similar to those received by a normal surface. Which will reduce the cost of production, facilitate maintenance and minimize the consumption of the system, keeping the maximum performance throughout the year. Our solar tracker uses a modified equatorial mount, in order to follow the sun perfectly. Theoretical studies show that the yield of such a device varies according to the seasons between 91.7% at the winter and summer solstice, and 100% at the equinoxes compared to a normal surface to solar radiation. In order to compensate the loss at the solstices, we proposed to introduce mirrors at the top and bottom of the photovoltaic panel of a well-calculated size and angle. After carrying out the project, a real comparison made, showed us that our model offers an efficiency of about 43.46% compared to a fixed installation of the photovoltaic panel.
CNC Desktop Vertical Machining Bench Design and Cooling Fluid Application
Today's manufacturing technologies, the human work force is used and at least a minimum level of margin of error is used in CNC machines. Desktop CNC machine tools and CNC machine tools are developed in parallel with the development of personal computers. This study provides CNC training institutions for education, small and medium-sized enterprises for commercial purposes use the low-cost desktop machine has been designing and manufacturing of CNC vertical machining was carried out. Desktop CNC machine tools and production capacity to handle the kind of material was applied to increase the cooling fluid. Through A199 and Fe37 the cooling fluid application desktop CNC machine tools, such as processing of materials that are difficult to successfully processed. Keywords—CNC, Desktop CNC Machine, CNC Design