The global demand for potable water is continuously increasing, making seawater desalination increasingly important. Since low exergy losses are crucial, membrane distillation represents a promising technology as it enables desalination at relatively low operating temperatures. In this thesis, a single-stage membrane distillation device was designed and constructed, and experiments were carried out at different evaporation temperatures and air gap widths. It was found that a smaller air gap significantly increases mass flux, and the experimental results agree well with the physical model.
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