Membrane distillation (MD) is a thermally driven separational program in which separation is enabled due to phase change. A hydrophobic membrane displays a barrier for the liquid phase, allowing the vapour phase (e.g. water vapour) to pass through the membrane's pores. The driving force of the process is given by a partial vapour pressure difference commonly triggered by a temperature difference. In DCMD, both sides of the membrane are charged with liquid- hot feed water on the evaporator side and cooled permeate on the permeate side. The condensation of the vapour passing through the membrane happens directly inside the liquid phase at the membrane boundary surface. Since the membrane is the only barrier
blocking the mass transport, relatively high surface related permeate flows can be achieved with DCMD. Exergy and cost analyses are considered in this model.
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Copyright © 2007 by Mohamed A. Sharaf Eldean Ayoub
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Direct Contact Membrane Distillation: Design Model
User can reform the model based on his need. Dynamic modeling is allowed.