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Register a new userImproving the performance of pv pumping station from rivers using TRNSYS program
تحسين أداء محطة ضخ كهروشمسية من الأنهار باستخدام برنامج TRNSYS
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نقدّم في هذا البحث دراسة نظرية بواسطة أداة نمذجة لإمكانية تحسين أداء نظام ضخ شمسي من الأنهار باستخدام مضخة طاردة مركزية غاطسة متغيرة السرعة و باستخدام ألواح شمسية متحركة متحكَّم بها بواسطة متحكم منطقي مبرمج (plc).
We offer in this research, theory study using a modeling tool for the possibility of improving the performance of solar pumping system of rivers using submersible centrifugal pump with variable speed and moving solar panels controlled by logical microcontroller programmer (plc.).
References used
ANNAN, R. H. ; HERWIG, L. O, 1999 - Photovoltaic industry and electric utility roles in the US photovoltaic program. Colorado U.S.A, 315-320
KIM, S, 2006 - Robust maximum power point tracker using mode controller for the three-phase stand-alone photovoltaic system. Solar energy, 81, 405-414
GHONEIM, A. H,2006 - Design optimization of photovoltaic powered water pumping systems. Energy conversion and management 47,1449-1463
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Nowadays, wireless networks are spreading more and more. The majority of installed networks have become wireless due to the simplicity of installation; where they do not need an infrastructure. This does not mean that the role of the wired networks i
s being eliminated. Instead, the wireless networks
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research has become oriented to focus on the quality of service (QoS) and the integration among all these networks taking into account the Internet which is considered as the backbone for each network that wants to exchange the information with any other network all over the world. In our research, we take into account the quality of service in the broadband networks such as the WiMax network (Worldwide Interoperability for Microwave Access) with IEEE 802.16e standard which covers cities and supports the mobility. This network can be used to interconnect the rural zones with the center of cities, this kind is called point-to-point, or it can be used to cover the cities and is called point-tomultipoint,
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hotspots. However, the cells of Wi Max in the cities are called hotzones.
We propose a system model that performs the load balancing process between the base stations of WiMax network. This means, the proposed load balancing algorithm exchanges the terminals between the adjacent base stations in order to make the throughput in each base station equals to the throughput
in the others. This will improve the performance of the overall network and increase the available bandwidth for each terminal; in addition, this will increase the number of terminals which can be
served. On one side, these advantages return to the subscribers, they also return to the operator on the other side, not to mention the good renown that the operator will get from subscribers that will make more subscribers join to this network.
The proposed load balancing system can be centralized; implemented in a centralized server connected
to all base stations or distributed system implemented in each base station. The load balancing algorithm which consists of several steps is placed in a controller that achieves it. The load balancing process and the handover procedure have to be fast enough in order to prevent the adverse effect on
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The research aims to identify the electronic management role in improving the performance
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where the arcs analysis and the hydrodynamic characteristics of the propeller work in
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This Research suggests a new mechanism that aims to increase the effectiveness of
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n database
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The basic idea lies in the combination of the basic characteristics of the goal (color,
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This study aimed to answer the following main question:
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paragraphs divided into four areas: Planning, implementation of teaching,
classroom management, evaluation.) The questionnaire was distributed to
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suggested questions
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