20.500.12556/DKUM-46595 NAPRAVA ZA DOLOČANJE SPECIFIČNE TOPLOTNE PREVODNOSTI TRDNIN S KONTROLO TEMPERATURE ZRAKA NA MEJNIH PLOSKVAH DEVICE FOR THE DETERMINATION OF THE SPECIFIC HEAT CONDUCTIVITY OF SOLIDS Meritve toplotne prevodnosti trdnin so zahtevne, saj k prenosu toplote prispevajo prevajanje, konvekcija in sevanje. Izdelali smo merilnik, kjer lahko vpliv konvekcije in sevanja minimiziramo. Merilnik je sestavljen iz dveh izoliranih zra?nih komor, med kateri postavimo merjenec. Temperaturo komor reguliramo z bakrenim spiralnim grelnikom, skozi katerega te?e voda. Specifi?no toplotno prevodnost dolo?imo z meritvijo masnih pretokov vode, ki segreva zrak v komori z visoko temperaturo in ohlaja zrak v komori z nizko temperaturo, temperaturnih razlik vtekajo?e in iztekajo?e vode v obeh komorah ter temperaturne razlike med komorama. The specific heat coefficient is relatively difficult to determine, as heat can be transferred by conduction, convection and radiation. We designed a device, in which the impact of radiation and convection is negligible. The device consists of two separate air chambers with the test object between them. The temperatures of the chambers are regulated via water filled copper coils. Specific heat conductivity is determined from the measured mass fluxes of water and temperature difference between water going into the chamber and water going out of the chamber and temperature difference between air temperature in chamber with high temperature and chamber with low temperature. toplotna prevodnost toplotni tok naprava za določanje specifične toplotne prevodnosti trdnin termodinamika heat transfer heat flow device for determining the specific heat coefficient thermodynamics true true false [N. Duh] Slovenski jezik Angleški jezik Delo diplomskega seminarja/zaključno seminarsko delo/naloga 2014-10-13 18:35:36 2014-10-23 13:11:14 2022-05-18 03:07:16 2021-05-02 03:35:55 2014 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 53(043.2) 20886280 URN:SI:UM:DK:FEMGWOWQ UNI_Duh_Nejc_2014.pdf UNI_Duh_Nejc_2014.pdf 1 4908949CD3FE4953DF1C7E47CED840D4 8613142fc26358164532c6d23101ff305d1c3beb100e0b5b9a237318415f09a2 60b48b95-7c0b-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=68419 Fakulteta za naravoslovje in matematiko 0 0 0