Kalina cycle application to gas turbine combined cycles
Book
·
OSTI ID:405501
Gas turbine-based combined cycles have gained broad market acceptance due to their favorable economics, high efficiency and excellent environmental performance. Combined-cycle performance improvements have tracked the rapid advance of gas turbine technology. The introduction of the steam-cooled STAG 107H and 109H combined-cycle systems with their 60% net plant efficiency capability is the latest step in this trend. High-efficiency steam bottoming cycles have also advanced, with the current state-of-the-art being the three-pressure reheat cycle. The Kalina Cycle utilizing a mixture of ammonia and water as the working fluid promises to further continue these combined cycle-performance improvements with dramatic changes in the bottoming cycle. These improvements are due to non-isothermal heat acquisition and heat rejection, as well as internal heat recuperation, which reduce losses of thermodynamic availability, or exergy, in the cycle. This paper discusses the application of the Kalina Cycle to gas turbine-based combined cycles, including system design and performance characteristics. It compares Kalina Cycle performance and economics with that of a state-of-the-art steam bottoming cycle, showing the potential economic advantages of this innovative cycle in combined-cycle applications. Several variants of the Kalina Cycle system and the Distillation Condensation Subsystem (DCSS), which replaces the condenser as the heat rejection and recuperation system of the Kalina Cycle, have been studied. Results show that the Kalina Cycle can enhance the gas turbine bottoming cycle power output by over 15% when compared with a three-pressure reheat Rankine bottoming cycle. This yields an efficiency improvement of 2-3 percentage points, a significant advance in the state-of-the-art. Based on these substantial performance gains, GE is pursuing the commercialization of the Kalina Cycle for combined-cycle applications under a worldwide exclusive license from Exergy, Inc.
- OSTI ID:
- 405501
- Report Number(s):
- CONF-951208--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Kalina combined cycle performance and operability
Utility-scale combined-cycle power systems with Kalina bottoming cycles
Modeling the application of the Kalina cycle to LEBS power plant
Conference
·
Mon Dec 30 23:00:00 EST 1996
·
OSTI ID:550001
Utility-scale combined-cycle power systems with Kalina bottoming cycles
Conference
·
Wed Dec 31 23:00:00 EST 1986
· Trans. Am. Nucl. Soc.; (United States)
·
OSTI ID:5581286
Modeling the application of the Kalina cycle to LEBS power plant
Conference
·
Tue Jul 01 00:00:00 EDT 1997
·
OSTI ID:490301