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Article
Digitally Link Distributed and Intermittent Renewable Generation to Flexible Demand

Journal: Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية ISSN: 18132065 23091673 Year: 2019 Volume: 15 Issue: 3 Pages: 3-7
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة

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Abstract

The first phase of a new £28.5 million project to create a Virtual Energy System (VES) in Orkney, Scotland, has been launched to digitally link distributed and intermittent renewable generation to flexible demand.


Article
Renewable energy sources
مصادر الطاقة المتجددة- حقائق الحاضر وخيارات المستقبل

Author: ثائر محي الدين عزت
Journal: journal of Economics And Administrative Sciences مجلة العلوم الاقتصادية والإدارية ISSN: 2227 703X / 2518 5764 Year: 2011 Volume: 17 Issue: 64 Pages: 195-178
Publisher: Baghdad University جامعة بغداد

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Abstract

.ABSTRACTRenewable energy sources - realities of the present and future options Many of the directories indicate that the global energy system begin with a period of transition from total dependence on fossil energy sources, particularly oil, Into a new era in which renewable energy sources play an important role in meeting the growing needs of energy demand. There are many factors that will contribute to the strengthening of this trend towards transformation, which also will decide how quickly this transformation of renewable energy systems effectively in the global system of energy demand. These factors, In brief: the size of environmental pollution and climatic changes resulting from the excessive use of fossil fuels, the size of reserves of fossil fuels and the amount of new additions to her and to oil in particular, Amount of support and funding for renewable energy sources and, finally, other political factors linked to the concept of energy security, especially for the major industrialized importing oil countries. The disposition of any country requires to keep pace with these changes and seek to support efforts to introduce renewable energies within the system of energy production gradually so as not to lag behind in global development

تشير العديد من الدلائل إلى أن نظام الطاقة العالمي بدء بمرحلة من التحول من الاعتماد الكلي على مصادر الطاقة الاحفورية وخاصة النفط , إلى عهد جديد يكون فيه لمصادر الطاقة المتجددة دور مهم في تلبية الاحتياجات المتزايدة للطلب على الطاقة .
توجد العديد من العوامل التي يمكن أن تساهم في تعزيز هذا الاتجاه نحو التحول, والتي أيضا ستقرر مدى سرعة هذا التحول, أي الفترة الانتقالية اللازمة لإدخال تقنيات نظم الطاقة المتجددة بشكل مؤثر في النظام العالمي للطلب على الطاقة.
إن هذه العوامل , وبشكل مختصر : حجم التلوث البيئي والتغيرات المناخية الناتجة عن الإفراط في استخدام الوقود الاحفوري , حجم احتياطيات الوقود الاحفوري ومقدار الإضافات الجديدة لها والنفطية منها بشكل خاص, مقدار الدعم والتمويل المقدم لمصادر الطاقة المتجددة , وأخيرا عوامل سياسية أخرى ترتبط بمفهوم امن الطاقة , وخاصة بالنسبة للدول الصناعية الكبرى المستوردة للنفط .
إن التصرف الرشيد لأي دولة يقتضي أن تواكب هذه المتغيرات وان تسعى بشكل جاد لدعم الجهود الرامية لإدخال نظم الطاقة المتجددة ضمن منظومة إنتاج الطاقة لديها تدريجياً حتى لا تتخلف عن ركب التطور العالمي.


Article
The Parameters Change with Different Operation Conditions of Solar Chimney Power Plant Model

Authors: Rafid M. Hannun --- Salih E.Najim --- Mohammed H. Khalaf
Journal: Basrah Journal for Engineering Science مجلة البصرة للعلوم الهندسية ISSN: Print: 18146120; Online: 23118385 Year: 2014 Volume: 14 Issue: 2 Pages: 189-199
Publisher: Basrah University جامعة البصرة

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Abstract

The solar chimney power plant is one of the modern models studied on the world. This study presents an engineering and numerical analysis of solar chimney with different parameters. Also, it studies the comparison of two collector base shapes(circular and hexagonal) depend on the five storage material types and their effects on the heat transfer, velocity, efficiency, etc. inside the solar chimney system by considering the solar array intensity equations and the energy equation to calculate the heat transferred and stored by applying the laws of CFD. The finite volume method is used to analyze the geometry physical model by applying a commercial Fluent 6.3 code with Gambit 2.3. The obtained results show that the efficiency of solar chimney is increased by increasing the area of solar glassed collector with circular base shape than the others of polygonal or rectangular one because the circular was covered large area of system. So, the circular ground collector shape for thermal storage is the favour because it is the better to increase the velocity of entering air and to increase the efficiency of turbine. In addition to that the black Pebble storage plate is the better material for heat storage which is convected to air passed for operation of turbine than the other types aluminum, tar, copper and steel seriously.Keywords: solar energy, power tower, power chimney, renewable.


Article
Design of Maximum power Tracking System by Automatic Control of Solar Cell Panel to the Sun Direction
تصميم منظومه سيطره اوتوتيكي لخلايا الطاقة الشمسية باتجاة اشعة الشمس للحصول على اكبر مقدار من الطاقة.

Author: Kader H.A. Al-Shara
Journal: JOURNAL OF MADENAT ALELEM COLLEGE مجلة كلية مدينة العلم الجامعة ISSN: 2073,2295 Year: 2018 Volume: 10 Issue: 1 Pages: 71-83
Publisher: City College of Science University كلية مدينة العلم الجامعة

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Abstract

Renewable energy is an area of significant investment and importance for future generations. The basis of this project is to design a new automatic control system for solar panel that tracking maximum power tracking according to the direction of sun ray. This project is an analysis of maximum power that can generate from the solar panel. This project needed to investigate the system parameter that affected the input sun ray to the solar panel. The system parameter that needs to investigate is weather, cell type, number of cells, temperature and the intensity of the sun. The system parameter is important to create the maximum power that can be generated by the design solar panel. In this paper, the main purpose is to design a system which controls the direction of the solar panel base on the sun direction and the main system parameter is the intensity of sun in daily mode. The system uses the motor type for controlling the angle of the solar panel base on the maximum intensity of sun ray. The validity of this proposed system achieved the maximum power of 101 Watt compared with the conventional types.

الطاقه المتجدده تعتبر من الفروع الحديثه والاستثمارية المهمه لمستقبل الطاقه. البحث المقدم يقترح تصميم منظومة سيطرة جديدة للخلايا الشمسيه التى باستطاعتها مواكبة حركه الشمس تزامنيا. و تم التطرق للعناصر المهمه التى تتحكم في دوران خلايا الشمس باتجاه اشعة الشمس الساقطة. علاوة الى ذلك تم اضافه عناصر ثانويه لمحاكاه عمل النظام الحقيقي كحالة الطقس , عدد الخلايا , نوع الخلية الشمسية, درجة الحراره, وكمية اشعة الشمس الساقطة. العناصر التى تم تضمينها تعتبر مهمه للحصول على اكبر مقدارمن الطاقة الكهربائيه المتولدة من خلال هذا التصميم. في هذا البحث تم التطرق ايضا على نظام السيطره لمواكبه حركة الخلايا الشمسيه تزامنيا مع حركه واتجاه الشمس باستخدام ماطور احادي الطور لليسطره على زوايه انحراف الخلايا الشمسية تزامنيا مع حركه اكبر كمية لاشعة الشمس الساقطة. ان موثوقيه المنظومة المقترحه حققت مقدار طاقه قدره 101 واط مقارنه بالنماذج االاخرى.


Article
New Design of lithium-ion Battery to Enhance Battery Performance for Solar Grid Storage

Journal: Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية ISSN: 18132065 23091673 Year: 2019 Volume: 15 Issue: 3 Pages: 8-10
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة

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Abstract

Designing a lithiumion battery that can charge within minutes yet work at a high capacity is possible, according to a research paper from Rensselaer Polytechnic Institute (RPI) recently published in Nature Communications. This development shows the potential to enhance battery performance for solar grid storage, consumer electronics, and electric vehicles.


Article
Development of an Environmentally Friendly Method to Recover Valuable Metals from used Batteries

Journal: Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية ISSN: 18132065 23091673 Year: 2019 Volume: 15 Issue: 3 Pages: 11-14
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة

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Abstract

Scientists at the Rice University have truly found a way to deal with the excess amount of used lithiumion batteries left behind—a consequence of the growing demand for cellphones, electric vehicles, and other electronic devices.


Article
POWER GENERATION FROM “PRO” PROCESS USING FLAT SHEET TFC–ULP KOCH MEMBRANES

Authors: Saif T. Manji --- Adel O. Sharif --- Adil Al–Hemiri عادل احمد عوض
Journal: Iraqi Journal of Chemical and Petroleum Engineering المجلة العراقية للهندسة الكيمياوية وهندسة النفط ISSN: 19974884/E26180707 Year: 2010 Volume: 11 Issue: 3 Pages: 47-54
Publisher: Baghdad University جامعة بغداد

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Abstract

The production of power using the process of pressure–retarded osmosis (PRO) has been studied both experimentally and theoretically for simulated sea water vs. river water and deionized water under two cases: the first is for simulated real conditions of sea water and river water and second under low brine solution concentration to examine the full profile of the power- pressure. The influence of concentration polarization (CP) on water flux has been examined as well.


Article
Adaption for the Wind Energy by using the Solar Nozzle
التكيّف لطاقةِ الرياح بإستعمال الخرطومِ الشمسيِ

Author: Tawfeeq Wesmi M. Salih
Journal: Journal of College of Education مجلة كلية التربية ISSN: 18120380 Year: 2011 Issue: 5 Pages: 21-34
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

A new method has been proposed for conversion the wind energy into a kinetic energy using the hybrid effect of nozzle and solar energy. As the air flows through the horizontal nozzle it accelerates because of the narrowing constriction. Heat energy acquired from the wall is converted into the kinetic energy of flow. Critical dimensions are calculated for the convergent nozzle that made of steel. This study focuses up on the benefits of using solar nozzle on the wind energy. The study is an attempt to raise the local wind velocity (3 m/sec) to a high velocity gives good energy allowed the wind plant to generate power, on other words in order to increase the efficiency of the plant. From the obtained results, it is observed that the velocity of wind increased by the increment of heat gain and decrement of the area. The velocity value in the case of heat added is reached to (50 m/sec), while in the case of no heat transferred is about (48 m/sec). Calculation indicates that maximum heat gained could give (57 KW) output power.

تم في هذا البحث تطبيق طريقة جديدة في تحويل طاقة الرياح الى طاقة حركية مستفاد منها بأستخدام خرطوم شمسي معدني موضوع بشكل افقي. حيث يتم زيادة سرعة الرياح الموقعية الى السرعة اللازمة لانتاج طاقة كهربائية اي زيادة كفاءة محطة الرياح. تزداد الكفاءة اعتمادة على شكل الخرطوم وعلى تجميع الطاقة الشمسية المسلطه عليه، ولحالة فرض سرعة دخول الهواء (3 m/sec) تكون سرعة خروج الهواء (48 m/sec) في حال عدم وجود الخرطوم بينما تكون سرعة خروج الهواء (50 m/sec) في حال وجود الخرطوم للنموذج الافتراضي المطبق. في حالة تطبيقه عملياُ بالامكان الحصول على طاقة حركية مقدارها (57 KW).


Article
Optimal Estimation of Critical Angle for the Wind Power (Energy) to Generate High Electrical Power in Baghdad City
تخمين الزاوية الحرجة المثلى لطاقة الرياح لتوليد أعلى قدرة كهربائية في مدينة بغداد

Authors: Abdulkhaliq A. Al-Naqeeb --- Qassim M. Wadi --- Osama T. Al-Taai
Journal: Journal of College of Education مجلة كلية التربية ISSN: 18120380 Year: 2011 Issue: 6 Pages: 448-466
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The wind energy is regarded one of the important renewedenergies invested by man from ancient time to execute some of hisworks and he is still challenging and continuing in finding the besttechniques to exploit as much as he could and consider them a newsource for the renewed energy to meet his requirements. The aimof the research is to estimate the usability of the wind energy to gethigh efficient of electrical power in Baghdad city through theanalyzing the impact of some explanative variables ( MeanTemp. , High Temperatures , Time of High TemperaturesRegistration , Low Temperatures , Time of Low TemperaturesRegistration , Heat Degree Days , Cool Degree Days , Rain ,Average Wind Speed , High Wind Speed , and Time of High Wind Speed Registration ) on the function of Dom. Dir. in thestudied area in period ( 1/1/2009 – 31/12/2009 ) throughtransforming in angler form on the circumference of thepresumptive circle starting with zero degree in front of the northpole with a clockwise to enabling of applied the Model ofpredicting optimal critical angle estimate/or obtaining the bestelectrical power through using the Multiple Linear RegressionModel , which is for the first time as far ( as we know ). Somerecommendations and suggestions were given.


Article
Mathematical simulation of wind speed as a renewable energy in Nassiriya district : utilization for electricity product

Author: Abdul-Kareem Mahdi Salih Physics Department, College of science , Thi-Qar university
Journal: Univesity of Thi-Qar Journal مجلة جامعة ذي قار العلمية ISSN: 66291818 Year: 2012 Volume: 7 Issue: 4 Pages: 1-12
Publisher: Thi-Qar University جامعة ذي قار

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Abstract

AbstractThe data of the wind speed in Nassiriya district (south of Iraq) has been measured in four years ago (2007-2010) at 10 m altitude and then, simulated mathematically to study and predict the important wind energy dynamic parameters as a necessary step before utilization the wind for electricity production job, as a knowledge no study will be focus on renewable sources ( specifically wind energy) in Nassiriya district. The study shows that, the wind speed in Nassiriya district is suitable for electricity production if the tower of wind station at least ( 34m) altitude from the earth surface and (10 m) for rotor radius at least .Key words: Physics energy, renewable

:-تم في هذا البحث محاكاة سرع الرياح في مدينت الناصرريت لعورما 7000 7002 ( مر -خرلاب نرمرامس باسرمني ورد فري هرذا البحرث ى لر ل رفرت مرد إمكاميرت تمظيفهرا فري إمترا الطاقرتالكهرنائيرت ىمرا هري الوررىص اى التمراميم ال طورض لهرا كخطرمة لررىتيت قبره الردخمب فري تنفيرذ هرذهال شاتيع بيث لم تتمفر يرت رتاسرت سرانفت فري هرذا ال لراب لو دينرت ال رذكمتة وورض برد وورم البابرث.خوررا البحررث إلررض إ سررروت الريرراح فرري مدينررت الناصررريت تكررم مشررل ت لتمظيفهررا متررا الطاقررتالكهرنائيت وندما يكم اتتفاع نر ال حطت 43 متر في الحد الأرمض ىممف قطرر ال رىبرت 00 متررفي بده الأرمض.

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