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Novel Power Cycle for Combined-Cycle Systems and Utility Power Plants
Abstract
The description of a new power cycle,
based on the use of a multicomponent
working fluid, was published earlier. A
thermodynamic analysis of this cycle has
demonstrated its superiority over the
currently used Rankine Cycle, and a
distribution of losses in the subsystems
of this cycle has been established. A
new, improved variant of the cycle, which
provides 10% efficiency improvement over
the initial variant, has been developed.
The new variant employs a cooling of the
working fluid between turbine stages and a
recuperation of the released heat for
supplementation of the boiler heat supply.
Analysis shows that with this new,
improved cycle efficiencies of up to 52%
for a combined-cycle system employing
standard turbines, and of up to 55% when
modern high-temperature gas turbines are
employed, can be achieved. The same cycle
can be utilized to retrofit existing
direct-fired power plants, providing an
efficiency of up to 42%. The possible
implications off such a cycle implementation are briefly discussed. The Electric
Power Research Institute (EPRI) is now
conducting a study of this cycle.
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Citation
Kalina, A. L. (1986). Novel Power Cycle for Combined-Cycle Systems and Utility Power Plants. Energy Systems Laboratory (http://esl.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /93009.