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以響應曲面法進行自加熱真空薄膜蒸餾的最佳化

為了解決Fraction calculator的問題，作者Shaneza Fatma Rahmadhanty 這樣論述：

Currently, technology is increasingly advanced and has penetrated into several fields such as Membrane Distillation (MD) in water treatment, especially to purify saline water, in the face of the increasing scarcity of clean water needed for consumption, both in the domestic, agriculture, and indust

rial sectors. One of the configurations in MD systems, Vacuum Membrane Distillation (VMD) system, which employs a Graphene-PVDF membrane heated by power supply, in this case using DC power with low voltage, to eliminate feed pre-feed heating and temperature polarization, is interesting to learn. In

addition, to enhance the performances, such as maximizing Water Permeate Flux (JW), Temperature Polarization Factor (TPF), Gain Output Ratio (GOR), and minimizing Specific Heating Energy (QSH), several different designs are made and compared. In this research, four parameters are selected: DC power

supply’s voltage, feed flow rate, the length, and the width of the cell body's slot. Ansys FLUENT software is utilized to simulate the system, followed by Minitab software to analyze the results using Response Surface Method (RSM) which aims to achieve the optimal design parameters and to discover t

he effect of the design parameters. The results show that horizontal shape gives better performances than the vertical one, voltage is the most significant factor to all the performances, and specifically for JW and TPF are also affected by flow rate afterwards as response with 5% significance level

. While the best performance obtained from RSM is the 5-slot in horizontal shape, which can be proven by experimental validation with the factors of 2 mm for the slot’s width, 20 mm for the slot’s length, 12.2222 V for the DC voltage, and 5 mL/min for the feed flow rate. And the performance’s respon

ses are 2.2860 L/m2h for JW, 102.58% for TPF, 0.2487 kWh/L for QSH, and 2.6882 for GOR. Moreover, the effective heating temperature for 5-slot in horizontal design is also analyzed through this study and it is found to be 39°C.