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Report on Discussion of the results of several renewable energy resources

Category: Electrical Engineering Paper Type: Report Writing Reference: IEEE Words: 1450

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.

References of Wind energy (Kinetics energy) to electrical energy and thermal energy to be used in a desalination plant

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Openei.org, "Wind energy," 20 November 2018. [Online]. Available: https://openei.org/wiki/Wind_energy.

[2]

Q. Ma, "Wind energy technologies integrated with desalination systems: Review and state-of-the-art," Desalination,, vol. 277, no. 1-3, p. 274–280, 2011.

[3]

D. Mentis and e. al, "Desalination using renewable energy sources on the arid islands of the South Aegean Sea," Energy , vol. 94, p. 262–272, 2016.

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E. Tzen, " Wind-Powered Desalination—Principles, Configurations, Design, and Implementation.," in Renewable Energy Powered Desalination Handbook, 2018, p. 91–139.

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U. Caldera and e. al, "Local cost of seawater RO desalination based on solar PV and wind energy: A global estimate," Desalination, vol. 385, p. 207–216, 2016.

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F. Latorre and e. al, "F.J.G. Latorre, S.O.P. Báez, A.G. Gotor, Energy performance of a reverse osmosis desalination plant operating with variable pressure and flow,," Desalination, vol. 366, p. 146–153., 2015.

[7]

V. Belessiotis and e. al, "Solar Distillation—Solar Stills," in Thermal Solar Desalination, 2016, p. 103–190..

[8]

S. Kalogirou, "2005, Seawater desalination using renewable energy sources,," Energy & Combustion Science , vol. 31, pp. 242-262, 2005.

[9]

EA-ETSAP and IRENA, "Water Desalination Using Renewable Energy," ENERGY TECHNOLOGY SYSTEM ANALYSIS PROGRAMME, 2013.

[10]

A. Subraman, "Energy minimization strategies and renewable energy utilization for desalination: A review," Water Research, vol. 45, no. 5, p. 1907–1920, 2011.

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U. Caldera, "Caldera, U., Bogdanov, D., & Breyer, C. (2016). Local cost of seawater RO desalination based on solar PV and wind energy: A global estimate.," Desalination, vol. 385, p. 207–216., 2016.

[12]

H. Chen and et al, "Chen, H., Ye, Z., & Gao, W. (2013). A desalination plant with solar and wind energy. IOP Conference Series: 072003. doi:10.1088/1757-899x/52/7/072003," Materials Science and Engineering, vol. 52, no. 27, 2013.

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S. A. Kalogirou, , "(2014). Solar Desalination Systems," Solar Energy Engineering,, p. 431–479, 2014.

[14]

Y. Cerci , "Exergy analysis of a reverse osmosis desalination plant.," Desalination, vol. 143, no. 3, p. 257–266., 2002.

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S. KUMAR, "Estimation of convective mass transfer in solar distillation systems," Solar Energy, 57(6),, vol. 57, no. 6, p. 459–464., 1996.

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