The objective of this research is to develop a new technique for improving the efficiency of Phot... more The objective of this research is to develop a new technique for improving the efficiency of Photovoltaic (PV) panels. This technique is done by coating the front surface of the PV panel by a fine layer of oil in order to increase the amount of light transmitted to the panel, and consequently its efficiency. Different types of oils are examined, including both mineral oils and natural oils. In case of mineral oils; vacuum pump oil (Labovac oil), engine oil (Mobil oil) and brake oil (Abro oil) are examined, while in case of natural oils; olive and sunflower oils are examined. An experimental setup has been developed to examine the performance of the PV panels as a function of oil coatings. The experimental setup consists of an artificial sun, the PV panel under investigation, a cooling system and a measuring system to measure the performance of the panel. It has been found that coating the PV panel with a fine layer of Labovac oil, $1 mm thick, improves the efficiency of the PV panel by more than 20%, and this is due to the high transmissivity of the Labovac oil compared to other oils. However, the Labovac oil has a drawback which is overheating of the panel due to its high transmissivity. Coating of PV panels with a fine layer of Labovac oil should be done only in cold regions, in order to avoid the heating effect that can decrease the power output of PV panels.
Photovoltaic/thermal (PV/T) system showed that it can combine the thermal energy system and the p... more Photovoltaic/thermal (PV/T) system showed that it can combine the thermal energy system and the photovoltaic energy system to form a composite photovoltaic/thermal (PV/T) system. The system generates both thermal and electrical energy simultaneously. The suggested system is a photovoltaic plus solar thermal hybrid system which provide up to 4 times the total energy from the same surface area. We thought about using one photovoltaic module and use cheap mirrors to concentrate more sun light on the Photovoltaic module and by that we can produce more electricity with less cost. The problem about concentrating sun light on one module would lead to increase the temperature of the Photovoltaic module and by that photovoltaic module would decrease its efficiency, so we thought about cooling photovoltaic system by water and use the heated water. The tracking system for a PV/T Concentrator is an integration of several innovative proprietary technologies, such as 4 x geometrical solar concentration design, solar tracking, bifacial receiver concentration and PV panel cooling. The system has been designed, installed and tested under the climatic conditions of Cairo, Egypt. The system is provided with the necessary measuring instruments to carry out the required tests. The experimental results show that Bifacial-concentrated solar module with cooling has higher short circuit current and open circuit voltage with compared normal solar module. Thereby, the power produced by Bifacialconcentrated solar module with cooling is nearly 3 times the power produced by normal solar module. Also, the system produces a hot water with temperature average of 53°C.
The objective of this research is to develop a new technique for improving the efficiency of Phot... more The objective of this research is to develop a new technique for improving the efficiency of Photovoltaic (PV) panels. This technique is done by coating the front surface of the PV panel by a fine layer of oil in order to increase the amount of light transmitted to the panel, and consequently its efficiency. Different types of oils are examined, including both mineral oils and natural oils. In case of mineral oils; vacuum pump oil (Labovac oil), engine oil (Mobil oil) and brake oil (Abro oil) are examined, while in case of natural oils; olive and sunflower oils are examined. An experimental setup has been developed to examine the performance of the PV panels as a function of oil coatings. The experimental setup consists of an artificial sun, the PV panel under investigation, a cooling system and a measuring system to measure the performance of the panel. It has been found that coating the PV panel with a fine layer of Labovac oil, $1 mm thick, improves the efficiency of the PV panel by more than 20%, and this is due to the high transmissivity of the Labovac oil compared to other oils. However, the Labovac oil has a drawback which is overheating of the panel due to its high transmissivity. Coating of PV panels with a fine layer of Labovac oil should be done only in cold regions, in order to avoid the heating effect that can decrease the power output of PV panels.
Photovoltaic/thermal (PV/T) system showed that it can combine the thermal energy system and the p... more Photovoltaic/thermal (PV/T) system showed that it can combine the thermal energy system and the photovoltaic energy system to form a composite photovoltaic/thermal (PV/T) system. The system generates both thermal and electrical energy simultaneously. The suggested system is a photovoltaic plus solar thermal hybrid system which provide up to 4 times the total energy from the same surface area. We thought about using one photovoltaic module and use cheap mirrors to concentrate more sun light on the Photovoltaic module and by that we can produce more electricity with less cost. The problem about concentrating sun light on one module would lead to increase the temperature of the Photovoltaic module and by that photovoltaic module would decrease its efficiency, so we thought about cooling photovoltaic system by water and use the heated water. The tracking system for a PV/T Concentrator is an integration of several innovative proprietary technologies, such as 4 x geometrical solar concentration design, solar tracking, bifacial receiver concentration and PV panel cooling. The system has been designed, installed and tested under the climatic conditions of Cairo, Egypt. The system is provided with the necessary measuring instruments to carry out the required tests. The experimental results show that Bifacial-concentrated solar module with cooling has higher short circuit current and open circuit voltage with compared normal solar module. Thereby, the power produced by Bifacialconcentrated solar module with cooling is nearly 3 times the power produced by normal solar module. Also, the system produces a hot water with temperature average of 53°C.
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