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Ain Shams University (2016)

PERFORMANCE EVALUATION OF SOLAR POWERED PUMP BASED ON A DRIP IRRIGATION SYSTEM FOR SMALL SCALE AREAS USING NUCLEAR TECHNIQUES

ELDEHN,ISRAA FATHY MOHAMED

Titre : PERFORMANCE EVALUATION OF SOLAR POWERED PUMP BASED ON A DRIP IRRIGATION SYSTEM FOR SMALL SCALE AREAS USING NUCLEAR TECHNIQUES

Auteur : ELDEHN,ISRAA FATHY MOHAMED

Etablissement de soutenance : Ain Shams University

Grade : Master of Science (MSc) in Agricultural Science 2016

Résumé partiel
At this study an evaluate the performances of a direct photovoltaic pumping system based on an asynchronous motor driving a centrifugal pump. The system was tested and evaluated while operating under Inshas climatic conditions. Field experiments were conducted in the Farm of Soil and Water Research Department, Nuclear Research Center, located at Inshas city, Sharkia Governorate which represents sandy soil conditions, Atomic Energy Authority, Egypt. The latitude and longitude of the experiment site are 30o 24` N, 31o 35` E, respectively, Egypt. Based on the results conclusions are as follows : • Solar radiation also differs according to seasons, in winter the sun becomes lower in the sky and higher in summer because sun ray’s angle changes due to the earth’s tilt angle. • PV generator was tested under the Inshas desert climate. The fluctuation of solar intensity and ambient temperature influenced the generator output current and voltage respectively as mentioned by the manufacturer. The day length and sun hours affected the total daily power harvest through the months. • Generated electric power was measured at different times during test days starting 8:00 a.m. to 16:00 p.m.. The results show that generated electric power increases with increasing solar radiation intensity which means that generated electric power of PV module depends on solar radiation intensity at different values ranged at 620 W/m2 in the morning and 438 W/m2 at afternoon and 1074 W/m2 at midday. • Variation solar radiation intensity affects in generated electric power. The highest solar radiation intensity was obtained at midday when sun ray is perpendicular on the surface. • Module temperature was measured as a function of time during test days starting 8:00 a.m. to 16:00 p.m. in months January, February, March, April and May. (PV) performance decreases with the increase of module temperature. Module temperature and solar radiation intensity play a big part in the photovoltaic conversion process. the change of output voltage average for every module temerature degree kelven was (-0.07%V/C) at 34.7ºC. On the otherhand, it was (-0.24%V/C) at 43.8oC and it was (-0.36%V/C) at 51.8oC, while manufacturer it was (-0.35%V/C). The change of generated electric power average for every module temerature degree kelven was (-0.27%W/K) module temperature at 34.7ºC. On the otherhand, it was (-0.27%W/K) at 43.8oC and it was (-0.40%W/K) at 51.8oC, while manufacturer mentioned that it was (-0.45%W/C). • Module efficiency indicate graduate increase with increase solar radiation intensity. Module efficiency average values reached to be 14.70% at 12:00 p.m. when the average of solar radiation reaches to be 1074 W/m2 at midday for months March, April and May for months March, April and May. • The increase of hydraulic power as a result of the increasing in solar radiation intensity for months March, April and May. Hydraulic power average values reached to be 161W at 12:00 p.m. when the average of solar radiation reaches to be 1074 W/m2 at midday for months March, April and May.

Présentation étendue (EULC)

Page publiée le 12 février 2019