Energetic performance analysis of seawater desalination with a solar membrane distillation

Miladi, Rihab; Frikha, Nader; Kheiri, Abdelhamid; Gabsi, Slimane

doi:10.1016/j.enconman.2019.02.011

Cited by 81 publications

(28 citation statements)

References 47 publications

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“…Su fuerza impulsora se origina a través de una diferencia de temperatura, en lugar de ser originada mediante fuentes mecánicas que incrementan el consumo exergético del proceso y los costes (Luo and Lior, 2016). Su baja presión de operación, de alrededor de 0.1 MPa, mucho menor que la requerida por tecnologías convencionales de desalación como laósmosis inversa 2.5-8.5 MPa (Miladi et al, 2019). Su baja temperatura de operación (menor de 90 o C), lo que permite que pueda ser fácilmente acoplada con energía solar de baja temperatura (Zaragoza et al, 2014;Andrés-Mañas et al, 2020a) y otras fuentes como calor residual (Wang and Chung, 2015).…”

Section: Descripción De La Tecnologíaunclassified

Modelado y control automático en destilación por membranas solar: fundamentos y propuestas para su desarrollo tecnológico

Gil

Roca²,

Berenguel

2020

Rev. iberoam. autom. inform. ind.

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<p class="p1">La destilación por membranas es un proceso de separación impulsado térmicamente en fase de investigación. Esta tecnología destaca principalmente por la simplicidad del proceso y su baja temperatura de operación, lo que permite que pueda ser alimentada con energía solar de media-baja temperatura. Así, la destilación por membranas se ha convertido en una solución prometedora, eficiente y sostenible para desarrollar plantas de desalación de pequeño o mediano tamaño en lugares aislados con buenas condiciones de radiación. No obstante, para que esta tecnología pueda llegar a ser implementada a escala industrial se debe seguir investigando y mejorando aspectos relacionados tanto con el diseño de las membranas y de los módulos como con la propia operación de estos. En relación con la operación, el desarrollo de modelos y técnicas de control cobran un papel fundamental. En este trabajo se presenta una revisión de las técnicas de control y modelado aplicadas en este campo, describiendo las principales metodologías empleadas y los retos futuros que quedan por abordar, incluyendo además un ejemplo ilustrativo.</p>

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Section: Descripción De La Tecnologíaunclassified

Modelado y control automático en destilación por membranas solar: fundamentos y propuestas para su desarrollo tecnológico

Gil

Roca²,

Berenguel

2020

Rev. iberoam. autom. inform. ind.

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“…The evaluation of the energy consumption of the PVD system is based on the quantities of energy consumed and the quantity of treated water. The specific energy consumption SEC, which is defined as the amount of total energy supplied (heat and electrical energy in this case) to produce a unit mass of pure water [41], was calculated to evaluate the energy performance of the PVD process as [42], SEC = STEC + SEEC (6) where STEC is the specific thermal energy consumption, or the specific heat consumption, which can be calculated from the rate of heat input into the PVD system, .…”

Section: Energy Performance Of the Pvd Systemmentioning

confidence: 99%

Produced Water Desalination via Pervaporative Distillation

Wang

Tanuwidjaja

Bhattacharjee³

et al. 2020

Water

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Herein, we report on the performance of a hybrid organic-ceramic hydrophilic pervaporation membrane applied in a vacuum membrane distillation operating mode to desalinate laboratory prepared saline waters and a hypersaline water modeled after a real oil and gas produced water. The rational for performing “pervaporative distillation” is that highly contaminated waters like produced water, reverse osmosis concentrates and industrial have high potential to foul and scale membranes, and for traditional porous membrane distillation membranes they can suffer pore-wetting and complete salt passage. In most of these processes, the hard to treat feed water is commonly softened and filtered prior to a desalination process. This study evaluates pervaporative distillation performance treating: (1) NaCl solutions from 10 to 240 g/L at crossflow Reynolds numbers from 300 to 4800 and feed-temperatures from 60 to 85 °C and (2) a real produced water composition chemically softened to reduce its high-scale forming mineral content. The pervaporative distillation process proved highly-effective at desalting all feed streams, consistently delivering <10 mg/L of dissolved solids in product water under all operating condition tested with reasonably high permeate fluxes (up to 23 LMH) at optimized operating conditions.

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“…In this MD operational mode, by using a vacuum pump, the absolute pressure inside the membrane module is reduced, the feed is boiled with lower thermal energy demand and the volume of vapor produced is increased, and thus the distillate production. Several studies were focused on the modelling and design with different membrane geometries, like flat sheet [28,29] and hollow fiber [30].…”

Section: Introductionmentioning

confidence: 99%

Application of solar energy to seawater desalination in a pilot system based on vacuum multi-effect membrane distillation

et al. 2020

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The evaluation of a novel solar seawater desalination system implemented at the University of Almeria (Spain) is presented. It integrates a solar thermal field based on static collectors and a thermal desalination system based on the vacuum multieffect membrane distillation (V-MEMD) technology. The V-MEMD unit has a particular innovation to increase its thermal performance, using a seawater flow to condense the steam and preheat the feed. One of the main strengths of the system is that thermal energy can be delivered at a stable temperature to the V-MEMD module, even with variable solar radiation. A simulation analysis based on a quasidynamic model was performed to evaluate the distillate production profile and the operating time during a typical year considering different temperature setpoints at the inlet of the membrane module (60, 70, and 80 ºC). The total volume of distilled water generated ranged from 41.7 to 70.5 m 3 , depending on the setpoint. The MD unit produced almost uniformly along the year, with an average flux of (5.5 ± 1) l h-1 m-2 at the maximum setpoint, which was proved the most favourable. The benefits of the thermal storage system for minimizing the effect of disturbances in solar radiation were also demonstrated.

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Energetic performance analysis of seawater desalination with a solar membrane distillation

Cited by 81 publications

References 47 publications

Modelado y control automático en destilación por membranas solar: fundamentos y propuestas para su desarrollo tecnológico

Modelado y control automático en destilación por membranas solar: fundamentos y propuestas para su desarrollo tecnológico

Produced Water Desalination via Pervaporative Distillation

Application of solar energy to seawater desalination in a pilot system based on vacuum multi-effect membrane distillation

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