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doctoral thesis
Optimalno korištenje otpadne topline u parnoturbinskom ciklusu
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2010. urn:nbn:hr:235:110760
Čehil, Mislav
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

Čehil, M. (2010). Optimalno korištenje otpadne topline u parnoturbinskom ciklusu (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:110760

Čehil, Mislav. "Optimalno korištenje otpadne topline u parnoturbinskom ciklusu." Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2010. https://urn.nsk.hr/urn:nbn:hr:235:110760

Čehil, Mislav. "Optimalno korištenje otpadne topline u parnoturbinskom ciklusu." Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2010. https://urn.nsk.hr/urn:nbn:hr:235:110760

Čehil, M. (2010). 'Optimalno korištenje otpadne topline u parnoturbinskom ciklusu', Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 27 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:110760

Čehil M. Optimalno korištenje otpadne topline u parnoturbinskom ciklusu [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2010 [cited 2024 December 27] Available at: https://urn.nsk.hr/urn:nbn:hr:235:110760

M. Čehil, "Optimalno korištenje otpadne topline u parnoturbinskom ciklusu", Doctoral thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2010. Available at: https://urn.nsk.hr/urn:nbn:hr:235:110760

Metadata
TitleOptimalno korištenje otpadne topline u parnoturbinskom ciklusu
Title (english)Optimal waste heat utilization in the bottom steam-water cycle
AuthorMislav Čehil
MentorŽeljko Bogdan (mentor)
Committee memberDražen Lončar (predsjednik povjerenstva)
Committee memberŽeljko Bogdan (član povjerenstva)
Committee memberZmagoslav Prelec (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2010-11-26, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Process Energy Engineering
Universal decimal classification
(UDC)		621 - Mechanical engineering. Nuclear technology. Machinery
Abstract
U radu je napravljen termodinamički model parnoturbinskog postrojenja koje se nalazi unutar kombiniranog postrojenja za proizvodnju električne energije. Kako bi se pronašao optimalan raspored izmjenjivačkih površina unutar generatora pare na otpadnu toplinu s više krugova pare, napravljena je mreža izmjenjivača topline unutar koje je svaki krug pare ili međupregrijač predstavljen s jednim stupcem u matrici izmjenjivača. Na taj način omogućen je proizvoljan raspored izmjenjivačkih površina unutar generatora pare s više krugova pare i s međupregrijanjem. Optimizacijska rutina određuje entalpijske priraste unutar svakog izmjenjivača te tlakove i masene protoke unutar svakog kruga pare. Funkciju cilja predstavlja maksimalan termodinamički stupanj iskoristivosti u slučaju termodinamičke optimizacije, a u slučaju termoekonomske optimizacije funkciju cilja čine minimalni termoekonomski gubici unutar parnoturbinskog ciklusa. Korišteni su genetski algoritmi kao robusna metoda traženja ekstrema funkcije cilja. U odnosu na dosadašnje radove u dostupnoj znanstvenoj literaturi, pokazano je kako postoje bolje konfiguracije generatora pare na otpadnu toplinu, uglavnom u obliku paralelnog smještaja izmjenjivača različitih krugova pare ili međupregrijača. Termodinamički i termoekonomski najbolje postrojenje je postrojenje s tri kruga pare i međupregrijanjem.
Abstract (english)
In this work a thermodynamic model of a steam turbine power plant that is part of a combined cycle power plant was made. In order to find the best configuration of the heat exchangers inside the multi pressure heat recovery steam generator, heat exchangers network was made. In the heat exchangers network each pressure level of steam as well as steam superheating is presented with one separate column in the heat exchangers network. It allowed the arbitrary configuration of the heat exchangers within the multi pressure heat recovery steam generator. Optimization routine determines the enthalpy increment within each heat exchanger as well as pressure and steam mass flow for each pressure level. In the case of thermodynamic optimization, objective function is represented by the maximum thermodynamic efficiency, but in the case of thermoeconomic optimization objective function is made of minimal thermoeconomic losses in the steam turbine plant. Genetic algorithms were used as a robust method of finding an extreme of the objective function. In comparison to previous scientific research, it is shown that there are better configurations of the multi pressure heat recovery steam generator, mainly in the form of parallel position of heat exchangers of different pressure levels. Thermodynamic and thermoeconomic optimization showed that the best plant is the one with three steam pressure levels with superheating.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:110760
Study programmeTitle: Mechanical Engineering and Naval Architecture
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, područje tehničkih znanosti (doktor/doktorica znanosti, područje tehničkih znanosti)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-06-17 11:14:03