Comprehensive study on vacuum humidification-dehumidification (VHDH) desalination

Rahimi-Ahar, Zohreh; Hatamipour, Mohammad Sadegh; Ghalavand, Younes; Palizvan, Alireza

doi:10.1016/j.applthermaleng.2020.114944

Cited by 23 publications

(9 citation statements)

References 30 publications

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“…In an experimental comparison of a single-stage and three-stage vacuum humidification-dehumidification (VHDH) system at sub-atmospheric pressure conditions, Rahimi et al ( 2020 ) found that the salinity change had no discernible impact on the performance of the MS-VHDH system. The findings indicated that the desalination rate was typically reduced by around 4% as a result of salinity change.…”

Section: Effect Of Feed Water Salinity On the Performance Of Hdh Systemmentioning

confidence: 99%

“…Rahimi et al ( 2020 ) studied experimentally and thermodynamically a solar-assisted pilot-scale vacuum humidification-dehumidification (VHDH) desalination system. The findings indicated that increasing the salt of the water will increase its viscosity and surface tension while lowering its latent heat of vaporization.…”

Section: Effect Of Feed Water Salinity On the Performance Of Hdh Systemmentioning

confidence: 99%

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Salinity impacts on humidification dehumidification (HDH) desalination systems: review

Nabil,

Abdalla,

Mansour

et al. 2023

Environ Sci Pollut Res

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The use of humidification-dehumidification water desalination technology has been shown to be a practical means of meeting the demand for freshwater. The aim of this review is to investigate the impact of salinity on HDH techniques that have various benefits in terms of both economics and the environment, including the capacity to operate at low temperatures, utilize sustainable energy sources, the need for low maintenance, and straightforward construction requirements. Also, in this review, it is observed that the HDH system’s components are strong and capable of treating severely salinized water. It can treat water in an appropriate way than other desalination technologies. This technology has recently been commercialized to treat highly salinized generated water. However, more research is needed to determine how salinity affects HDH productivity. According to several research investigations, while the specific thermal energy consumption increased considerably and the productivity of water per unit of time decreased significantly as the salt mass percentage grew, the purity of clean water did not suffer. The rejected brine must be reduced by increasing the total water recovery ratio in the HDH system. Through this review, it was found that brine control is becoming increasingly important in the water processing industry. ZLD systems, which aim to recover both freshwater and solid salts, can be a viable replacement for disposal methods. Finally, through this reviewer, it was concluded that HDH desalination systems may operate with extremely saline water while increasing salinity has a significant influence on system performance.

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Section: Effect Of Feed Water Salinity On the Performance Of Hdh Systemmentioning

confidence: 99%

Section: Effect Of Feed Water Salinity On the Performance Of Hdh Systemmentioning

confidence: 99%

Salinity impacts on humidification dehumidification (HDH) desalination systems: review

Nabil,

Abdalla,

Mansour

et al. 2023

Environ Sci Pollut Res

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“…The study indicated that adding Kaolin to tap water improved the system's efficiency from 8.7% to 61% in the tests conducted in Jordan. Rahimi-Ahar et al (2020) evaluated experimentally and theoretically the performance of vacuum HDD systems. The maximum desalination rate of 1200 mL/h is achieved under the following conditions: the open area of the solar water heater is 50 kPa, the humidifier pressure is 50 kPa, the solar intensity is 1123 W/ m 2 , and the volume of water flow is 18 L h -1 .…”

Section: Introductionmentioning

confidence: 99%

Simulation of Desalination of Salt Water Comprising Polypropylene Hollow Fibre Membranes

Elewa

Ramadan

El-Emam³

et al. 2023

Misr Journal of Agricultural Engineering

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The problem of desalination systems using advanced hollow fibre (HF) membranes were thoroughly investigated. Humidification air is cooled by heat transfer in the dehumidification chamber, which condenses the water vapour and produces high-quality, fresh drinking water. A mathematical approach was conducted, and a simulation programme (model) was developed for the system. The performance of the HF membranes was assessed using different mass flows of salt water and air to optimise the system's operating performance. An experimental setup was prepared to test the effect of changing the operating parameters on the produced fresh water's flux. The produced flux ranged from 2.36-10.6 kg h -1 m -2 at 40-70 o C, respectively. The comparisons between the simulation results and the experimental setup were in good agreement, and the water quality analysis showed that the obtained values were within the World Health Organization's drinking water guidelines.

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“…Though, the optimization of RO desalination systems are essential [8]. Exergy Analysis is an accepted and useful analytical approach for energy optimization of the desalination systems [9]. The analysis of the real thermodynamic inefficiencies in a process is valuable for enhancing an energy-intensive operation [10].…”

Section: Introductionmentioning

confidence: 99%

Proposing an Ultrapure Water Unit Coupled to an Existing Reverse Osmosis Desalination Plant and its Exergy Analysis

MAQBALİ

Rahimi-Ahar

Mousa

et al. 2022

International Journal of Thermodynamics

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In this study, three desalination exergy analysis models including the Cerci et al. model (Model A), Drioli et al. model (Model B) and electrolyte solution model (Model C), were developed on an existing reverse osmosis (RO) desalination plant in Oman (Plant ALG). A modified ultrapure water (UPW) unit fed by Plant ALG has also been proposed (Plant A) based on the technology used in a UPW unit operated under the climate of Europe and fed by European river water (Plant B). The most suitable exergy model for characterizing the proposed UPW production plant was used. Model C was found to be the most proper model among its counterparts. It reflected the electrolytic behavior of the relevant streams and considered as the appropriate model. The major exergy destruction sites were also identified, and the exergy efficiency was calculated. The electro-de-ionization (EDI) and the RO unit were the highest exergy destructive components in Plant A.

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Comprehensive study on vacuum humidification-dehumidification (VHDH) desalination

Cited by 23 publications

References 30 publications

Salinity impacts on humidification dehumidification (HDH) desalination systems: review

Salinity impacts on humidification dehumidification (HDH) desalination systems: review

Simulation of Desalination of Salt Water Comprising Polypropylene Hollow Fibre Membranes

Proposing an Ultrapure Water Unit Coupled to an Existing Reverse Osmosis Desalination Plant and its Exergy Analysis

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