20.500.12556/RUL-101705 Eksperimentalna in numerična analiza cevno-ploščnega uparjalnika An experimental and numerical analysis of plate-tube evaporator Opisana je izvedba eksperimenta testiranja cevno-ploščnega uparjalnika, po katerem je bila zasnovana in izvedena numerična analiza s programsko opremo ANSYS Fluent. Rezultati temperaturnega polja s površine uparjalnika, posnetega z IR kamero ter rezultati post-procesiranja numeričnega preračuna, se po pričakovanjih razlikujejo predvsem zaradi potrebne prilagoditve geometrije numeričnega modela in zaradi nepopolnega kontakta med deli uparjalnika. Anomalije v rezultatih eksperimentalnega dela kažejo na razlike med kontakti folije, cevi in plošče uparjalnika. Temperaturna razlika medija med vstopom in izstopom iz uparjalnika je primerljiva po obeh metodah. Analiza s predstavljenim numeričnim modelom je primerna za nadaljnje raziskave pri izdelavi konstrukcijsko podobnih prenosnikih toplote. The process of carrying out an experiment of testing the plate-tube evaporator, on which a numeric analysis with the ANSYS Fluent software was based on, is described. As expected, the results of the temperature field from the surface of the evaporator taken with an IR camera, and the results of the post-processing numeric recalcultation differ, mostly due to the numerical model geometry adjustment requirement and the presence of imperfect fit of the evaporator's components. The anomalies in the experimental results point to the irregularities between the contacts of the foil, tube and the plate of the evaporator. The temperature difference between entering and exiting the evaporator is comparable using both methods. Presented numerical model analysis is suitable for further research in producing heat exchangers with a similar construction. cevno-ploščni uparjalnik naravna konvekcija brezdimenzijska števila prenosa toplote IR kamera računalniška dinamika tekočin zakoni ohranitve plate-tube evaporator natural convection dimensionless numbers of heat transfer IR camera computer fluid dynamcs conservation law true false false [N. Tomažič] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2018-06-29 07:45:22 2018-06-29 07:45:24 2022-08-14 03:45:50 0000-00-00 00:00:00 2018 0 Ljubljana 0 XXII, 54 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 004.942:519.876.5:536.24(043.2) 204639 16133915 1816.pdf 1816.pdf 1 BC7E97A3EF1DE171D681792B2723D762 b83da302ba10be2410a9ecaec040904a7334774e61788ab2cafb6ffbc244dc7d 5d4e5543-a1b5-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=111850 Fakulteta za strojništvo 0 0 0