Mechanical vapor compression desalination systems — A case study

Aly, Narmine H.; El-Figi, Adel K.

doi:10.1016/s0011-9164(03)00444-2

Cited by 95 publications

(25 citation statements)

References 3 publications

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“…MVC has been modeled in detail and analyzed by various researchers [4,[9][10][11][12]. Mistry et al [4] analyzed the entropy generation in various seawater desalination technologies and found that after reverse osmosis (RO), MVC had the highest second law efficiency.…”

Section: Mechanical Vapor Compressionmentioning

confidence: 99%

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Mechanical vapor compression—Membrane distillation hybrids for reduced specific energy consumption

Swaminathan

Nayar

Lienhard

2016

Desalination and Water Treatment

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The energy efficiency of membrane distillation (MD) systems is low when compared to other thermal desalination systems. This leads to high water production costs when conventional fuels such as natural gas are used. In MD, separation of pure product water from feed water is driven by differences in vapor pressure between the streams. Thus, the process can occur at low temperature and ambient pressure. As a result, MD is most frequently paired with waste or renewable sources of low temperature heat energy that can be economically more feasible. MD systems with internal heat regeneration have been compared to and modeled similar to counter-flow heat exchangers. In this study, MD is used to replace the preheater heat exchanger used for thermal energy recovery from the brine stream in Mechanical Vapor Compression (MVC). Using MD in place of the heat exchanger results not only in effectively free thermal energy for MD, but also subsidized cost of capital, since the MD module is replacing expensive heat exchanger equipment. The MVC-MD hybrid system can lead to about 9% decrease in cost of water, temperature, a decrease in MVC recovery ratio and with a decrease in MD capital cost. The conductive gap configuration of MD leads to maximum savings, followed by air gap and permeate gap systems, over a range of operating conditions, assuming equal specific cost of capital for these configurations.

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Section: Mechanical Vapor Compressionmentioning

confidence: 99%

“…Key design inputs were also taken from other references [4,12,16]. The inputs to the model are given in Table 1.…”

Section: Mechanical Vapor Compressionmentioning

confidence: 99%

Mechanical vapor compression—Membrane distillation hybrids for reduced specific energy consumption

Swaminathan

Nayar

Lienhard

2016

Desalination and Water Treatment

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“…A transient model was developed to describe the significant dynamics of the desalination system. Aly and El-Fiqi [14] described a mathematical and experimental study of the MVC system. The experimental and theoretical results indicated that the production rate increases by increasing the operating temperature from 70°C to about 98°C.…”

Section: Nomenclaturementioning

confidence: 99%

An optimization model for a mechanical vapor compression desalination plant driven by a wind/PV hybrid system

et al. 2011

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“…It also reduces the overall land occupation of the plant due to the reduction of utilities investment. Low operating temperature. MVR evaporation system operating temperature is low, which is conducive to dealing with thermally sensitive material Other advantages include high automatic control level, high product quality, long service life, and so forth. However, the existing MVR evaporation technology also has some drawbacks that hinder the further development of the technology.…”

Section: Introductionmentioning

confidence: 99%

“…MVR evaporation system operating temperature is low, which is conducive to dealing with thermally sensitive material. 19 • Other advantages include high automatic control level, high product quality, long service life, and so forth.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of a mechanical vapor recompression evaporation system coupled with crystalization for salt separation

Kang

Jin

Xiao

2018

Asia-Pacific J Chem Eng

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Currently, the mechanical vapor recompression (MVR) system is extensively used for single salt separation, but the relevant research on mixed salt system treatment is still in initial stage. As a very common salt solution system, sodium chloride–potassium chloride–water system can be readily found in many processes. It is no doubt of great significance to separate their crystals from the mixed solution in an efficient and environmentally friendly way. Therefore, with the aid of Aspen Plus software, this study aims to design an MVR evaporation system capable of treating sodium chloride–potassium chloride–water system. Subsequently, the analysis about the start‐up schemes and some influencing factors in the steady‐state operation are carried out, so as to provide some guidance and reference for the future technical route to separate mixed salt system with low energy consumption.

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Mechanical vapor compression desalination systems — A case study

Cited by 95 publications

References 3 publications

Mechanical vapor compression—Membrane distillation hybrids for reduced specific energy consumption

Mechanical vapor compression—Membrane distillation hybrids for reduced specific energy consumption

An optimization model for a mechanical vapor compression desalination plant driven by a wind/PV hybrid system

Thermodynamic analysis of a mechanical vapor recompression evaporation system coupled with crystalization for salt separation

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