Yazar "Chaichan, M.T." seçeneğine göre listele

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    Enhancement of PV/T Solar Collector Efficiency Using Alumina Nanoparticles Additives
    (International Information and Engineering Technology Association, 2023) Shallal, B.A.; Gedik, E.; Abdul, Wahhab, H.A.; Mahdi, L.A.A.; Chaichan, M.T.
    This study explores the performance of the Photovoltaic/Thermal system using nanofluid with a novel collector design. Experiments were carried out on the University of Technology- Iraq campus. An experiment was carried out using two photovoltaic modules, one connected to 120 protrusions arranged eight columns by 15 rows (for comparison) and the other not. Nanofluid was used to cool solar panels with flow rates of 1.5 and 3.5 l/min. The nanofluid contains nano-Al2O3 at 1%, 2%, and 3% concentrations in water. As the flow rate of water used as a cooling fluid increased, the surface temperature of the cell decreased. The cell temperature is reduced by 22.3% when Al2O3/water is added at a volumetric concentration of 3%. An increase in the electrical and thermal efficiency of PV/T systems was also recorded by 12% and 18.4%, respectively, at a concentration of 3%. © 2023 Wit Press. All rights reserved.
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    FEXPERIMENTAL INVESTIGATION OF PV/T SOLAR COLLECTOR EFFICIENCY WITH SPHERICAL-SHAPED PROTRUSIONS ON THE ABSORBER SURFACE
    (Taylor's University, 2023) Ajel, M.G.; Gedik, E.; Wahhab, H.A.A.; Mahdi, L.A.A.; Chaichan, M.T.
    The Accumulated heat on the PV panels' upper surface could be dissipated by water circulation in the backside attached collector. This paper presents an experimental study to improve the performance of the PV/T system by modifying the collector design using a spherical bulge on the collector surface. The work was carried out at the University of Technology-Iraq. Two PV solar cells have been used in the experimental investigation. One is cooled by different water flow rates of 1.5, 2, 2.5, and 3.5 l/min; the other is a bare reference unit without any modification. The illustrated bludges are a matrix of spheres with a 25 mm radius arranged in 8 rows by 15 columns. The thermal efficiency of the PV/T increased by 8.08%, and electrical efficiency increased by 8.1% compared with the bare panel. Additionally, the impact of flow rate was discussed and evaluated in this study. Increased water flow rate decreased the PV surface temperature in the new model. With a flow rate of 3.5 l/m, the maximum surface temperature decrease was 15.4%. © School of Engineering, Taylor’s University.