Abstract
Membrane distillation (MD) as a thermally driven process with moderate operating temperatures is a known effective technology for saltwater desalination. In this chapter, the permeate gap membrane distillation (PGMD) configuration, as a novel sustainable MD design having internal heat recovery characteristics, is introduced and numerical modeling of the heat and mass transfer phenomena in this configuration is studied. To investigate the efficiency of the PGMD system, the results of two experimental projects are described one a laboratory-scale flat PGMD rig, which was developed at RMIT University, and the other, for commercial-scale PGMD modules, which was developed by the Franhaufer Institute.
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