Rainmaker - Water-to-Water Unit

Using a membrane distillation process, water is evaporated under low pressure through a heat pump condensation process. The vapor produced by heating the water then passes through the membrane. Unlike reverse osmosis, where water with dissolved salts and other solids is forced through the membrane, this membrane only allows water vapor to pass through. The pores in this membrane are larger than the pores in reverse osmosis membranes, so less pressure, and thus less energy is required.