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master's thesis
Mjerenje toplinskog kapaciteta praškastih uzoraka
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. urn:nbn:hr:149:936848
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. (2022). Mjerenje toplinskog kapaciteta praškastih uzoraka (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:936848

Antonije Oreški, Gabriela. "Mjerenje toplinskog kapaciteta praškastih uzoraka." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:149:936848

Antonije Oreški, Gabriela. "Mjerenje toplinskog kapaciteta praškastih uzoraka." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:149:936848

Antonije Oreški, G. (2022). 'Mjerenje toplinskog kapaciteta praškastih uzoraka', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 18 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:936848

Antonije Oreški G. Mjerenje toplinskog kapaciteta praškastih uzoraka [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2022 [cited 2024 November 18] Available at: https://urn.nsk.hr/urn:nbn:hr:149:936848

G. Antonije Oreški, "Mjerenje toplinskog kapaciteta praškastih uzoraka", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:149:936848

Metadata
TitleMjerenje toplinskog kapaciteta praškastih uzoraka
Title (english)Measurement of heat capacity of powder samples
AuthorGabriela Antonije Oreški
MentorJuraj Šipušić (mentor)
Committee memberJuraj Šipušić (predsjednik povjerenstva)
Committee memberKrunoslav Žižek (član povjerenstva)
Committee memberVladimir Dananić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2022-09-29, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu izvedena je jednostavna aparatura za mjerenje toplinskog kapaciteta praškastih nevodljivih uzoraka. Postavljena je bilanca topline ispitivanog sustava, te je odziv sustava na puls grijanja konstantnom snagom uspješno opisan kao proces prvog reda. Temperatura uzorka tijekom pulsa grijanja se mijenja, odnosno ovisi o vremenu i o prostornim koordinatama. Rješavanje ovog problema je složeno zbog komplicirane geometrije grijača i uzorka, te nepoznavanja toplinskih svojstava uzorka (praškasti i porozni materijal) koje eksperimentom zapravo treba odrediti. Promjena temperature određena je mjerenjem, te je poslužila za određivanje toplinskog kapaciteta NaCl. Određena je vrijednost toplinskog kapaciteta 24-28% veća od literaturne referentne vrijednosti, a posljedica je neuračunatih gubitaka topline u okolinu, akumulacije topline u grijaču i drugih nesavršenosti aparature.
Abstract (english)
In this work, a simple apparatus for measuring the heat capacity of powdered non-conductive samples was developed. The heat balance of the tested system was established, and the response of the system to a constant power heating pulse was successfully described as a first-order process. The temperature of the sample changes during the heating pulse, i.e. it depends on time and spatial coordinates. Solving this problem is complex due to the complicated geometry of the heater and the sample, and the lack of knowledge of the thermal properties of the sample (powder and porous material), which should actually be determined by experiment. The change in temperature was determined by measurement, and was used to determine the heat capacity of NaCl. The determined value of the heat capacity is 24-28% higher than the reference value in the literature, and it is the result of unaccounted heat losses to the environment, heat accumulation in the heater and other imperfections of the apparatus.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:936848
Study programmeTitle: Materials Science and Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-03-29 09:28:54