Mjerenje toplinske provodnosti kapljevina

Stjelja, Davor (2014) Mjerenje toplinske provodnosti kapljevina. = Measurement of heat conductivity of the liquids. Undergraduate thesis , Sveučilište u Zagrebu, Fakultet strojarstva i brodogradnje, UNSPECIFIED. Mentor: Zvizdić, Davor.

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Abstract (Croatian)

U sklopu ovoga rada osmišljena je i napravljena je mjerna linija za mjerenje toplinske provodnosti kapljevina u laboratorijima mjeriteljskog instituta MIKES u gradu Espoo, Finska. Svrha rada je objasniti teorijske osnove potrebne za mjerenje toplinske provodnosti kapljevina, te napraviti mjernu metodu koja koristi postojeću opremu toplinskih laboratorija bez dodatnih investicija. Za mjerenje toplinske provodnosti koristi se efekt samozagrijavanja platinskog otporničkog termometra (PRT), te se za određivanje toplinske provodnosti uspoređuju izmjerene temperature mjerene kapljevine sa temperaturama referentne kapljevine. \Nakon što je osmišljena mjerna linija, uspoređivanjem kapljevina poznatih svojstava ustvrdili smo njezinu valjanost.

Abstract

The concept of this paper was to develop a method for measuring the thermal conductivity of liquids, which was done in the laboratories of Centre for metrology and accreditation (MIKES) in the city of Espoo, Finland. The purpose of this work was to explain the theoretical bases required for measuring the thermal conductivity of liquids and to develop a method which can be applied in temperature laboratories from the existing equipment without further investment. This method uses the self-heating effect of a platinum resistance thermometer (PRT), and compares the measured temperatures from the measurand liquid to the reference liquid to determine the thermal conductivity of the measurand liquid. Once that the measurement method has been developed, a validation was made by comparing liquids of known thermal properties.

Item Type: Thesis (Undergraduate thesis)
Uncontrolled Keywords: toplinska provodnost; kapljevine; PRT; samozagrijavanje; mjeriteljstvo
Keywords (Croatian): thermal conductivity; liquids; PRT; self-heating; metrology
Divisions: 300 Department of Thermodynamics, Thermal and Process Engineering > 320 Chair of Thermal and Process Engineering
Date Deposited: 22 Sep 2014 18:00
Last Modified: 16 Oct 2015 12:49
URI: http://repozitorij.fsb.hr/id/eprint/2637

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