A small scale Multi-effect Distillation (MED) unit for rural micro enterprises: Part I—design and fabrication

Sen, P.K.; Sen, Padma Vasudevan; Mudgal, Anurag; Singh, Shikha; Vyas, Shaili; Davies, Philip A.

doi:10.1016/j.desal.2010.11.003

Cited by 25 publications

(10 citation statements)

References 2 publications

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“…On the basis of energy consumption and heat transfer, it has been found that MED was more efficient than MSF [11]. The significant advantages, including low scale formation, easy operation, high performance ratio (PR), and operating with any available source of heat energy, have made MED to be widely used in seawater desalination [12][13][14].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

A lab-scale MED dealing with salinity wastewater: the study of optimal operation schemes and parameters

Zhao

Liu

Xue

et al. 2015

Desalination and Water Treatment

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2015): A lab-scale MED dealing with salinity wastewater: the study of optimal operation schemes and parameters, Desalination and Water Treatment, A B S T R A C TMulti-effect distillation (MED) system with a top brine temperature lower than 70˚C, is one of the most successful desalination technologies. In this paper, a lab-scale vertical tube MED system was performed for salinity wastewater desalination of petrochemical enterprises, and five salinity wastewater treatment schemes including different combinations of evaporator types were investigated. As a result, the falling-falling-climbing (FFC) system was considered as the optimal scheme. Then, the operation parameters including the feedwater salinity, temperature, flow rate, and the fresh steam flow rate were further optimized. The results indicated that the CR and gained output ratio (GOR) would rise up by increasing effect numbers, fresh steam flow rate, and feedwater temperature. While CR and GOR would fall down with the increase of the feedwater salinity and flow rate. Therefore, the optimal operation parameters were experimentally determined as follows: the feedwater with salinity of 0.6%, flow rate of 75 kg/h, and temperature of 45˚C, and fresh steam flow rate of 17 m 3 /h. The maximum CR and GOR were up to 5.08 and 4.13, respectively.

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Section: Desalination and Water Treatmentmentioning

confidence: 99%

A lab-scale MED dealing with salinity wastewater: the study of optimal operation schemes and parameters

Zhao

Liu

Xue

et al. 2015

Desalination and Water Treatment

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“…Among the desalination processes, the MED thermal process is a promising process due to low electrical energy consumption, low operating cost, and high thermal efficiency [11,32]. Based on the energy consumption and obtained heat transfer, MED has been found to be more efficient than Multi Stage Flash Distillation (MSF) [21,33,34]. Table 2 shows the most recent technical literature published on this topic.…”

Section: Multi Effect Distillationmentioning

confidence: 99%

Commercial Thermal Technologies for Desalination of Water from Renewable Energies: A State of the Art Review

Feria-Díaz¹,

López-Méndez²,

Sandoval-Herazo³

et al. 2021

Preprint

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Thermal desalination is yet a reliable technology in the treatment of brackish water and seawater; however, its demanding high energy requirements have lagged it compared to other non-thermal technologies such as reverse osmosis. This review provides an outline of the development and trends of the three most commercially used thermal or phase change technologies worldwide: Multi Effect Distillation (MED), Multi Stage Flash (MSF), and Vapor Compression Distillation (VCD). First, state of water stress suffered by regions with little fresh water availability and existing desalination technologies that could become an alternative solution are shown. The most recent studies published for each commercial thermal technology are presented, focusing on optimizing the desalination process, improving efficiencies, and reducing energy demands. Then, an overview of the use of renewable energy and its potential for integration into both commercial and non-commercial desalination systems is shown. Finally, research trends and their orientation towards hybridization of technologies and use of renewable energies as a relevant alternative to the current problems of brackish water desalination are discussed. This reflective and updated review will help researchers to have a detailed state of the art of the subject and to have a starting point for their research, since current advances and trends on thermal desalination are shown.

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“…For rural applications where decentralized supply of water is needed, the plant should have the following characteristics [2]:…”

Section: Objectivesmentioning

confidence: 99%

A Cost-Effective Wind Power-Driven RO Plant for Treatment of Brackish Water

Verma¹,

Meena²,

Mudgal³

2015

GEP

Self Cite

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Desalination has often been perceived as a high cost means of producing water. Reason being that some of the water treatment methods use electricity to run a pump as in Reverse Osmosis system and some uses thermal energy to produce steam as in Multi Effect Distillation. High cost and less availability of conventional fuels has attracted the focus of researchers to explore other unconventional means and methods to purify water. This paper explores the possibility of using wind power for water treatment. In costal countries, tremendous wind power is available at the coastline which may be used to drive a RO plant. In India particularly, the average wind speed calculated along the coastlines of Gujarat state gives a fair idea about potential of energy that can be generated. This energy can be harnessed to run a rotating pump, or a piston-cylinder arrangement coupled with RO module to provide the necessary pressure required to push saline water through the membrane. Along the western coast of India there is an abundance of wind energy to capitulate high amount of energy in terms of electrical Power. If the rotor diameter is 4 feet (1.3 m) and located at a height of 8 feet (2.5 m), each wind turbine may produce power of around 2 KW. This power may be used to run the reciprocating pump which provides pressure to the RO Apparatus. The paper describes recent advancements in the wind industries technology to produce electrical energy at low cost but it concentrates more on coupling wind energy directly with RO module to save energy conversion cost which is a seldom or different approach than converting electrical energy to mechanical energy for running of RO system.

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A small scale Multi-effect Distillation (MED) unit for rural micro enterprises: Part I—design and fabrication

Cited by 25 publications

References 2 publications

A lab-scale MED dealing with salinity wastewater: the study of optimal operation schemes and parameters

A lab-scale MED dealing with salinity wastewater: the study of optimal operation schemes and parameters

Commercial Thermal Technologies for Desalination of Water from Renewable Energies: A State of the Art Review

A Cost-Effective Wind Power-Driven RO Plant for Treatment of Brackish Water

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