Analysis, experiment and application of a power-saving actuator applied in the piston type energy recovery device

Song, Daiwang; Wang, Yue; Xu, Shichang; Gao, Jianpeng; Ren, Yafei; Wang, Shichang

doi:10.1016/j.desal.2015.01.035

Cited by 24 publications

(5 citation statements)

References 26 publications

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“…A force greater than the osmotic pressure is exerted through the semipermeable membrane in the opposite direction to the osmosis process. Using this method, it is possible to separate the water on one side of the membrane (concentrate) from a dilute solution low in dissolved solids on the other side of the membrane (permeate) [11,12]. The membrane is a key element in reverse osmosis, as it is the device used to treat and obtain drinking water.…”

Section: Introductionmentioning

confidence: 99%

“…The membrane is a key element in reverse osmosis, as it is the device used to treat and obtain drinking water. This process is based on forcing the passage of water and trapping impurities [12][13][14][15]. The objective of this study was to add renewable energy to a desalination plant that used reverse osmosis technology, motivated by the fact that the carbon footprint of the Canaries, where the plant was located, is much higher than that of mainland Spain.…”

Section: Introductionmentioning

confidence: 99%

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An Assessment of Renewable Energies in a Seawater Desalination Plant with Reverse Osmosis Membranes

León

Ramos

2021

Membranes

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The purpose of our study was to reduce the carbon footprint of seawater desalination plants that use reverse osmosis membranes by introducing on-site renewable energy sources. By using new-generation membranes with a low energy consumption and considering wind and photovoltaic energy sources, it is possible to greatly reduce the carbon footprint of reverse osmosis plants. The objective of this study was to add a renewable energy supply to a desalination plant that uses reverse osmosis technology. During the development of this research study, photovoltaic energy was discarded as a possible source of renewable energy due to the wind conditions in the area in which the reverse osmosis plant was located; hence, the installation of a wind turbine was considered to be the best option. As it was a large-capacity reverse osmosis plant, we decided to divide the entire desalination process into several stages for explanation purposes. The desalination process of the facility consists of several phases: First, the seawater capture process was performed by the intake tower. This water was then transported and stored, before going through a physical and chemical pre-treatment process, whereby the highest possible percentage of impurities and organic material was eliminated in order to prevent the plugging of the reverse osmosis modules. After carrying out the appraisals and calculating the amount of energy that the plant consumed, we determined that 15% of the plant’s energy supply should be renewable, corresponding to 1194 MWh/year. As there was already a wind power installation in the area, we decided to use one of the wind turbines that had already been installed—specifically, an Ecotecnia turbine (20–150) that produced an energy of 1920 MWh /year. This meant that only a single wind turbine was required for this project.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Assessment of Renewable Energies in a Seawater Desalination Plant with Reverse Osmosis Membranes

León

Ramos

2021

Membranes

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“…This makes it possible to test its operation on a small scale and then take it to a large scale in the plant, minimising the risk of not meeting the planned objectives. If we do not have such a pilot plant, the cost of which for large seawater plants is not significant compared to the investment that would have to be made in membranes in the installation, we can make a mistake if we choose the wrong membrane for our type of water without first having tested it in situ and lose a large amount of money [55][56][57][58][59].…”

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confidence: 99%

The Use of Pareto Analysis and Pilots Testing with New Generation RO Membranes to Take Decision for the Improvement of the Energy Efficiency

Muguirrima,

Chirinza,

Zerpa

et al. 2024

Preprint

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In this study is considered the design and implementation of pilots in desalination plants, in a systematic way, to evaluate energy improvements in water desalination processes. Pilot tests with the latest generation of reverse osmosis membranes in large desalination plants are becoming increasingly common, as small-scale experiments are carried out on the operation of new generation membranes with better salt rejection and lower energy consumption, to achieve the best water quality required for each case at the lowest possible cost. In this way, pilot tests are being carried out before the decision is made whether or not to change the reverse osmosis membranes, as this represents a significant investment and we minimize the risk of making a mistake in order to ensure the best results in terms of energy consumption, operating costs and reducing the environmental impact while complying with the required water quality. In this case, the Pareto analysis is used to highlight the 2 or 3 most significant causes whose treatment affects more than 80% of the possible energy improvement to be implemented. In this sense, figure 3 below shows the Pareto diagram for the energy improvement of N plants in a given territory. A series of factors that can affect this energy improvement have been numbered from 1 to 7, such as the seawater intake, the decision on the membranes, the energy recuperators, the high-pressure pump, the decisions on the pre-treatment, the feed pump or the post-treatment. The Pareto diagram has been studied at territorial level with a total of 180 seawater desalination plants. The novelty of this article is to apply Pareto diagram to a study of a total of 180 seawater desali-nation plants at territorial level in Canary Islands.

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“…Sun等人 [26] 开发了一种流体切换器(fluid switcher)的能量回收装置, 在以水作为工质进行实验的情况下, 流体切换器的水力回收效率可达76.83%, 而在仿真RO海水淡化系统上的初步实验表明其能量回收率高达95.9% [27] . Song等人 [28,29] 开发了活塞式往复切换器 , 在 6.5 MPa和 30 m 3 /h的RO系统的实验条件下得到了高达98%的能量回收率. Al-Hawaj [30] [31] .…”

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State-of-the-art of R&D on seawater desalination technology

Zheng¹,

Li²,

Li³

et al. 2016

Chin. Sci. Bull.

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Analysis, experiment and application of a power-saving actuator applied in the piston type energy recovery device

Cited by 24 publications

References 26 publications

An Assessment of Renewable Energies in a Seawater Desalination Plant with Reverse Osmosis Membranes

An Assessment of Renewable Energies in a Seawater Desalination Plant with Reverse Osmosis Membranes

The Use of Pareto Analysis and Pilots Testing with New Generation RO Membranes to Take Decision for the Improvement of the Energy Efficiency

State-of-the-art of R&D on seawater desalination technology

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Analysis, experiment and application of a power-saving actuator applied in the piston type energy recovery device

Cited by 24 publications

References 26 publications

An Assessment of Renewable Energies in a Seawater Desalination Plant with Reverse Osmosis Membranes

An Assessment of Renewable Energies in a Seawater Desalination Plant with Reverse Osmosis Membranes

The Use of Pareto Analysis and Pilots Testing with New Generation RO Membranes to Take Decision for the Improvement of the Energy Efficiency

State-of-the-art of R&amp;D on seawater desalination technology

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Product

Resources

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State-of-the-art of R&D on seawater desalination technology