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Document Type |
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Thesis |
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Document Title |
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INVESTIGATION OF VACUUM MEMBRANE DISTILLATION (VMD) OPERATING PARAMETERS TO MINIMIZE POLARIZATION EFFECTS دراسة المتغيرات التشغيلية للتقطير الغشائي الفراغي للتقليل من تأثير ترسبات الأملاح |
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Subject |
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Faculty of Engineering |
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Document Language |
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Arabic |
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Abstract |
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Vacuum Membrane Distillation (VMD) is an attractive, promising technology of membrane process for separations, including water desalination. This research work is part of an effort to improve the operation of VMD process for water desalination applications, as well as to optimize the performance of the vacuum membrane distillation for production (flux) and energy. Therefore, it is essential to study the impact of operating parameters on the production of water.
Design of Experiment techniques were used to determine the factors, levels, and targets. Then analysis of variance was used to translate the result into statistical technique to determine if a significant connection exists between variables. Experiments were performed in a laboratory pilot plant VMD unit at KAUST, utilizing PTFE membrane module. Performance data was collected at different hot side temperatures (50 ◦C, 55 ◦C, 60 ◦C),cold side temperature (15 ◦C, 20◦C ,25 ◦C) and flowrate (2.00 L\min , 2.25 L\min , 2.5 L\min) with real red sea water.
Confirming system productivity was improved with increasing feed flow, alongside with temperatures; pure water was gained. Temperature and Concentration Polarization
coefficients were discussed in terms of contributing in the production, energy, as well as obtaining the optimized value for the permeate flux, as well as new approach of correlation was achieved.
Using Temperature Polarization Coefficient (TPC) is an excellent method to determine the optimize values for VMD that were between 0.50 – 0.70. Higher value means the VMD system has less heat transfer and vice versa. Creating differential temperature between hot side (heater) and cold side (condenser) will enhance the flux either by installing a pre-heater or minimizing the condenser temperature to as low as possible. The new proposed approach of TPC is determined by the middle temperature of the membrane and matches our proposed TPC values. |
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Supervisor |
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Dr. Hisham Bamfleh |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1442 AH
2020 AD |
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Added Date |
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Saturday, November 14, 2020 |
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Researchers
| عمار محمود بخيت | Bakhit, Ammar Mahmoud | Researcher | Master | |
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