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undergraduate thesis
Mjerenje toplinskih svojstava praškastih uzoraka
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. urn:nbn:hr:149:781656
Antonije Oreški, Gabriela
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Antonije Oreški, G. (2020). Mjerenje toplinskih svojstava praškastih uzoraka (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:781656

Antonije Oreški, Gabriela. "Mjerenje toplinskih svojstava praškastih uzoraka." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:781656

Antonije Oreški, Gabriela. "Mjerenje toplinskih svojstava praškastih uzoraka." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:149:781656

Antonije Oreški, G. (2020). 'Mjerenje toplinskih svojstava praškastih uzoraka', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:149:781656

Antonije Oreški G. Mjerenje toplinskih svojstava praškastih uzoraka [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2020 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:149:781656

G. Antonije Oreški, "Mjerenje toplinskih svojstava praškastih uzoraka", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:149:781656

Metadata
TitleMjerenje toplinskih svojstava praškastih uzoraka
Title (english)Measurement of thermal properties of powder samples
AuthorGabriela Antonije Oreški
MentorJuraj Šipušić (mentor)
Committee memberJuraj Šipušić (predsjednik povjerenstva)
Committee memberKrunoslav Žižek (član povjerenstva)
Committee memberVanja Kosar (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2020-09-23, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Sastavljena je aparatura za mjerenje toplinskog kapaciteta praškastih krutina koje su električni izolatori. Uzorak u mjernoj ćeliji je u neposrednom doticaju s električnim grijalom kojim se izaziva skokomična odnosno pulsna promjena ulazne veličine (snage grijala). Određena je dinamika odziva sustava na skokomičnu promjenu snage grijala, te je pokazano da se odziv može opisati modelom prvog reda. U slučaju toplinski slabo vodljivih praškastih (poroznih) uzoraka dolazi do složenijeg odziva što nije dalje proučavano. Na odziv procesa prvog reda može se primijeniti već u kalorimetriji dobro poznati model „1-τ“, kojim se određuje toplinski kapacitet, C [J K^-1], mjerne ćelije s uzorkom. Određen je toplinski kapacitet staklene mjerne ćelije s bakrenim vodičem i otporničkom Kanthal® žicom te uzorkom natrijeva klorida (NaCl) koji iznosi 114 J K^-1. U daljnjem radu potrebno je odrediti toplinski kapacitet mjerne ćelije, te je tada moguće izračunati specifični toplinski kapacitet uzorka.
Abstract (english)
An apparatus for measuring the heat capacity of powdered solids (electrical insulators) has been assembled. The sample contained in the measuring cell is in direct contact with the electric heater. The dynamics of the system response to a sudden change in heating power was determined, and it was shown that the response can be described by a first-order model. In the case of thermally poorly conductive (porous) powder samples, a more complex response occurs, which has not been further studied. The well-known "1-τ" model can be applied to the response of the first-order process. The heat capacity of a measuring cell (glass container with a copper conductor, Kanthal® resistor wire and a known mass of sodium chloride (NaCl) sample) had been determined and equals 114 J K^-1. In further work, it is necessary to determine the heat capacity of the empty measuring cell, and then it is possible to calculate the specific heat capacity of the sample.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:781656
Study programmeTitle: Materials Science and Engineering - Undergraduate study
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
Embargo expiration date: 2022-09-01
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Created on2023-05-02 08:41:38