Modified Steam-Turbine Rankine Cycle without Rejection of the Cycle Condensation Heat, Driven by a Wet-Vapor-Region Thermocompressor / Modifikovani Rankinov ciklus parne turbine bez odbacivanja toplote kondenzacije ciklusa, pokretan termokompresorom koji radi u oblasti vlažne pare

Energija, ekonomija, ekologija, 2, XXVI (2024) (стр 71-78)
 

АУТОР(И) / AUTHOR(S): Branko STANKOVIĆ

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DOI: 10.46793/EEE24-2.71S

САЖЕТАК / ABSTRACT:

The disclosed concept relates to a novel modified and simplified steam-turbine Rankine cycle without rejection of the cycle waste heat of condensation, which is driven by a thermocompressor (ejector) operating in the wet-vapor region. The thus modified steam-turbine Rankine cycle can theoretically achieve the maximum possible thermal efficiency (~100%). The wet-vapor mixture circulating within the thermocompressor is being separated in a dedicated cylindrical separation tank, so that the saturated water is pumped to a water heater where it receives the cycle heat input, while the saturated vapor is expanded in a backpressure steam turbine producing useful mechanical work and is then recirculated back to the thermocompressor, where it is being re-pressurized by means of the primary fluid (pumped and heated saturated water). The concept can be applied to steam-turbine-cycle power-plants fueled by: coal or solid/liquid/gaseous fuel, waste heat, nuclear fuel (used by boiling water reactors, pressurized water reactors, pressurized heavy-water reactors, gas-cooled reactors, molten salt reactors or liquid-metal-cooled fast reactors) or renewable energy sources (Solar energy, biomass, geothermal). The concept can also be applied as the “bottoming” steam-turbine-cycle part of a combined gas-turbine/steam-turbine cycle power plant.

КЉУЧНЕ РЕЧИ / KEYWORDS:

modified Rankine cycle, no rejection of cycle waste heat of condensation, thermocompressor operating in the wet-vapor region, maximum possible cycle thermal efficiency

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