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undergraduate thesis
Komora za duboko zamrzavanje mesa nakon predohlađivanja
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. urn:nbn:hr:235:677995
Padovan, Tomislav
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

Padovan, T. (2014). Komora za duboko zamrzavanje mesa nakon predohlađivanja (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:677995

Padovan, Tomislav. "Komora za duboko zamrzavanje mesa nakon predohlađivanja." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. https://urn.nsk.hr/urn:nbn:hr:235:677995

Padovan, Tomislav. "Komora za duboko zamrzavanje mesa nakon predohlađivanja." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. https://urn.nsk.hr/urn:nbn:hr:235:677995

Padovan, T. (2014). 'Komora za duboko zamrzavanje mesa nakon predohlađivanja', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 09 October 2024, https://urn.nsk.hr/urn:nbn:hr:235:677995

Padovan T. Komora za duboko zamrzavanje mesa nakon predohlađivanja [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2014 [cited 2024 October 09] Available at: https://urn.nsk.hr/urn:nbn:hr:235:677995

T. Padovan, "Komora za duboko zamrzavanje mesa nakon predohlađivanja", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:235:677995

Metadata
TitleKomora za duboko zamrzavanje mesa nakon predohlađivanja
Title (english)Room for preecooled meat deep freezing
AuthorTomislav Padovan
MentorTonko Ćurko (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2014-09-24, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Rashladni sustav za duboko zamrzavanje važan je element u mesnoj industriji. Meso se zamrzava velikom brzinom u tunelu i tako se formiraju mali kristali leda, čime se ne narušava biološka struktura mesa. Tunel za duboko zamrzavanje je hladionica s intezivnim strujanjem zraka u kojem se meso zamrzava i hladi do -18 ili -20 °C u vremenskom trajanju od 18 sati. To se postiže rashladnim sustavom s amonijakom (R717) kao radnom tvari, te dvostupanjskom kompresijom i dvostupanjskim prigušivanjem s međuhladnjakom (mješalištem). Hladionica je smještena u sklopu složenog rashladnog postrojenja i izrađena je od predfabriciranih poliuretanskih panela. U uvodnom dijelu rada ukratko je opisana uloga tunela za duboko smrzavanje mesa i navedene su karakteristike amonijaka kao radne tvari. Napravljen je proračun rashladnog učina hladionice i tehnički proračun komponenti sustava. Na kraju je prikazana shema spajanja i automatske regulacije te dispozicijski crtež sustava.
Abstract (english)
Deep freezing cooling system is an important element in the meat processing industry. The meat is frozen in short time in the tunnel and thus form small ice crystals, which does not disturb the biological structure of meat. Tunnel freezer is cold room with intensive air flow in which the meat is frozen and cooled to -18 or -20 °C within 18 hours. This is achieved by a cooling system with ammonia (R717) as a refrigerant, with two stage compression and two stage throttling with intercooler (mixing tank). Cold rooms are located within a complex refrigeration system made of pre-cast panels of polyurethane. In the introductory part of the paper, the role of deep freezig chambers is briefly described in the context of meat processing industry, also the characteristics of ammonia as a refrigerant are introduced. Furthermore, a calculation of refrigeration capacitiy for cold rooms and technical calculation of system components is carried out. Finally, there is the diagram of connection and automatic regulation with system disposition drawing.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:677995
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 conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2019-05-22 11:52:53