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Structural and physical properties of the dust particles in Qatar and their influence on the PV panel performance
منشور في 2016"…However, even when these characteristics have been addressed appropriately, there are other factors that adversely affect the performance of PV systems, namely the temperature-induced voltage decrease leading to a PV power loss and the dust accumulation (soiling). …"
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Optimizing the Cleaning Frequency of Solar Photovoltaic (PV) systems Using Numerical Analysis
منشور في 2021احصل على النص الكامل
doctoralThesis -
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Fourier-Transform Infrared Imaging Spectroscopy and Laser Ablation -ICPMS New Vistas for Biochemical Analyses of Ischemic Stroke in Rat Brain
منشور في 2018"…Areas close to the stroke focus experienced decrease in the lipid and lipid acyl contents associated with an increase in lipid ester, olefin, and methyl bio-contents with a novel finding of Aβ1-42 in the PL-GM and L-WM. …"
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Optimisation of PV Cleaning Practices: Comparison Between Performance Based and Periodic Based Approaches
منشور في 2018"…Although the biggest costs involved in this technology is the installation/capital costs, the subsequent running costs (although less than traditional sources of energy) such as cleaning and maintenance can increase or decrease the feasibility of these panels. Soiling, which is the deposition of materials (usually dust) that obstruct solar radiation falling on the panel and is one of the major factors of production losses in PV panels, and thus managing it will result in a positive economic and technical impact on PV plant feasibility. …"
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Performance of Monofacial and Bifacial Silicon Heterojunction Modules under Desert Conditions and the Impact of PV Soiling
منشور في 2023"…Moreover, the bifacial module was found to be less sensitive to the PV soiling than the monofacial module. The results showed that the frequency of module cleaning could be reduced for the bifacial module compared with the monofacial module, resulting in a remarkable decrease in the module cleaning cost and PV site Operation and Maintenance cost.…"
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Design and analysis of PV fed high-voltage gain DC-DC converter using PI and NN controllers
منشور في 2022"…To reuse the leakage-inductor (LI) energy of the CI with the help of a passive clamp circuit for reducing the voltage stress across the switch, similarly switch has less resistance so conduction losses also decreased. In this manner, the converter efficiency was improved and the diode recovery problem also solved. …"
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Optimal Energy Dispatch Engine for PV-DG-ESS Hybrid Power Plants Considering Battery Degradation and Carbon Emissions
منشور في 2023"…To test the performance of the developed model, real-time load and photovoltaic (PV) data were used in conjunction with a PV-DG-ESS hybrid plant. …"
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Thermodynamic analysis of a new renewable energy based hybrid system for hydrogen liquefaction
منشور في 2012"…In this paper, a parametric study of the triple effect absorption cooling system (TEACS) integrated with solar photo-voltaic/thermal (PV/T), geothermal, and Linde–Hampson cycle is conducted. …"
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Solar hydrogen production via thermochemical magnesium oxide – Magnesium sulfate water splitting cycle
منشور في 2020"…<p dir="ltr">This investigation reports the thermodynamic scrutiny of the MgO/MgSO<sub>4</sub> water-splitting cycle. At the initial stage, the thermal reduction temperature required for the commencement of the thermal dissociation of MgSO<sub>4</sub> (in the absence of inert Ar) and the maximum temperature below which the water-splitting reaction is feasible is identified by performing thermodynamic equilibrium calculations. …"
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Impact of trace noble metals on the catalytic performance of LaNiMgO towards methane dry reforming
منشور في 2024"…On the other hand, at the same time-on-stream LaNiMgO-Rh lost 0.3 and 0.7 % of its maximum CO2 and CH4 conversions, respectively.In durability measurements, and after 140h LaNiMgO-Rh exhibited slight decay in the CO2 conversion from 77.6 % to 70.5%, the CH4 conversion decreased from 72.3% to 64.2%. …"
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Impact of trace noble metals on the catalytic performance of LaNiMgO towards methane dry reforming
منشور في 2024"…In durability measurements, and after 140h LaNiMgO-Rh exhibited slight decay in the CO<sub>2</sub> conversion from 77.6 % to 70.5%, the CH<sub>4</sub> conversion decreased from 72.3% to 64.2%. …"
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Determining the influencing factors in the residential rooftop solar photovoltaic systems adoption: Evidence from a survey in Qatar
منشور في 2022"…<p>Renewable energy sources have developed rapidly, decreased in cost, and proven to have the potential to limit global warming. …"
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A new method for improving the solar photovoltaic unit efficiency through neem oil as coolant medium for high power applications—an experimental investigation
منشور في 2024"…Thus, the critical outcomes of the monocrystalline and polycrystalline PV panels are to decrease the panel temperature by 2.29% and 4.34%, respectively, and enhance the efficiency of the PV panels by 15.0% and 17.8%, respectively.…"
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A pathway to 25% reduction in greenhouse gas emission by 2030 using GIS-Based multi-criteria decision making for renewables, date palm (phoenix dactylifera), and carbon credits: a...
منشور في 2024"…Also, while Qatar has the potential to meet 20% of its energy demand by 2030 from renewable sources by using solar PV and wind, this will only account for a 14.28% reduction in overall emissions. …"
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Grid integration of renewable energy in Qatar: Potentials and limitations
منشور في 2021"…The results show that large-scale installations of renewable energy technologies can decrease the emission rate from electricity production at a relatively lower cost. …"
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Ultra-low thermal conductivity in scheelite and A-deficient scheelite ceramics
منشور في 2021"…BaMoO ceramic has shown a decrease in thermal conductivity from 0.8 W m K to 0.65 W m K from 400 K to 650 K. …"
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Burden of disease scenarios for 204 countries and territories, 2022–2050: a forecasting analysis for the Global Burden of Disease Study 2021
منشور في 2024"…All analyses were done at the cause-specific level so that only risk factors deemed causal by the GBD comparative risk assessment influenced future trajectories of mortality for each disease. …"
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