Waste heat recovery cycle for producing power and fresh water

In a method for producing vapor from liquid, and employing hot fluid, multiple nozzles and multiple rotary separators, and multiple rotary turbines, the steps that include

• (a) transferring heat from said hot fluid to said liquid,
• (b) passing the heated liquid in pressurized state to a first stage nozzle for flow therethrough and expanding said flow therein to form vapor and liquid droplets,
• (c) causing the expanded flow to rotate a first stage separator associated with said first stage nozzle for forming a first layer of said liquid on that separator and accompanied by first stage vapor separation,
• (d) passing liquid from said first layer to first stage turbine means to drive same,
• (e) receiving liquid discharged from said first stage turbine means and passing the received liquid in pressurized state to a second stage nozzle for flow therethrough and expanding said flow therein to form vapor and liquid droplets,
• (f) causing the expanded flow from the second stage nozzle to rotate a second stage separator associated with said second stage nozzle for forming a second layer of said liquid on that separator and accompanied by second stage vapor separation, and
• (g) passing liquid from said second layer to second stage turbine means to drive same.

In a system for producing vapor from liquid, and employing hot fluid, the combination comprising

• (a) heat transfer means receiving the hot fluid and liquid for transferring heat from the hot fluid to said fluid,
• (b) first stage nozzle means connected to receive heated liquid from said heat transfer means for flow through the nozzle means and expansion therein to form vapor and liquid droplets in a first stage jet,
• (c) first stage rotary separator means located in the path of said first stage jet to be rotated thereby for producing a layer of liquid on the first rotating first stage separator means accompanied by vapor separation,
• (d) first stage turbine means communicating with said first stage separator means to receive liquid from said layer to drive the turbine means,
• (e) second stage nozzle means connected to receive liquid discharged from said first stage turbine means for flow through the second stage nozzle means and expansion therein to form vapor and liquid droplets in a second stage jet,
• (f) second stage rotary seaparator means located in the path of the second stage jet, to be rotated thereby for producing a layer of liquid on the second stage rotary separator means, accompanied by vapor separation, and
• (g) second stage turbine means communicating with said second stage separator means to receive liquid from said layer thereon to drive the second stage turbine means.