الفهرس 
ContentsOnly 14 pages are availabe for public view
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Abstract
Summary : It was and still is the science of God’s superiority and the greatness of the human being distinguished from the jealousy and continued the curve of scientific progress in the rise and the importance of influencing the present and future of the United Nations. What was yesterday was a dream is impossible today is a tangible reality. Is the energy is a key element in building a civilized and civilized society built on the basis of science and knowledge. Energy contributed to the overall development, especially agricultural development, and the world relied on traditional energy for a long periled of time until the problems of environmental pollution the rise in prices and the consequent large economic, which are most important factors that lead us to the need to circumvent the benefits to our country from renewable sources of energy and the need to exploit them. What we have been doing is a modest attempt to identify such inexhaustible energies as photovoltaic energy. And control of the technologies of these renewable energies will put poor countries on the threshold of a new door of scientific progress and will solve some of the problems of the economic and development. 5.1 study objective. The aim of these study utilization of renewable energy technology contributes to solving the problem of energy shortage and as a suitable alternative to conventional energy. The study and practical experience in the solar energy laboratory at the Faculty of Engineering Mansoura University and the construction of an electronic simulation model using the program of by MicroC pro and proteus. 5.2 Experimental factors. 1. Power calculation from PV cells, motor, and required for the blower. 2. Volume of air required for kg fish /min (theoretical). 3. Time management system. 4. System testing. 5. Measurements of dissolved oxygen inside the tank and conclusion the most preferably duty cycle. 6. Motor control. 7. Solar power system design calculation. 8. Total cost for 400 watt system. 5.3 Experimental Measurements. 1. Electrical current and voltage for solar panel with device Avometer. 2. Dissolved oxygen in water inside fish tank. 3. Graph with voltage values on the y-axis and time (in fraction of a second) on the x-axis with device oscilloscope. 4. Velocity of flow at outlet for air blower with device Digital Anemometer. 5.4 The obtained results indicated that : 1. need to output power photovoltaic cells 400 watt for running the system. 2. Load energy usage 1.27 kwh/day. 3. Dissolved oxygen levels for fish rise above 3 ppm (stressed level). 4. 13.33 % duty cycle is preferably and Ttotal(15) = Ton(2)+Toff(13). 5. motor control code : (Turns on = 12000 ms relay) (Turns off =7800000ms). 6. Running motor time (actual) =3.2 hr. day. 7. Solar radiation = 1.807 kwh/m2/day. 8. Completed design to operate the system for 3.2 hours need to motor 320 watt Ac, one inverter, four charge controllers, one battery 200 amp, and three solar panel. 9. Initial cost PV system for 5 years = 6000 EG₱ and average cost /watt =15 EG₱. 10. Average cost of energy /kWh = 2.6 EG₱.