A new enhancement technique on air gap membrane distillation

Tian, Rui; Gao, Hong; Yang, Xiaohong; Yan, Suying; Li, Sheng

doi:10.1016/j.desal.2013.10.016

Cited by 40 publications

(15 citation statements)

References 23 publications

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“…Therefore, two fitting equations were used respectively for bubbly flow and slug flow, as shown in Eqs. (19) and (20) …”

Section: Setup Of Heat Transfer Correlationsmentioning

confidence: 99%

“…Li et al [17,18] found that cross-flow hollow fiber module could ensure a high heat transfer coefficient at low Reynolds number (Re) in both vacuum membrane distillation (VMD) and DCMD processes. By modifying the hot feed flow direction and the air gap configuration, Tian et al [19] boosted the permeation flux up to 2.5-fold in comparison with the conventional design.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Study on the heat and mass transfer in air-bubbling enhanced vacuum membrane distillation

Zhang

et al. 2015

Desalination

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“…Therefore, two fitting equations were used respectively for bubbly flow and slug flow, as shown in Eqs. (19) and (20) …”

Section: Setup Of Heat Transfer Correlationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Study on the heat and mass transfer in air-bubbling enhanced vacuum membrane distillation

Zhang

et al. 2015

Desalination

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“…Their results showed that a special cooling plate design having number of fins enhances the system performance by about 50% when compared to a flat cooling plate. Tian et al [19] presented an innovative module design which allows partial contact of membrane material with the condensation surface. The design minimized the additional transport resistance established by the air gap, thereby improving the efficiency of the system.…”

Section: Introductionmentioning

confidence: 99%

Application of response surface and Taguchi optimization techniques to air gap membrane distillation for water desalination—A comparative study

Khalifa

Lawal

2016

Desalination and Water Treatment

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A B S T R A C TThe performance of an air gap membrane distillation (AGMD) system for water desalination was optimized and compared using Taguchi orthogonal design arrays and the response surface methodology (RSM) Face-Centered Central Composite Design. The variables considered in the optimization are feed flow rate, feed temperature, coolant temperature, coolant flow rate, and air gap width. Additionally, a quadratic RS-model between response and the operating parameters was developed. Analysis of variance was then use to analyze the model and the significant effect of each operating parameters on flux. Results showed that the feed temperature and the air gap width are the most influential factors controlling the permeate production. The sensitivity of the permeate flux to coolant flow rate is marginal compared to other factors. From Taguchi technique, a maximum flux of 76.046 kg/m 2 h was obtained at optimum conditions. The RSM approach produced a maximum flux of 76.998 kg/m 2 h at optimum conditions. Although both techniques predicted very similar results, the RSM gives better predictions of the influence of operating parameters on response, and it is a better tool for the optimization of AGMD system compared to Taguchi methodology.

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“…Membrane distillation fairly overcomes the limitation of thermal distillation and reverse osmosis. The requirement of very low grade energy and high customizability give it the added advantages over those processes [5].…”

Section: Introductionmentioning

confidence: 99%

“…The coolant plate is used in a special type of water purification system which is called Air Gap Membrane Distillation (AGMD) [5]. It is a type of MD process where the vapour from the waste/saline water travels through the hydrophobic membrane pores and gets condensed on the cooler side on a condensing (coolant) plate [6].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Freshwater Production Using Finned-Plate Air Gap Membrane Distillation (AGMD)

et al. 2017

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Abstract. Air Gap membrane distillation (AGMD), a special type of energy efficient membrane distillation process, is a technology for producing freshwater from waste water. Having some benefits over other traditional processes, this method has been able to draw attention of researchers working in the field of freshwater production technologies. In this study, a basic AGMD system with flat coolant plate has been modified using a specially designed channelled coolant plate of portable size to observe its effect over the production rate and performance of the system. Attempt has been made to increase the amount of distillate flux by using the "fin effect" of the channelled coolant plate. A finned plate have been used instead of a flat coolant plate and experiments were conducted to compare the effect. Coolant temperature and feed temperature of the system have been varied from 10°C to 25°C and 40°C to 70°C respectively. Comparing the data, around 50% to 58% distillate enhancement has been observed for channelled coolant plate. Also, it was seen that the enhancement was higher for higher feed temperatures and coolant temperatures. With these findings, a better performing AGMD module has been introduced to mitigate the scarcity of freshwater.

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A new enhancement technique on air gap membrane distillation

Cited by 40 publications

References 23 publications

Study on the heat and mass transfer in air-bubbling enhanced vacuum membrane distillation

Study on the heat and mass transfer in air-bubbling enhanced vacuum membrane distillation

Application of response surface and Taguchi optimization techniques to air gap membrane distillation for water desalination—A comparative study

Enhanced Freshwater Production Using Finned-Plate Air Gap Membrane Distillation (AGMD)

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