20.500.12556/RUL-187484 Razvoj brezkontaktnega radialnega tesnila za uporabo v sušilnem stroju Development of a non-contact radial seal for use in a tumble dryer Magistrsko delo obravnava razvoj radialnega tesnila za uporabo v sušilnem stroju za perilo. Namen je ločiti vstopni in izstopni del sistema in zmanjšati mešanje suhega ter vlažnega zraka, hkrati pa tesnilo ne sme povzročati dodatnega mehanskega upora oziroma mora biti ta minimalen. Zaradi vrtenja bobna, proizvodnih toleranc in dinamičnih pomikov med delovanjem popolna zatesnitev ni mogoča, zato je bila raziskava usmerjena v razvoj geometrije, ki zagotavlja čim večji upor prehajanju zraka ob minimalnih mehanskih izgubah. V okviru dela je bil izveden pregled brezkontaktnih tesnil s poudarkom na labirintnih izvedbah. Učinkovitost različnih geometrij je bila analizirana z uporabo numeričnih simulacij, na podlagi katerih so bili ovrednoteni vplivi velikosti reže, oblike zob in zasnove tesnila na učinkovitost tesnila. Za eksperimentalno vrednotenje izbranih rešitev je bila zasnovana in izdelana merilna proga, na kateri so bile izvedene meritve tlačne razlike in pretoka zraka. Rezultati so pokazali, da je mogoče z ustrezno geometrijo tesnila bistveno povečati tlačne izgube in zmanjšati pretok skozi tesnilno režo. Primerjava numeričnih in eksperimentalnih rezultatov je potrdila uporabnost metod CFD pri razvoju radialnih tesnil za industrijske aplikacije. This master's thesis addresses the development of a radial seal for use in a household tumble dryer. The purpose of the seal is to separate the inlet and outlet sections of the system and reduce the mixing of dry and humid air while minimizing additional mechanical resistance to the rotating drum. Due to drum rotation, manufacturing tolerances, and dynamic displacements during operation, complete sealing cannot be achieved. Therefore, the research focused on the development of a seal geometry capable of providing maximum resistance to air leakage while maintaining minimal mechanical losses. A review of non-contact sealing technologies was conducted, with particular emphasis on labyrinth seals. The performance of different seal geometries was evaluated using numerical CFD simulations, which were used to investigate the influence of clearance size, tooth geometry, and overall seal design on sealing performance. For the experimental evaluation of selected solutions, a dedicated test rig was designed and manufactured, enabling measurements of pressure drop and airflow rate. The results demonstrated that an appropriate seal geometry can significantly increase pressure losses and reduce airflow through the sealing clearance. The comparison of numerical and experimental results confirmed the applicability of CFD methods for the development and optimization of radial seals intended for industrial applications. labirintno tesnilo učinkovitost tesnjenja računalniška dinamika tekočin sušilni stroj pretok zraka tlak labyrinth seal sealing effectiveness computational fluid dynamics tumble dryer airflow pressure true false false [J. Štangelj] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-09-11 08:31:17 2026-09-11 08:31:19 2026-09-18 13:15:21 0000-00-00 00:00:00 2026 0 Ljubljana 0 XX, 54 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532:62-762.8:648.336(043.2) 289958 291626243 49766.pdf 49766.pdf 1 5813FA246959893C0D12CC88610EA3B8 3e4f1c4a40cc1ebe114250e30c6d39dc6e9a1acaf68ab36d8583c259b6277bfc 5f204cda-adaa-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=247118 Fakulteta za strojništvo 0 0 0