20.500.12556/RUL-140187 Vpliv spremembe tlaka sveže pare na hitrostne razmere v prvi stopnji parne turbine tlačnovodne jedrske elektrarne Effect of fresh steam pressure variation on the speed conditions in the first stage of a steam turine of a pressurised water nuclear power plant V zaključni nalogi je obravnavana tlačnovodna jedrska elektrarna, ki temelji na enakem principu delovanja kakor jedrska elektrarna Krško. Jedrski sistem smo iz teorije pretvorili v računski model v programskem orodju IPSEpro. Pri analizi smo pod drobnogled vzeli hitrostne razmere v visokotlačni turbini ter preverili, kako padec tlaka sveže pare, ki se dovaja iz uparjalnika, vpliva na hitrostne razmere prve turbinske stopnje visokotlačne parne turbine. Z analitično določenimi trikotniki hitrosti prve turbinske stopnje pri začetnem tlaku smo primerjali trikotnike hitrost pri spremenjenem tlaku. Ugotovili smo, da se s padcem tlaka znižuje izstopna hitrost pare iz turbine, spremenijo se koti vektorjev hitrosti, kar lahko negativno vpliva na izkoristek same parne turbine s tem pa tudi na izkoristek jedrske elektrarne. The final thesis deals with a pressurised water nuclear power plant based on the same operating principle as the Krško nuclear power plant. The nuclear system was converted from theory to a computational model in the IPSEpro software tool. The analysis looked at the speed conditions in the high-pressure turbine and examined how the pressure drop of the fresh steam coming from the evaporator affects the speed conditions of the first turbine stage of the high-pressure steam turbine. Using the analytically determined first turbine stage velocity triangles at the initial pressure, the velocity triangles at the changed pressure were compared. We have found that as the pressure drops, the exit velocity of the steam from the turbine decreases and the angles of the velocity vectors change, which can have a negative impact on the efficiency of the steam turbine itself and thus on the efficiency of the nuclear power plant. jedrska elektrarna parna turbina prva turbinska stopnja enakotlačna stopnja trikotniki hitrosti nuclear power plant steam turbine first turbine stage equal pressure stage velocity triangles true false false [N. Reberšek] Slovenski jezik Angleški jezik Zaključna naloga 2022-09-13 08:30:36 2022-09-13 08:30:42 2023-10-27 13:40:03 0000-00-00 00:00:00 2022 0 Ljubljana 0 XIV, 36 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.039:621.1(043.2) 244837 133740291 19179.pdf 19179.pdf 1 3D971AA44295BC7449F7DDE354286C3F db44f0ffa7c5f6fd4ddf8e8d01d879f76cb9fff6896713d1258aeb74583d2a10 86f852f6-332d-11ed-92af-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=160875 Fakulteta za strojništvo 0 0 0