Performance investigation of MEMSYS vacuum membrane distillation system in single effect and multi-effect mode

Burhan, Muhammad; Shahzad, Muhammad Wakil; Ybyraiymkul, Doskhan; Oh, Seung Jin; Ghaffour, Noreddine; Ng, Kim Choon

doi:10.1016/j.seta.2019.04.003

Cited by 24 publications

(16 citation statements)

References 32 publications

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“…Therefore, each data point indicates a unique operating condition specified in Table 4. Moreover, the results of the mathematical model were also compared with those of Burhan et al [29] and Mohamed et al [13]. Generally, a good model-plant agreement was obtained.…”

Section: Model Validationmentioning

confidence: 87%

“…Notably, the effect of salinity on the various performance indicators becomes larger when the MD system operates at higher temperatures. Within the range of the operating temperatures considered in this section, the simulations show that distillate flux, GOR, and recovery ratio values of 12 kg/m 2 h, 2.7, and 36% may be achieved, indicating a higher performance compared to similar V-MEMD systems [10][11][12][13][14]29].…”

Section: Performance Evaluation 421 Energetic Analysismentioning

confidence: 95%

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Assessing the Impact of Operating Conditions on the Energy and Exergy Efficiency for Multi-Effect Vacuum Membrane Distillation Systems

Najib

Orfi

Al-Ansary

et al. 2021

Water

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A comprehensive study was conducted to elucidate the effect of operating conditions on the performance of a multi-effect vacuum membrane distillation pilot plant. A theoretical assessment of the energy and exergy efficiency of the process was achieved using a mathematical model based on heat and mass transfer, which was calibrated using experimental data obtained from the pilot plant. The pilot plant was a solar vacuum multi-effect membrane distillation (V-MEMD) module comprising five stages. It was found that a maximal permeate mass flux of 17.2 kg/m2·h, a recovery ratio of 47.6%, and a performance ratio of 5.38% may be achieved. The resulting gain output ratio (GOR) under these conditions was 5.05, which is comparable to previously reported values. Furthermore, the present work systematically evaluated not only the specific thermal energy consumption (STEC), but also the specific electrical energy consumption (SEEC), which has been generally neglected in previous studies. We show that STEC and SEEC may reach 166 kWh/m3 and 4.5 kWh/m3, respectively. We also observed that increasing the feed flow rate has a positive impact on the process performance, particularly when the feed temperature is higher than 65 °C. Under ideal operational conditions, the exergetic efficiency reached 21.1%, and the maximum fraction of exergy destruction was localized in the condenser compartment. Variation of the inlet hot and cold temperatures at a constant differential showed an interesting and variable impact on the performance indicators of the V-MEMD unit. The difference with the lowest inlet temperatures exhibited the most negative impact on the system performance.

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Section: Model Validationmentioning

confidence: 87%

Section: Performance Evaluation 421 Energetic Analysismentioning

confidence: 95%

Assessing the Impact of Operating Conditions on the Energy and Exergy Efficiency for Multi-Effect Vacuum Membrane Distillation Systems

Najib

Orfi

Al-Ansary

et al. 2021

Water

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“…Noteworthily, the parallel (single-effect) and counter-current flow design membrane modules were considered in the present study. The fluid flow schematic of this consideration is shown in Figure 2B [30]. As demonstrated in Figure 2A, different size spacers were put together.…”

Section: Methodsmentioning

confidence: 99%

Bispacer Multi-Stage Direct Contact Membrane Distillation System: Analytical and Experimental Study

Khoshvaght-Aliabadi¹,

Ghorashi²,

Motlagh³

et al. 2021

Processes

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A multi-staged direct contact membrane distillation (MDCMD) system is designed considering a novel bispacer configuration in the present study. The proposed bispacer DCMD, which has not been addressed in the literature to best of our knowledge, is considered with two purposes, including increasing mechanical stability and turbulence. As increasing turbulence leads to increasing Nusselt number, the bispacer MDCMD provides higher permeate flux. An analytical approach is considered using energy and mass balance correlation. The effect of bispacer and feed operating conditions, including feed temperature, feed flow rate, feed salinity, and the number of stages on permeate flux and salt rejection of the developed MDCMD, are examined both analytically and experimentally. The performance and sustainability of the developed system were investigated by analyzing the parameters, including thermal efficiency (η), gained output ratio (GOR), and temperature polarization coefficient (TPC).

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“…Some of the many exploration endeavors to utilize sun-based energy to supply the MD with power are presented in the accompanying passages. For example, M. Burhan et al [ 7 ] tried the vacuum membrane distillation (VMD) arrangement framework from MEMSYS. This framework involves 4 VMD portions in an arrangement that is made out of absolute four VMD modules that are working in single and multi-impact designs.…”

Section: Solar-assisted Membrane Distillation Systems—state Of the Artmentioning

confidence: 99%

Experimental Investigation of a Pilot Solar-Assisted Permeate Gap Membrane Distillation

2021

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This research deals with the process of water desalination, involving an experimental design used to study a new prototype of a solar membrane distillation plant based on the weather conditions of Kairouan City, Tunisia. In this experiment, the pilot is left autonomous with the sun as the only source of energy. The operating process of a desalination plant consists of solar energy provided by the sun using solar energy collectors, which provide energy through their photovoltaic panels for heating brackish water. Additionally, the membrane used in this study was of the spiral wound design, which allowed for a compact arrangement besides effective internal heat recovery. The system start-up was successfully carried out and experimental studies were launched on various days of August 2020. During the experiment, the average production was approximately 15.92 L/m2 ap per day while the distillate’s electoral conductivity amounted to 1865 μS/cm. Calculations revealed that the specific thermal energy consumption for the system ranged between 90 and 310 kWh/m3.

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Performance investigation of MEMSYS vacuum membrane distillation system in single effect and multi-effect mode

Abstract: Performance investigation of MEMSYS vacuum membrane distillation system in single effect and multi-effect mode. Sustainable Energy Technologies and Assessments 34: 9-15.

Cited by 24 publications

References 32 publications

Assessing the Impact of Operating Conditions on the Energy and Exergy Efficiency for Multi-Effect Vacuum Membrane Distillation Systems

Assessing the Impact of Operating Conditions on the Energy and Exergy Efficiency for Multi-Effect Vacuum Membrane Distillation Systems

Bispacer Multi-Stage Direct Contact Membrane Distillation System: Analytical and Experimental Study

Experimental Investigation of a Pilot Solar-Assisted Permeate Gap Membrane Distillation

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