Patent ID: 7373904

Claim:
A stratified vapor generator, comprising: at least first and second continuous heating sections; the first heating section having an inlet and an outlet; the second heating section having an inlet and an outlet; the inlet of said second heating section being operatively associated with the outlet of said first heating section, the at least first and second heating sections progressively evaporating a mixed working fluid having at least two components that evaporate at different temperatures, the progressive evaporation maintaining a substantially constant vapor volume fraction through the at least first and second continuous heating sections without dividing the mixed working fluid; a separator operatively associated with the outlet of said second heating section, said separator having a vapor outlet and a liquid outlet; and a cooling section having an inlet and an outlet, the inlet of said cooling section being operatively associated with the liquid outlet of said separator, the outlet of said cooling section being operatively associated with the inlet of said second heating section.