prikaz prve stranice dokumenta Optimizacija kombiniranog Brayton-Rankineova ciklusa s obzirom na ukupni termički stupanj djelovanja
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master's thesis
Optimizacija kombiniranog Brayton-Rankineova ciklusa s obzirom na ukupni termički stupanj djelovanja
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. urn:nbn:hr:235:239555
Rauch, Martina
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

Cite this document

Rauch, M. (2014). Optimizacija kombiniranog Brayton-Rankineova ciklusa s obzirom na ukupni termički stupanj djelovanja (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:239555

Rauch, Martina. "Optimizacija kombiniranog Brayton-Rankineova ciklusa s obzirom na ukupni termički stupanj djelovanja." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. https://urn.nsk.hr/urn:nbn:hr:235:239555

Rauch, Martina. "Optimizacija kombiniranog Brayton-Rankineova ciklusa s obzirom na ukupni termički stupanj djelovanja." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. https://urn.nsk.hr/urn:nbn:hr:235:239555

Rauch, M. (2014). 'Optimizacija kombiniranog Brayton-Rankineova ciklusa s obzirom na ukupni termički stupanj djelovanja', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 29 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:239555

Rauch M. Optimizacija kombiniranog Brayton-Rankineova ciklusa s obzirom na ukupni termički stupanj djelovanja [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2014 [cited 2024 November 29] Available at: https://urn.nsk.hr/urn:nbn:hr:235:239555

M. Rauch, "Optimizacija kombiniranog Brayton-Rankineova ciklusa s obzirom na ukupni termički stupanj djelovanja", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:235:239555

Metadata
TitleOptimizacija kombiniranog Brayton-Rankineova ciklusa s obzirom na ukupni termički stupanj djelovanja
Title (english)Optimization of combined Bryton-Rnakine cycle with respect to total thermal efficiency
AuthorMartina Rauch
MentorAntun Galović (mentor)
MentorZdravko Virag (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2014-12-05, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U radu je matematički modeliran kombinirani Brayton – Rankineov ciklus koji se sastoji od sljedećih komponenata: kompresora, komore izgaranja, plinske turbine, generatora pare na otpadnu toplinu, parne turbine, kondenzatora te pumpe. Definiran je model kombiniranog ciklusa s 13 karakterističnih točaka na ulazima, odnosno izlazima iz komponenata sustava. Za svaku točku dane su pripadajuća temperatura, tlak, entalpija i entropija. Iz zakona očuvanja energije izračunati su izmjenjeni toplinski tokovi i neto dobivene snage u sustavu, te termodinamički (termički) stupnjevi djelovanja pojedinačno plinskog i parnog ciklusa te ukupni termodinamički stupanj djelovanja kombiniranog ciklusa. U programskom paketu Matlab razvijen je odgovarajući numerički postupak za određivanje maksimalnog termodinamičkog stupnja djelovanja kombiniranog ciklusa uz zadana ograničenja: temperature dimnih plinova na ulazu u plinsku turbinu te temperature kondenzacije vodene pare u parnom dijelu ciklusa (kondenzatoru). Za svaki promatrani slučaj iznađene su radne točke kombiniranog procesa pri kojima se postiže taj traženi maksimalni termodinamički stupanj djelovanja. Zaključeno je da se kombiniranim ciklusom povećava ukupno dobivena snaga i ukupni termodinamički stupanj djelovanja procesa. Za temperaturu dimnih plinova na ulazu u plinsku turbinu od 1400 °C maksimalni termodinamički stupanj djelovanja kombiniranog procesa iznosi 61,5 %. Nadalje, u radu je dana i jednadžba pomoću koje se može preliminarno odrediti maksimalni termodinamički stupanj djelovanja za različite vrijednosti odabranih parametara ΔTpinch i izentropskog stupnja djelovanja kompresora te plinske i parne turbine.
Abstract (english)
In this paper combined Brayton–Rankine cycle is mathematically simulated. It consists of the following components: compressor, combustion chamber, gas turbine, heat recovery steam generator, steam turbine, condenser and pump. Model of combined cycle is defined by 13 characteristic points on system components entries in and exits. Every point is defined by its temperature, pressure, enthalpy and entropy. Exchanged heat flows and net power output in system as well as total thermal efficiency of combined cycle were calculated based on the laws of energy preservation. Adequate numerical procedure was developed in “Matlab” software package in order to determine maximum thermal efficiency with given limitations: temperature of exhaust gases on the gas turbine input and steam condensing temperature. Combined cycle working points, by which wanted maximum of thermal efficiency is achieved, were obtained for every observed situation. It is concluded that the total power output and total thermal efficiency of combined cycle were increased. Equation is also given, which allows preliminary definition of maximum thermodynamic power efficiency for various ΔTpinch settings and isentropic efficiencies of compressor, gas turbine and steam turbine.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:239555
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsClosed access
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Created on2019-05-22 12:05:00