In the hot climates, such as the northern African climate, where the ambient temperature is usually higher than the optimal Photovoltaic operating temperature in most times of the year, the efficiency of the Photovoltaic drops is significantly affected. There are several studies which have suggested different correlations to estimate the power output and the cell efficiency relative to the outdoor conditions in different environments; usually including parameters such as the ambient and cell temperatures, wind speed, total incident radiation, other meteorological parameters, material and...

This is a report about design and manufacturing process of an automated juice mixer. The purpose of this machine is to provide a more hygienic alternative to conventional juice bar, while saving the excessive amount of water used in cleaning the cups in juice bars. The machine consists of the following subsystems: storage system, mixing system, pumping system, rinsing system, control system and electronics. A prototype was manufactured, which did not include all the features of the final product, but contained all the main systems mentioned.