Thermal analysis of the steam power process with supercritical steam parameters

U ovom radu izrađena je toplinska analiza termoenergetskog procesa s radnim parametrima u nadkritičnom području koji sadrži sedam regenerativnih zagrijača napojne vode i jednim međupregrijanjem. Na samom početku opisan je način rada različitih tipova termoelektrana, nakon čega je objašnjen rad nadkritičnog parnog postrojenja s njenim glavnim dijelovima. Prilikom izrade toplinske analize je bilo potrebno odrediti određena stanja u procesu, izračunati količinu pregrijane pare koja se proizvodi u generatoru pare, količinu pare pri svakom odvajanju i potrošnju goriva. Rezultati dobiveni klasičnim proračunom uspoređeni su s rezultatima dobivenim u programu Ebsilon professional. Osim zadane termoelektrane, program Ebsilon professional korišten je i za izradu simulacija tipove elektrana s podkritičnim i super nadkritičnim parametrima, te je na samom kraju napravljena usporedba rezultata istih. Na temelju rezultata može se zaključiti da korištenjem parametara u nadkritičnom području dolazi do veće iskoristivosti procesa.This thesis deals with the thermal analysis of the Clausius-Rankine process with operating parameters in the supercritical area containing seven regenerative feedwater heaters and one intermediate superheater. At the very beginning, the operational parameters for different types of thermal power plants are described, after which the operation of a supercritical steam plant with its main parts is explained. When making the thermal analysis, it is necessary to determine the certain states in the process, calculate the amount of superheated steam produced in the steam generator, the amount of steam at each separation and fuel consumption. The results obtained by the basic calculation were compared with the results obtained in the Ebsilon professional program. In addition to the given thermal power plant, the Ebsilon professional program was also used to develop simulations for types of power plants with subcritical and ultra supercritical parameters, and at the very end the comparison of the results was made. Based on the results, it can be concluded that the use of parameters in the supercritical area leads to greater efficiency of the process