Naslov
Thermoeconomic optimization of CCPP's Bottom Cycle by using Organic Working Fluids

Autori
Katulić, Stjepko ; Čehil, Mislav ; Schneider, Daniel Rolph

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
Sustainable Process Integration Laboratory Scientific Conference

Mjesto i datum
Brno, Češka Republika, 06.12.2017. - 07.12.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
heat revovery steam generator ; organic cycle ; steam turbine

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA