HYBRID RANKINE CYCLE

摘要

A system using hybrid Rankine cycles is provided. The system includes a first Rankine cycle system using a first working fluid, the first system producing exergy loss and residual energy from at least one of turbine extraction, turbine condensation and boiler flue gas; and a second Rankine cycle system using a second working fluid to recover the exergy loss and residual energy. The second working fluid comprises a first stream and a second stream, wherein the first stream exchanges heat with the first system via at least one first heat exchanger, and the second stream exchanges heat with the first system via the at least one first heat exchanger and at least one second heat exchanger. A turbine of the first system is configured to allow the first working fluid to exit at a sufficiently high pressure and temperature to provide heat to the second system instead of expanding to a low pressure and temperature and discharging heat to ambient using a condenser.

主权项

1. A hybrid thermal energy conversion system comprising:
a first reheat-regenerative Rankine cycle system comprising a turbine using a first working fluid, the first Rankine cycle system producing exergy loss and residual energy from at least one of turbine extraction, turbine condensation and boiler flue gas; and a second Rankine cycle system using a second working fluid to recover the exergy loss and residual energy of the first Rankine cycle system; wherein the second working fluid comprises at least a first stream and a second stream, and wherein the first stream exchanges heat with the first Rankine cycle system via at least one first heat exchanger, and the second stream exchanges heat with the first Rankine cycle system via at least one first heat exchanger and at least one second heat exchanger.