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master's thesis
Optimizacija spajanja urbanih toplinskih izvora na postojeće centralizirane toplinske sustave
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. urn:nbn:hr:235:956589
Čuljak, Kristijan
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

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

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Čuljak, K. (2021). Optimizacija spajanja urbanih toplinskih izvora na postojeće centralizirane toplinske sustave (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:956589

Čuljak, Kristijan. "Optimizacija spajanja urbanih toplinskih izvora na postojeće centralizirane toplinske sustave." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:235:956589

Čuljak, Kristijan. "Optimizacija spajanja urbanih toplinskih izvora na postojeće centralizirane toplinske sustave." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:235:956589

Čuljak, K. (2021). 'Optimizacija spajanja urbanih toplinskih izvora na postojeće centralizirane toplinske sustave', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 18 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:956589

Čuljak K. Optimizacija spajanja urbanih toplinskih izvora na postojeće centralizirane toplinske sustave [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2021 [cited 2024 December 18] Available at: https://urn.nsk.hr/urn:nbn:hr:235:956589

K. Čuljak, "Optimizacija spajanja urbanih toplinskih izvora na postojeće centralizirane toplinske sustave", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:235:956589

Metadata
TitleOptimizacija spajanja urbanih toplinskih izvora na postojeće centralizirane toplinske sustave
Title (english)Optimisation of urban waste heat source integration into existing district heating systems
AuthorKristijan Čuljak
MentorTomislav Pukšec (mentor)
Committee memberDamir Dović (predsjednik povjerenstva)
Committee memberMiro Hegedić (član povjerenstva)
Committee memberTomislav Pukšec (član povjerenstva)
Committee memberDarko Smoljan (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2021-05-13, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Process Energy Engineering
Abstract
U diplomskom radu prikazan je jedan od načina spajanja urbanih izvora otpadne topline u centralizirane toplinske sustave (CTS). Prema literaturi postoji oko 1,2 EJ dostupne niskotemperaturne otpadne topline koja se ispušta u okoliš. Trenutne temperaturne razine CTS-a u Republici Hrvatskoj, ali i diljem Europe ne dozvoljavaju direktnu rekuperaciju otpadne topline. Zbog toga, ali i činjenice postojanja sve većeg udjela obnovljivih izvora energije u elektroenergetskom miksu, sve češće se za ovakvu integraciju otpadne topline upotrebljavaju dizalice topline. Integracija dizalica topline i izmjenjivača topline u smislu iskorištavanja otpadne topline, izrađena je pomoću modela pinch metode. Ona se zasniva na vrednovanju izmjene topline između dviju struja pomoću minimalne temperaturne razlike između njih. U radu je njen proračun potpomognut programskim jezikom Visual Basic for Applications (VBA) u sklopu računalnog paketa Microsoft Excela. Također, osim samog VBA, u radu je za potrebe mapiranja urbanih toplinskih izvora korišten i QGIS alat. Urbani toplinski izvori koji su mapirani jesu: rashladni uređaji supermarketa, sustavi hlađenja prostora trgovačkih centara i supermarketa te trafostanice. Pomoću pinch metode ispitani su uvjeti spajanja ovih izvora na tri različita temperaturna režima CTS-a. Njome je dobiven termodinamički uvid u mogućnosti spajanja: načini rekuperacije, vrijeme u godini kada ju je moguće rekuperirati ju te toplinski množitelj za svaki od objekata i scenarija. Pokazano je da su izvori topline rashladnih sustava supermarketa i trafostanica ekonomski i termodinamički izvedivi.
Abstract (english)
In this master thesis, the concept of urban waste heat sources was presented. In Europe, there is a huge potential for waste heat. Some approximations are cited about 1,2 EJ of waste heat available. The challenge is to integrate these sources to the newest generations of district heating networks. After a literature review, the method is represented with the model of every chosen urban heat source – supermarkets, shopping malls, and power substations. Integration of all these sources to the network was implemented with the pinch method. The pinch method was supported in Visual Basic for Applications (VBA) as one part of MS Excel. By implementing a pinch method, two ways of utilizing were implemented. First is the direct use with heat exchanger and second by using heat pumps. The results are thermodynamic and economic quantification of urban heat sources in different DH networks. The most economically feasible heat sources are refrigeration systems of supermarkets and power substations.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:956589
ProjectNumber: 857811
Title: Renewable and Waste Heat Recovery for Competitive District Heating and Cooling Networks
Acronym: REWARDHeat
Leader: Neven Duić
Jurisdiction: Italy
Funder: Europska komisija
Funding stream: Horizon2020
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 conditionsOpen access
Terms of useLicence In copyright icon
Created on2021-05-11 11:14:52