In
the first chapter, the process of desalination has been explained and its
background is also provided. It has been explained that desalination which is
based on the use of several renewable energy resources is capable of providing
freshwater in a sustainable manner. In the future, this technique is predicted
to be quite attractive in terms of costs. What would make this technique
cost-efficient is the availability of different resources. In general,
desalination costs are increased when the resources needed for powering
desalination are not available. However, when they are available easily and can
be utilized, its costs are decreased.
This technique is expected to be
effective in different regions which don't have proper infrastructure and
insufficient electricity. It has also been explained in the first chapter that wind
energy desalination is categorized into the processes or indirect and direct
collection. As the name implies, the systems of direct collection use solar
energy for the production of distillates in while two subsystems are generally
employed in the indirect collection. And since the costs of fossil fuel are
significant, there has been significant interest in the study of desalination
processes which utilize renewable sources of energy.
Meanwhile, in the second chapter,
different processes involved in desalination are explained. For instance, it
has been explained that through the use of different processes, desalination is
achieved. A phase change is generally used in industrial desalination,
specifically in the semi-preamble membrane which is used for separating routes.
There are actually different processes involved in phase change and membrane
processes. When it comes to the process of phase change, it includes multiple
wick stills, wick stills, cascaded solar stills, special stills, conventional
stills, solar stills, humidification and dehumidification, freezing, vapor
compression, multiple-effect boiling, and MSF. In the process of the membrane,
electro-dialysis, RO with energy recovery and without it, and reverse osmosis
are included.
It is the MSF that separates and evaporates
the seawater. Each and every flash utilizes the energy which is released from
the previous step. In addition to it, this process is also divided into several
steps. The part which is dealing with water flashes while others continue to
operate in the standard manner. Similar to it, the process of MEB is also
composed of different processes and steps which are generally referred to as
effects. The steam which is attained from one effect is used as a heating fluid
in the other step. And as it is being condensed, the solution is evaporated by
it. The resulting steam enters the next effect and operates in such a manner to
evaporate the solution. This process continues onward but there is an important
thing to be considered in order to make this process possible. The heated
effect must be pressurized lower than the pressure from which the steam is
exhibited.
When it comes to vapor compression,
heat recover is generally based on raising the pressure of steam. The
temperature of condensation is also raised and the steam is used for providing
energy to the same stage from which it emerges. In the very last effect, the
produced volume is passed on to the compressor where it is pressurized and its
temperature of saturation is raised before it is pushed back to the effect.
During this process, the latent heat is effectively recycled. The process of
electro-dialysis operates through the reduction of salinity as ions are transferred
from the compartment of water. This transfer is enhanced by the application of
an electrical potential difference. In addition to it, a DC electric field is
used by different processes for removing the ions of salt in the water.
Dissolved salts are included in the saline feedwater that is separated into
sodium and chlorine ions. Both of these ions are attracted to electrodes which
are charged opposite to their own.
In this third chapter, solar
distillation as the application is selected. The natural cycle of water is
mimicked by solar distillation in which the required water is heated by the sun
for creating evaporation. After the process of evaporation, water vapors are
condensed. It has also been explained in this chapter that during the phase of desalination,
renewable energy will power the whole system. It has also been determined in
this chapter that during the desalination phase, it will be quite significant
for the designer to consider different aspects. Some of these aspects include
the suitability of processes for the application of renewable energy, process
effectiveness in terms of energy consumption, the necessary amount of
freshwater, and the requirements of seawater treatment. These are some of the
factors which will have to be considered by the designer.
In the fourth
chapter, theoretical analyses have been conducted. It has been explained that
the device is equipped by the wind turbine which produces electrical energy for
charging the battery. Some of its components include water collection pump,
suction pump, and brine discharge pumps. For discharging brine, a strong pump
is utilized where the wind turbine’s vertical axis passes by the link. In the
salinity analysis, it has also been considered that salinity is while salt possesses of salinity. It has
been determined that field conditions along with the values of change significantly because of the variations
in climatic conditions. Other than these values, also vary. It means that these values will
change in accordance with the specific region in which a plant is to be
implemented.
6). Conclusions Recommendations of Wind energy (Kinetics energy) to electrical energy and
thermal energy to be used in a desalination plant
Summing
up all the discussion the research paper is about “Wind
energy (Kinetics energy) to electrical energy and thermal energy to be used in
a desalination plant”. In this paper first of all the explanation is about these
energies, and then in detailed the discussion is about the desalination plant a
shown in the above discussion.
The processes of
desalination need a large quantity of energy for achieving salt separation from
the seawater. Actually, it is quite important since it is a recurrent cost that
can be afforded by areas scarce in terms of water. The utilization of wind
energy is a reasonable technique which can be utilized towards the stressing
problems of water and energy. Despite significant research, the penetration of
desalination installations based on wind power is significantly low and during
the recent years, there has an increase in the attempts concerned with
developing medium or small scale plants of desalination powered by wind energy.
For selections application in the research report selects the wind energy
desalination shown in the above sections; in general, nature uses wind energy
desalination for producing rail which is freshwater’s main source. It can be
said that solar radiation which is falling on the sea’s surface is absorbed and
evaporation is caused by heat. Wind moves the vapor and condensation occurs
when vapors are cooled down. In this manner, rain is created. This natural
process is duplicated by various distillation systems. Additionally, in the
report which discusses desalination plants with wind and solar energies, the
Chinese long coastline can be utilized by the device along with brackish water
of northwest in the process of desalination. It is, indeed, a flexible method
of remitting water shortage. On the basis of above discussion, following
advantages are possessed by the device:
This device is generally utilized for wind and solar energies, which are
referred to as renewable energies. The device is capable of being
self-sufficient, which means that it might not an external input of energy.
It can be utilized in different types of environment. For example, it can
be utilized in the coastal area or in the northwest for the purification of
brackish water. After it is modified, it could be utilized even in the deep sea
for different floating tasks.
In general, when the atmosphere is sunny, wind is slow and minor.
However, when the wind possesses a high speed, the sunshine is not powerful.
Since both solar and wind energies are utilized, this drawback can be overcome
which makes it superior to other plants of desalination which are powered by
only solar energy.
Actually, the device size could be chosen in accordance with the
requirements.
Mainly, costs associated with desalination need maintenance cost, assets
depreciation, and energy consumption. In addition to it, costs related to energy
consumption are approximately fifty-five percent. Meanwhile, the depreciation
is twenty-four percent. Because of automatic production and lack of consumption
of energy, the costs are reduced significantly.
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