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undergraduate thesis
Hlađenje kliznog ležaja pogona mlina
završni rad
2016. urn:nbn:hr:167:304145
Radeljić, Ana
University of Split
Faculty of Chemistry and Technology

Cite this document

Radeljić, A. (2016). Hlađenje kliznog ležaja pogona mlina : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:304145

Radeljić, Ana. "Hlađenje kliznog ležaja pogona mlina : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2016. https://urn.nsk.hr/urn:nbn:hr:167:304145

Radeljić, Ana. "Hlađenje kliznog ležaja pogona mlina : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2016. https://urn.nsk.hr/urn:nbn:hr:167:304145

Radeljić, A. (2016). 'Hlađenje kliznog ležaja pogona mlina : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 22 December 2024, https://urn.nsk.hr/urn:nbn:hr:167:304145

Radeljić A. Hlađenje kliznog ležaja pogona mlina : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2016 [cited 2024 December 22] Available at: https://urn.nsk.hr/urn:nbn:hr:167:304145

A. Radeljić, "Hlađenje kliznog ležaja pogona mlina : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:167:304145

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Metadata
TitleHlađenje kliznog ležaja pogona mlina : završni rad
Title (english)Cooling of the plain bearing of mill drive : bachelor thesis
AuthorAna Radeljić
MentorVanja Martinac (mentor)
Committee memberNenad Kuzmanić (predsjednik povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
Split
Defense date and country2016-07-13, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Svrha ovog rada je ispitati da li industrijski izmjenjivač topline s učvršćenim snopom cijevi, tip 1-2, zadovoljava za hlađenje mineralnog ulja kojim se podmazuju klizni ležajevi kugličnog mlina. Kroz cijevni snop od 44 bakrene cijevi vanjskog promjera 10 x 1 mm, duljine 404 mm, prolazi rashladna voda volumnog protoka 1 m3/h, u dva prolaza. Oko cijevi u plaštu struji mineralno ulje volumnog protoka 8 L/min. Raspored cijevi je u trokutu s korakom od 13 mm, a broj pregrada u plaštu je 6. Rezultati ispitivanja ukazuju da je režim strujanja u cijevima i u plaštu laminaran (Re < Re,kr). Do porasta promjene temperature ulja, tU, od 5,5 oC, potrebna površina za izmjenu topline je manja u odnosu na raspoloživu površinu te višecijevni izmjenjivač navedenih karakteristika zadovoljava za hlađenje mineralnog ulja. Porastom promjene temperature ulja, tU, iznad 5,5 oC, potrebna površina za izmjenu topline raste u odnosu na raspoloživu površinu te višecijevni izmjenjivač navedenih karakteristika ne zadovoljava za hlađenje mineralnog ulja.
Abstract (english)
The purpose of this project is to examine whether the industrial shell and tube heat exchanger, 2-pass tube side, suits the process of cooling the mineral oil used to lubricate the plain bearing of a mill drive. The cooling water, amounting to 1 m3 of hourly discharge, flows in two passageways through the pipe bundle which consists of 44 copper pipes with the outer diameter of 10 x 1 mm and the length of 404 mm. Mineral oil, with the discharge rate of 8 L/min, flows inside the shell and around the tube. The pipes are laid out in a triangular fashion and pitched 13 mm apart. There are 6 baffles inside the shell. The results of examination indicate the laminar flow inside the tubes and shell (Re < Re,c). Until the oil temperature, tU, rises by 5,5 oC the surface required to exchange the heat is smaller than the total available surface; a multi-tube exchanger possessing the aforementioned characteristics exhibits satisfactory rates of cooling the mineral oil. As the oil temperature, tU, rises upward of 5,5 oC the surface required to exchange heat also rises compared with available surface, while the multi-tube exchanger no longer fulfills the requirements for cooling the mineral oil.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:304145
Study programmeTitle: Chemical Technology; specializations in: Chemical Engineering, Environmental Protection
Course: Chemical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2016-09-26 11:55:04