Thermoeconomic optimization of CCPP's Bottom Cycle by using Organic Working Fluids (CROSBI ID 656159)
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Podaci o odgovornosti
Katulić, Stjepko ; Čehil, Mislav ; Schneider, Daniel Rolph
engleski
Thermoeconomic optimization of CCPP's Bottom Cycle by using Organic Working Fluids
One of the measures to reduce CO2 emissions and to increase energy efficiency is to improve thermodynamic efficiency of a combined cycle power plant by improving heat utilization in heat recovery steam generator. In this paper a mathematical model of a combined cycle power plant's bottom cycle was made. Heat recovery steam generator, which is a crucial element of bottom cycle, is modeled as a heat-exchanger's network. It consists of multi pressure levels and a reheater and uses organic working fluids in lower pressure levels. The mathematical model gives possibility that heat-exchangers, of each pressure level, can be in their mutual parallel and serial arrangement. In this paper thermoeconomic optimization was conducted. The objective of optimization was minimization of exergy losses of a bottom cycle and minimization of investment costs. The genetic algorithm and gradient optimization methods were used as optimization tools. Results show that lower exergy losses can be achieved by using organic fluids in lower pressure levels of heat recovery steam generator.
heat revovery steam generator ; organic cycle ; steam turbine
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Podaci o prilogu
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Podaci o skupu
Sustainable Process Integration Laboratory Scientific Conference
poster
06.12.2017-07.12.2017
Brno, Češka Republika