An improved non-dimensional model of wet-cooling towers حسب QURESHI, BILAL AHMED

احصل على النص الكامل

Structural and physical properties of the dust particles in Qatar and their influence on the PV panel performance حسب Brahim Aïssa (14157243)

"…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). …"

Optimizing the Cleaning Frequency of Solar Photovoltaic (PV) systems Using Numerical Analysis حسب Kaiss, El-Cheikh Amer Kais

احصل على النص الكامل

Optimisation of PV Cleaning Practices: Comparison Between Performance Based and Periodic Based Approaches حسب ALHAJERI, RASHED ABDULLA

"…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. …"
احصل على النص الكامل

Performance of Monofacial and Bifacial Silicon Heterojunction Modules under Desert Conditions and the Impact of PV Soiling حسب Amir A. Abdallah (11183642)

"…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.…"

Dielectric Properties of Y3Fe5O12 (YIG) Prepared at Different Molarities of NaOH حسب Assi, B.

"…In this study, Yttrium Iron Garnet (Y3Fe5O12) (YIG) powders were synthesized via co-precipitation method, followed by calcining the precipitates at 1100˚C. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

Design and analysis of PV fed high-voltage gain DC-DC converter using PI and NN controllers حسب Madisa V.G., Varaprasad

احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

Optimal Energy Dispatch Engine for PV-DG-ESS Hybrid Power Plants Considering Battery Degradation and Carbon Emissions حسب Laith Kanaan (21632714)

"…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. …"

Thermodynamic analysis of a new renewable energy based hybrid system for hydrogen liquefaction حسب Ratlamwala, Tahir Abdul Hussain

"…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. …"
احصل على النص الكامل

Determining the influencing factors in the residential rooftop solar photovoltaic systems adoption: Evidence from a survey in Qatar حسب Omar F. Alrawi (19418938)

"…<p>Renewable energy sources have developed rapidly, decreased in cost, and proven to have the potential to limit global warming. …"

A new method for improving the solar photovoltaic unit efficiency through neem oil as coolant medium for high power applications—an experimental investigation حسب Karthikeyan Ganesan (269200)

"…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.…"

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... حسب Hazrat Bilal (7367477)

"…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. …"

Grid integration of renewable energy in Qatar: Potentials and limitations حسب Eric C. Okonkwo (14151060)

"…The results show that large-scale installations of renewable energy technologies can decrease the emission rate from electricity production at a relatively lower cost. …"

Effect of AlN nanoparticle concentration in the electrolyte on corrosion resistance and mechanical properties of the electrodeposited composite coatings حسب Khan, M.S.

احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

Antioxidant and hepatoprotective activities of the oil fractions from wild carrot (Daucus carota ssp. carota) حسب Shebaby, Wassim N.

"…The sesquiterpene-rich fraction F1 had the highest FIC ability (IC50 = 0.28 mg/ml). Pretreatment with F1 and F4 reversed the CCl4-induced decrease in SOD, CAT, and GST levels and reduced significantly hepatic damage. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

Seasonal variations of trace metal chemical forms in bed sediments of a karstic river in Lebanon حسب Korfali, Samira Ibrahim

"…Climate is “Mediterranean”: wet winters and dry summers. Active sediment flushing is restricted to winter high discharge episodes. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل

Second-law-based performance evaluation of cooling towers and evaporative heat exchangers حسب QURESHI, BILAL AHMED

"…For the different input variables investigated, efficiencies were, almost always, seen to increase or decrease monotonically. We notice that an increase in the inlet wet bulb temperature invariably increases the second-law efficiency of all the heat exchangers. …"
احصل على النص الكامل

Proteome analysis of Candida albicans cell wall mutants. (c2011) حسب Koussa, Joseph Wissam

احصل على النص الكامل
احصل على النص الكامل

Deep Learning-Based Fault Diagnosis of Photovoltaic Systems: A Comprehensive Review and Enhancement Prospects حسب Majdi Mansouri (16869885)

"…These faults may affect the different system components such as PV modules, connection lines, converters/inverters, which can lead to a decrease in the efficiency, performance, and further system collapse. …"

Hepatoprotective, Antioxidant, and Anticancer Effects of the Tragopogon porrifolius Methanolic Extract حسب Tenkerian, Clara

"…In vitro antioxidant assays revealed an FRAP value of  µmol Fe2+/g of extract and DPPH IC50 value 15.2 µg/mL. …"
احصل على النص الكامل
احصل على النص الكامل
احصل على النص الكامل