In this paper, we present a system design of the photovoltaic
pumping to provide electrical and economic comparison between
two different energy supply systems: the first depends on the PV
panels, and the second depending on the public grid. farm area
study in the eastern countryside of Homs with the aim to supply
water for irrigation and drinking.
The susceptibility of some varieties grown locally of common bean
has been evaluated for both pseudomonas savastanoi pv
phaseolicola which causes halo blight and xanthomonas axonopodis
pv phaseoli which causes common bacterial blight. Five locally
cultivated varieties were planted in green house under natural
conditions.
The Virtualization is the main structure, and the most important component from the
others cloud computing components. Due to the features which are produced only from
the virtual environment, such as flexibility, cost, energy saving, and the optim
al usage of
the resources, most business companies and the governments look ahead for deploying
their services and applications on virtual severs instead of the physical ones. That point
made the researchers heading toward performance comparing through different virtual
environments. For reaching the best possible environment which is suitable to be used in
the cloud computing, and to get the high performance computing. We described the effect
evolution of the virtual environment on the high performance computing as a service,
through changing the type of the used virtual environment in the infrastructures. We used
the virtual environment XEN-PV ( XEN-Paravirtualization) as an infrastructures for the
high performance. Lastly, I used the XEN-HVM (XEN HardWare virtual machine ), XEN
is the main hypervisor in Citrix company and the performance has been evaluated by
using DRBD as a shared storage of virtual disk. The results of our researches proved that
both the virtual environment, and the selected clustering charts have a visible, important
role in the performance of the “The high performance computing”.
The limitations of global resources of fossil and nuclear fuel, has necessitated
an urgent search for alternative sources of energy. Therefore, a new way has to be
found to balance the supply and demand without resorting to coal and gas fuelled
ge
nerators.Environment safety has become very important for any energy system,
Increasing demand of conventional sources has further increases the need and
optimizes cost of non-conventional energy sources.
This paper has analyzed the development of a method for the mathematical
modeling of PV System.behavior of the PV Array with series resistance model are
studied in this paper. Included effects are: temperature dependence, solar radiation
change, diode ideality factor and series resistance influence,and shows the
mathematical modeling of stand-alone PV system and then compare withAnalysis
of Perturb and Observe MPPT and without MPPT simulation of photovoltaic
modules with Matlab/Simulink, And Calculate the increase in efficiency resulting
from the use of technology MPPT.
Building a photovoltaic system is the process of designing,
selecting and calculating the ratings of the equipment’s employed in
the system. This process depends on a variety of factors such as
geographical location, solar irradiation, and load re
quirements. this
paper presents a practical way to calculate the elements and
components of the Stand-Alone PV energy system, And procedure
an economic analysis for the system, will allow GUI designed by
MATLAB knowledge of these components depending on the
efficiency of the Inverter, power solar panels and capacity of
batteries in local market, taking into account the climatic factors and
hours of solar radiation in the system installation area, as well as the
cost of the system and the payback time.
The paper presents a research hybrid systems
(hydrogen-photovoltaic) for a mobile phone station in an area far from the
network or can be mobile in a desert area. This study investigates and
design a renewable energy-based energy system for a mobi
le phone
station. The proposed energy system includes of the following main
components: photovoltaic panels, fuel cells, water analyzer and batteries,
as well as a diesel generator.
The article studies the open loop
and closed loop systems for the improved converter. An improved
DC-DC boost converter is modeled and simulated using Matlab
R2013a.
The simulation and experimental results of the tow systems are
presented and co
mpared. The performance of the improved
converter is also compared with the conventional boost converter.The article studies the open loop
and closed loop systems for the improved converter. An improved
DC-DC boost converter is modeled and simulated using Matlab
R2013a.
The simulation and experimental results of the tow systems are
presented and compared. The performance of the improved
converter is also compared with the conventional boost converter.
In this paper, we have suggested the STATCOM
(STATic synchronous COMpensator) to connect PV-solar (or
wind) frame to the power system for the Hassia industrial city
which we chose as a case study. This frame will provide the city
with the required power, improve the power quality and inject
the redundant to the power system.
The objective of this research is to model the dynamic
characteristics of lead-acid batteries taking into account their
fundamental phenomena (the electric double-layer, the charge
transfer and diffusion phenomenon due to oxidation and reduction
reactions). The value of the equivalent circuit elements used in
modeling is determined experimentally using a pulsed discharge of
the battery.
Hydrogen production, vector of energy, by water electrolysis can be economically
viable by using electrical energy from renewable sources such as photovoltaic solar
energy. In this research was the study of solar hydrogen production using electroly
ser
based on polymeric exchange membrane electrolysis technology manufactured locally at
the Faculty of Technical Engineering in Tartous. The experimental studies were achieved
in two different methods: the first, direct coupling to the hydrogen electrolyser with PV
module. The second method, designed PV-electrolyzer system consists of the following
components: PV module, a maximum power point tracker (MPPT), A DC-DC converter,
which is used to operate the system at the maximum power of the PV system at all times
and to supply the necessary DC current to the electrolyzer, and tank hydrogen. The results
showed that the second method more effective and highly efficient when compared with
the first method because of the change in the intensity of solar radiation during the day.
Also, results show that some additives such as (KOH) play an important role in enhancing
the ionization process of the electrolyte liquid and improve process flow.
