Experimental investigation of a reverse osmosis desalination system directly powered by wave energy

Mi, Jia; Wu, Xian; Capper, Joseph; Li, Xiaofan; Shalaby, Ahmed; Wang, Ruoyu; Lin, Shihong; Hajj, Muhammad R.; Zuo, Lei

doi:10.1016/j.apenergy.2023.121194

Cited by 18 publications

(3 citation statements)

References 41 publications

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“…However, there are problems associated with this process such as high energy consumption (Mi et al, 2023), environmental impact (Jalili et al, 2023), biofouling (Armendáriz-Ontiveros et al, 2022) and concentration polarization in membrane modules. Concentration polarization (CP) is defined as the deposition of salts on the membrane surface Dévora-Isiordia et al (2023), presents an illustration about the CP that goes according to the previous definition (see Figure 1), due to an increase in permeate flux with respect to the filtration area, reducing the observed salt rejection which decreases the efficiency of the system (Fan, 2018;Armendáriz-Ontiveros et al, 2022).The PC phenomenon occurs naturally since the function of the membrane is to retain salts from brackish or marine water bodies, however when this exceeds the value of 1.2 the desalination process yields are affected this according to Kucera (2015).…”

Section: Introductionmentioning

confidence: 99%

Determination of the concentration polarization in a reverse osmosis plant to desalinate sea water

Dévora-Isiordia,

Villegas-Peralta,

Piña-Martinez

et al. 2023

RMIQ

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Section: Introductionmentioning

confidence: 99%

Determination of the concentration polarization in a reverse osmosis plant to desalinate sea water

Dévora-Isiordia,

Villegas-Peralta,

Piña-Martinez

et al. 2023

RMIQ

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“…For many coastal locations, ocean wave energy is a substantial resource but is challenging to economically convert into electricity. Instead, several groups have considered using this form of energy to power seawater desalination plants-especially reverse osmosis (RO) desalination [1][2][3][4][5][6][7][8][9][10][11][12]. This application of ocean wave energy is estimated to be more economical than the production of electrical grid power [13].…”

Section: Introductionmentioning

confidence: 99%

“…Hydraulic power take-offs (PTOs) that use filtered seawater as the working fluid have been considered for a more direct coupling of the RO process to the wave energy harvesting process [2,4,5,12,[15][16][17][18]. This avoids power conversion losses that would otherwise come with the intermediate conversion of power to and from electricity.…”

Section: Introductionmentioning

confidence: 99%

A Comparison of Power Take-Off Architectures for Wave-Powered Reverse Osmosis Desalination of Seawater with Co-Production of Electricity

Simmons,

Van de Ven

2023

Energies

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Several power take-off (PTO) architectures for wave-powered reverse osmosis (RO) desalination of seawater are introduced and compared based on the annual average freshwater production and the size of the components, which strongly relate to the costs of the system. The set of architectures compared includes a novel series-type PTO architecture not previously considered. These seawater hydraulic PTO architectures are composed of a WEC-driven pump, an RO module, an intake charge pump driven by an electric motor, and a hydraulic motor driving an electric generator for electric power production. This study is performed using an efficient two-way coupled steady-state model for the average performance of the system in a given sea state, including freshwater permeate production, electric power production, and electric power consumption. A multi-objective design problem is formulated for the purposes of this comparative study, with the objectives of maximizing annual freshwater production, minimizing the displacement of the WEC-driven pump, and minimizing the installed RO membrane area. This establishes a framework for comparison in the absence of a mature techno-economic model. The requirement that the system produces enough electric power to meet its consumption is applied as a constraint on the operation of the system. The oscillating wave surge converter Oyster 1 is assumed as the WEC. Weights on performance of the system in a given sea state are based on historical data from Humboldt Bay, CA. This study finds that (1) architectures in a series configuration allow for a reduction in the WEC-driven pump size of 59–92% compared to prior work, (2) varying the displacement of the WEC-driven pump between sea conditions does not provide any significant advantage in performance, and (3) varying the active RO membrane area between sea condition offers improvements between 7% and 41% in each design objective.

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Performance evaluation and mathematical modeling of reverse osmosis membrane desalination unit

Alzahmi,

Alswat,

El-Askary

et al. 2024

J Therm Anal Calorim

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Experimental investigation of a reverse osmosis desalination system directly powered by wave energy

Cited by 18 publications

References 41 publications

Determination of the concentration polarization in a reverse osmosis plant to desalinate sea water

Determination of the concentration polarization in a reverse osmosis plant to desalinate sea water

A Comparison of Power Take-Off Architectures for Wave-Powered Reverse Osmosis Desalination of Seawater with Co-Production of Electricity

Performance evaluation and mathematical modeling of reverse osmosis membrane desalination unit

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