Operation of desalination plants using renewable energies and hybrid control

Palacin, Luis; Tadeo, Fernando; Prada, César de; Salazar, Johanna

doi:10.5004/dwt.2011.1433

Cited by 26 publications

(16 citation statements)

References 17 publications

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“…Using the optimization procedure presented in Section 4 for this specific plant, the optimal tank volumes obtained are: To control the system in real-time, predictive control works each sample time, calculating new values of the manipulated variables by optimization (Palacin et al, 2009). To show the advantages of using advanced control that takes into account predictions, Fig.…”

Section: Application Resultsmentioning

confidence: 99%

Integrated design using dynamic simulation of reverse osmosis plants

Palacin¹,

Tadeo

Prada

2009

2009 IEEE International Conference on Industrial Engineering and Engineering Management

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This paper presents a proposal for optimal design of desalination plants using dynamic simulation. In particular it is shown how using integrated design based on simulation, the plant structure can be improved and a better operation point can be achieved, with significant cost reductions. This integrated design takes into account the control structure for the final plant (predictive control) and the plant objectives: fulfil the changing water demand, minimizing the energy consumption and avoiding underflows or overflows of the storage tanks, taking into account several restrictions: operation limits, physical restrictions of the pumps and the necessity of periodic cleanings.

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Section: Application Resultsmentioning

confidence: 99%

Integrated design using dynamic simulation of reverse osmosis plants

Palacin¹,

Tadeo

Prada

2009

2009 IEEE International Conference on Industrial Engineering and Engineering Management

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“…5 is proposed, that is adapted from a previous design for automated desalination in remote areas with renewable energies (see [13] for details); however, as the energy consumption of the desalination is much smaller than that of electrolyzers, the electricity consumption of the RO plant does not need to be directly balanced with the electricity production, so operation at different flows is not needed. Thus, frequency variators and automatically control dosifiers are not included in the proposed design.…”

Section: Water Productionmentioning

confidence: 99%

“…In summary, the system presented here is composed of a primary energy source, namely wave energy, which provides electricity in order to produce hydrogen using PEM electrolyzers. Water for these electrolyzers is obtained from seawater using membrane technologies based on Reverse Osmosis (RO [13],). A temporary storage system, consisting of a set of batteries for balancing production and demand is also installed.…”

Section: Introductionmentioning

confidence: 99%

Offshore hydrogen production from wave energy

Serna

Tadeo

2014

International Journal of Hydrogen Energy

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ElectrolyzersOff-grid systems a b s t r a c tThe aim of this paper is to present and evaluate a proposal for designing an off-grid offshore electrolysis plant powered by wave energy. This plant includes PEM electrolyzers, a Reverse Osmosis system to produce water with adequate conductivity, a compression unit to store the hydrogen for transport, and batteries for temporary storage of electricity for short-time balances. First, the systems that compose the proposed plant are justified and described. Then a proposal for sizing these subsystems is given, based on using buoy-measured data at the expected location and simple mathematical models of the different sections of the plant. Finally the performance of the plant in a specific location is tested in detailed by using measured data, studying the influence of sizing on the expected performance.Copyright ª 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. IntroductionThis paper refers to a renewable energy offshore plant to produce hydrogen currently under development. It is well known that hydrogen is a clean energy carrier independent of energy sources [1]. The full benefits of hydrogen will be obtained when is produced from renewable energy sources. Different renewable energy sources have already been studied for electrolyzation, such as wind [2,3] and solar energy [4,5]; the feasibility of these sources to produce hydrogen has been demonstrated, with the main drawback the variability of these sources (see, for example [5], for a detailed feasibility and economical study), and the significant cost of solar hydrogen [6]. There are some published works on using reverse osmosis to obtain hydrogen from seawater, involving wave energy for generating the energy for the process [7,8]. There are even patents available that take into account this idea [9,10]. This paper concentrates on offshore systems: the source considered in this work is wave energy as wave converters provide lower variability in the energy production in comparison with other sources [11]. Offshore power links are known to be significantly expensive [12], so the system is here assumed to be fully isolated from the grid: it is parallel to the grid independent wind-hydrogen generation presented in [6]. Thus, power consumption adapts to power production by connecting or disconnecting sections of the electrolyzation plant (following a Smart Grid approach for the microgrid in the plant), and using a temporary storage of electricity for shorttime balances and increase of autonomy (that is a relevant issue in offshore installations). Automatic cleanings and maintenance operations are scheduled in the sections that are temporarily disconnected, to improve overall efficiency. Compared with previous proposals [8e10], this paper concentrates on using commercially available components that are already tested in the marine environment. Special * Corresponding author. Tel.: þ34 983184859.E-mail addresses: alvaro.serna@autom.uva.es, alvarosercan@hotmail.com (Á . Serna).Availab...

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“…In Jordan, there is not only a water shortage problem, but also electricity is mainly produced using fossil fuels and in some cases there is a lack of electricity grid connection. Renewable energy driven desalination has been evaluated by different researchers as the most suitable option resulting from multi-criteria analysis under economic, technical, availability, reliability and environmental sustainability criteria [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Development of a decentralized innovative brackish water treatment unit for the production of drinking water

Loizidou

Μουστάκας

Malamis

et al. 2015

Desalination and Water Treatment

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A B S T R A C TAccess to water constitutes a necessary condition in order to ensure life. This paper deals with the development of an innovative energy autonomous system in order to provide drinking water in isolated small communities, using brackish water as feedstock. The case study is a small village in Jordan, where the system that was designed and constructed in Greece, was installed. The unique characteristic of the innovative system is its compact form that incorporates the reverse osmosis unit and the renewable energy production from three sources, wind, solar and water. The energy autonomous system for the production of drinking water from brackish water can be used as a decentralized unit for isolated areas where access to clean water and electricity is not available.

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Operation of desalination plants using renewable energies and hybrid control

Cited by 26 publications

References 17 publications

Integrated design using dynamic simulation of reverse osmosis plants

Integrated design using dynamic simulation of reverse osmosis plants

Offshore hydrogen production from wave energy

Development of a decentralized innovative brackish water treatment unit for the production of drinking water

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