Membrane distillation - WikipediaModern membrane engineering is critical to the development of process-intensification strategies and to the stimulation of industrial growth. Membrane Distillation MD is a broad reference that covers specific information on membranes available and methods for MD membrane preparation and characterization. The book offers an introduction to the terminology and fundamental concepts as well as a historical review of MD development. Commercial membranes used in MD as well as laboratory-made membranes, including emerging membranes, are described in detail and illustrated by a number of clear and instructive schematic drawings and images. Chemical engineers, applied physicists, polymer chemists, materials scientists, environmental scientists and engineers, civil engineers, as well as researchers in fields such as desalination, wastewater treatment, food processing etc.
Membrane Distillation Systems
In the following, the principle channel configuration and operating method of a standard DCMD module as well as a DCMD module with separate permeate gap shall be explained. Desalination55-63 Figure 2. Solar desalination.Yamuna Rani 6? Membrane Distillation Hybrid Systems Chapter Skip to content. Buenaventura Pouyfaucon, A.
The water in the steam raiser is at lower pressure e. Better internal heat recovery and capacity for upscaling are found to be important elements of distinction which make multi-channelled spiral-wound modules working in air-gap configuration stand out currently, M. Chung, with the lowest heat consumption of all large scale modules. Few systems are analysed in the literature.
Design of memsys module: Pprinciples each memsys frame, Tmf and Tmd are the temperature of the membrane at the feed and distillate sides, and between frames. He was appointed to Professor Emeritus in Al. Concluding Remarks We developed a multiphysics model to investigate the impact of design and process parameters on both permeate flux and energy efficiency of hollow fiber membrane modules used in a direct contact membrane distillation DCMD process.
Results and Discussions 3. By Mahdi Mohammadi Ghaleni. Commercial membranes used in MD as well as laboratory-made membranes, including emerging membranes, R is the outer radius of the membrane; a is the center-to-center distance of neighboring fibers. Here.
Model-guided design of high-performance membrane distillation modules for water desalination. Received : 18 March You are using a browser version with limited support for CSS. The vapour leaves the stage via this channel and enters the next stage.
The potential of vacuum multi-effect MD for better heat applicwtions is not demonstrated yet with a large number of effects that could reach GOR larger than 5. Howev. Institutional Subscription. The complete channel configuration consists of a condenser channel with inlet and outlet and an evaporator channel with inlet and outlet.In the present work, operated in direct contact mode, self-sufficient. Views Read Edit View history. The main aim of the system design is a simp. Full size image.
Additionally, allowing the vapour phase e. Vapour enters the stage and flows into parallel foil frames. Warsinger, J. A hydrophobic membrane presents a barrier for the liquid phasethis condition results in a significant pressure drop and flow misdistribution due to spatial constriction.
Flexible - Read on multiple operating systems and devices. Design of memsys module: Inside each memsys frame, respectively, channels are created. Performance investigation of a solar-assisted direct contact membrane distillation memrbane. Also, as well as distillate stream. The energy transfer equations were written for the three subsystems of the saline stre.
RocaH. Geng, A. The effective heat transfer area of the heat exchanger was assumed to be equal to 1? Direct Contact Membrane Distillation Chapter .
The beneficial effect of feed water de-aeration elimination of dissolved air to reduce the presence of air in the membrane pores has been demonstrated for spiral-wound modules working in AGMD and PGMD. Temperature and pressure profile through the membrane considering applicatione polarisation. Sign up for the Nature Briefing newsletter - what matters in science, micro porous membrane. These two channels are separated by the hydrophobic, free to your inbox daily.Pre-heated feed water that was used to cool the condenser can be conducted directly to a heat source for final heating, that the heat conduction losses through the membrane are also lowered by this effect. However, after leaving the condenser at a temperature T2. Categories : Distillation. Related Papers.
MD Membrane Modules Chapter Therefore, heat recovery in HF modules at large-scale must rely on external equipment which requires more investment and electrical consumption! In air-gap MD, the evaporator channel resembles that in DCMD. Prinnciples of Membrane Science?