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Temperature Effect on Power Drop of Different Photovoltaic Modules

Solar module operating temperature is the second major factor affects the performance of solar photovoltaic panels after the amount of solar radiation. This paper presents a performance comparison of mono-crystalline Silicon (mc-Si), poly-crystalline Silicon (pc-Si), amorphous Silicon (a-Si) and Cupper Indium Gallium di-selenide (CIGS) photovoltaic technologies under Climate Conditions of Baghdad city. Temperature influence on the solar modules electric output parameters was investigated experimentally and their temperature coefficients was calculated. These temperature coefficients are important for all systems design and sizing. The experimental results revealed that the pc-Si module showed a decrease in open circuit voltage by -0.0912V/ºC while mc-Si and a-Si had nearly -0.07V/ºC and the CIGS has -0.0123V/ºC.  The results showed a slightly increase in short circuit current with temperature increasing about 0.3mA/ºC ,4.4mA/ºC and 0.9mA/ºC for mc-Si , pc-Si and both a-Si and CIGS. The mc-Si had the largest drop in output power about -0.1353W/ºC while -0.0915, -0.0114 and -0.0276 W/ºC for pc-Si, a-Si and CIGS respectively. The amorphous silicon is the more suitable module for high operation temperature but it has the lowest conversion efficiency between the tested modules.

 

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Publication Date
Sun Jul 01 2007
Journal Name
Journal Of The Faculty Of Medicine Baghdad
An appraisal of urine cytology in the diagnosis of transitional cell carcinoma of the urinary bladder

Background: Urine cytology has an acceptable sensitivity, & specificity that justifies its use in the current diagnostic protocol. In Iraq transitional cell carcinoma (TCC) constitute about 62.1 % of bladder cancer (which ranks the third according to the results of Iraqi Cancer Registry 1995-1997). Urine cytology used in the primary diagnosis, follow up, and in the screening programs of asymptomatic but high-risk patients.
Patients and methods: This study was conducted on 93 patients, diagnosed or clinically suspected to have TCC of the urinary bladder attending to the Urological department in ALKadhimiya Teaching Hospital, AL-Yarmouk Teaching Hospital, and Baghdad Medical City. During the p

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Publication Date
Thu Oct 10 2019
Journal Name
Journal Of The College Of Education For Women
Constitutional Review of 1992 and 1996 and the role of the Party of Progress and Socialism

Constitutional Review of 1992 and 1996 and the role of the Party of Progress and Socialism

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Publication Date
Sun Jul 04 2010
Journal Name
Journal Of The Faculty Of Medicine Baghdad
The role of IL-6 in the etology of tinea versicolor in group of Iraqi patients.

Background Tinea versicolor is a common dermatological problem worldwide in distribution, caused by dimorphic fungus called Malassezia furfur, they exist at the very interface between
commensal and pathogen and, as such, their interaction with the human immune system is of great interest. Immuno-inflamatory activity mediated by different cytokines could have a role in the etiology of tinea versicolor.
Patients and Method: The study covered 46 subjects .It comprised 26 patients with TV compared with 20 healthy normal controls. Serum IL-6 analysis was done by ELISA.
Results: The level of IL-6 was elevated in patients with tinea versicolor, when compared with healthy control
Conclusion: IL-6 increases du

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Publication Date
Wed Jan 23 2019
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
The impact of external borrowing to bridge the federal budget deficit of the Republic of Iraq

 The deficit budget, one of the results of increased public spending for their revenues due to the economic pressures imposed by the interest of the economies of those countries from the need to increase government spending in order to revitalize the national economy and accelerate economic growth rates and provide employment to the growing levels of unemployment in those countries opportunities and what is required to address the current debt crisis (borrowing), which has become a big burden on the governments and the need to move towards the application of austerity spending and tax increases, which inevitably forced those countries will be reflected reduced spending on basic aspects of life and their peoples, particularly earners

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Publication Date
Wed Feb 01 2023
Journal Name
Practice Periodical On Structural Design And Construction
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Publication Date
Fri Jun 01 2018
Journal Name
Journal Of Cranio-maxillofacial Surgery
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Publication Date
Sun Jun 12 2011
Journal Name
Baghdad Science Journal
Measurement of Uranium Concentration in Soil of Middle of Iraq using CR ?V 39 Track Detector

The aim of this research is to determine the uranium concentration in soil and water samples taken from different locations from the middle and south of Iraq using fission fragments track registration. Twelve samples of soil and water were taken from middle and South of Iraq. The nuclear reaction used as a source of nuclear fission fragments is U-235 (n.f) obtained by bombardment U-235with thermal neutrons from (Am-Be) neutron source with flux (5X103 n.cm-2.s-1). The concentration values were calculated by a comparison with standard samples recommended by IAEA.The results of the measurements show that the uranium concentration in soil samples were in Thekar (16.38 ppm), AL-Basra (16.1ppm) and (0.78 ppm) in Baghdad, from the results

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Publication Date
Sat Mar 25 2023
Journal Name
International Journal Of Drug Delivery Technology
Improvement of Entrapment and Ocular Permeability of Ganciclovir Nanostructured Lipid Carriers Using Various Conditions of Preparations

Ganciclovir (GCV) is a drug included in BCS-Class III, having high solubility and low permeability. It is a synthetic acyclic nucleoside analog of 2′-deoxyguanosine, considered a potent inhibitor of herpes viruses and cytomegalovirus (CMV) infection. Herpes simplex virus (HSV) infections are very common and are also considered a major cause of corneal blindness. This study intended to advance a pioneering nanostructured lipid carriers (NLCs) system for improving the ocular permeability of GCV. Several procedures were used for the preparation. Cold homogenization, solvent injection, and emulsifi cationultrasonication methods. A mixture of palmitic acid (PA) and oleic acid (OA) as a lipid matrix, cremophore EL, and transcutol HP wer

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Publication Date
Wed Jan 01 2020
Journal Name
Journal Of The Faculty Of Languages
Publication Date
Mon Jan 30 2023
Journal Name
Iraqi Journal Of Science
Prediction of Well Logs Data and Estimation of Petrophysical Parameters of Mishrif Formation, Nasiriya Field, South of Iraq Using Artificial Neural Network (ANN)

    Petrophysical properties including volume of shale, porosity and water saturation are significance parameters for petroleum companies in evaluating the reservoirs and determining the hydrocarbon zones. These can be achieved through conventional petrophysical calculations from the well logs data such as gamma ray, sonic, neutron, density and deep resistivity. The well logging operations of the targeted limestone Mishrif reservoirs in Ns-X Well, Nasiriya Oilfield, south of Iraq could not be done due to some problems related to the well condition. The gamma ray log was the only recorded log through the cased borehole. Therefore, evaluating the reservoirs and estimating the perforation zones has not performed and the drilled well was

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