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undergraduate thesis
Dinamička simulacija rada mehaničkog termoekspanzijskog ventila u rashladnom sustavu
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2024. urn:nbn:hr:235:672686
Brđović, Bruno
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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Brđović, B. (2024). Dinamička simulacija rada mehaničkog termoekspanzijskog ventila u rashladnom sustavu (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:672686

Brđović, Bruno. "Dinamička simulacija rada mehaničkog termoekspanzijskog ventila u rashladnom sustavu." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2024. https://urn.nsk.hr/urn:nbn:hr:235:672686

Brđović, Bruno. "Dinamička simulacija rada mehaničkog termoekspanzijskog ventila u rashladnom sustavu." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2024. https://urn.nsk.hr/urn:nbn:hr:235:672686

Brđović, B. (2024). 'Dinamička simulacija rada mehaničkog termoekspanzijskog ventila u rashladnom sustavu', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 30 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:672686

Brđović B. Dinamička simulacija rada mehaničkog termoekspanzijskog ventila u rashladnom sustavu [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2024 [cited 2024 December 30] Available at: https://urn.nsk.hr/urn:nbn:hr:235:672686

B. Brđović, "Dinamička simulacija rada mehaničkog termoekspanzijskog ventila u rashladnom sustavu", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:235:672686

Metadata
TitleDinamička simulacija rada mehaničkog termoekspanzijskog ventila u rashladnom sustavu
Title (english)Dynamic simulation of operation of a mechanical thermostatic expansion valve in a refrigeration system
AuthorBruno Brđović
MentorNenad Ferdelji (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2024-02-29, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Process Energy Engineering
Abstract
Rashladni sustavi koriste se za snižavanje i održavanje temperature niže od okoline. Imaju široku primjenu u prehrambenoj industriji, domaćinstvu, trgovini, transportu, klimatizaciji itd. Za kvalitetan rad rashladnih sustava potrebno je odabrati optimalne komponente i parametre rada sustava. U ovom završnom radu napravljen je dinamički model isparivača i termoekspanzijskog ventila jednostavnog rashladnog sustava pri promjenjivom opterećenju. Cilj ovog rada je analizirati nestacionarni proces koji se odvija u isparivaču gdje je promjena opterećenja isparivača ostvarena promjenom brzine strujanja zraka. Analizirana je dinamika sustava pri brzinama strujanja zraka, a koje iznose 4 m/s, 5 m/s, te 2,5 m/s. Za svaku brzinu strujanja analiziran je interval od 600 sekundi u kojem je postignuto stacionarno stanje.Također, analiziran je rad sustava pri promjeni koeficijenta prijelaza topline isparavanja.Pomoću matematičkog modela isparivača i termoekspanzijskog ventila, te numeričke metode konačnih razlika, u programskom jeziku Python analiziran je utjecaj raznih parametara na sustav.
Abstract (english)
Refrigeration systems are used to lower and maintain temperatures below the ambient level. They have wide applications in the food industry, household, commerce, transportation, air conditioning, etc. For the proper functioning of refrigeration systems, it is necessary to select optimal components and system operating parameters. In this final paper, a dynamic model of an evaporator and a thermostatic expansion valve of a simple refrigeration system with variable load was developed. The aim of this paper is to analyze the non-stationary process that occurs in the evaporator, where the change in evaporator load is achieved by changing the air flow velocity. The system dynamics were analyzed at air flow velocities of 4 m/s, 5 m/s, and 2.5 m/s. For each flow velocity, a 600-second interval was analyzed to reach a steady state. Also, the operation of the system was analyred during changesin the evaporation heat transfer coefficient. Using the mathematical model of the evaporator and thermostatic expansion valve, as well as the finite difference numerical method implemented in the Python programming language, the influence of various parameters on the system was analyzed.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:672686
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-02-27 20:36:30