20.500.12556/DKUM-91815 Preračun izkoristka kogeneracije v podjetju Pomurske mlekarne d.d. magistrsko delo Efficiency calculation of the cogeneration system at Pomurske mlekarne d.d. V magistrskem delu je analizirano delovanje soproizvodnje toplote in električne energije v podjetju Pomurske mlekarne d.d. Uporablja se plinska turbina za proizvodnjo električne energije, iz dimnih plinov pa se zajema toplota s pomočjo toplotnih izmenjevalnikov. Glavni cilj raziskave je določiti toplotni izkoristek sistema pri različnih delovnih parametrih, kot so temperatura gretja dimnih plinih v kanalskim gorilniku, moč elektrarne in tlak pare v uparjalniku. Rezultati so pokazali, da je toplotni izkoristek sistema v območju med 20 % in 40 %. Potrjeno je, da uporaba kanalskega gorilnika poveča izkoristek, saj dvigne temperaturo dimnih plinih in poveča prenos toplote. Moč plinske elektrarne sama po sebi ni imela bistvenega vpliva na toplotni izkoristek, saj se pri manjši moči porabi manj zemeljskega plina. Najnižji izkoristek je zaznan v primerih, ko pregrevanje dimnih plinov ni bilo izvedeno. Skupni izkoristek sistema je dosegal do 70 %, kar potrjuje učinkovito delovanje sistema soproizvodnje toplotne in električne energije (SPTE). Rezultati prispevajo k optimizaciji parametrov sistema ter izboljšanju energetske učinkovitosti, kar ima pomembno vlogo pri trajnostnem upravljanju virov. In this master's thesis, the operation of combined heat and power (CHP) production at Pomurske mlekarne d.d was analyzed in detail. A gas turbine is used for electricity generation, while heat is recovered from flue gases using heat exchangers. The main objective of the research was to determine the thermal efficiency of the system under various operating parameters, such as the burner exhaust temperature, power output of the plant, and steam pressure from the evaporator. The results showed that the system's thermal efficiency ranged between 20% and 40%. It was confirmed that using a duct burner increases efficiency by further heating the flue gases and enhancing heat transfer. The gas power plant’s load itself did not significantly affect efficiency, as less natural gas is consumed at lower loads. The lowest efficiency was observed in cases where flue gas preheating was not performed. The overall system efficiency reached up to 70%, confirming the effective operation of the combined heat and power (CHP) system. The results contribute to optimizing system parameters and improving energy efficiency, which plays a significant role in sustainable resource management. soproizvodnja toplotne in električne energije proizvodnja pare toplotni izmenjevalnik uparjalnik plinska turbina toplotni izkoristek prenos toplote combined heat and power (CHP) steam production heat exchanger evaporator gas turbine thermal efficiency heat transfer true true false [P. Polanec] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-02-09 15:45:10 2025-02-26 10:45:15 2025-03-04 03:09:49 0000-00-00 00:00:00 2025 0 Maribor 0 Maribor 1 spletni vir (1 datoteka PDF (XII, 74 f.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 662.994:621.438(043.2) 227835395 MAG_Polanec_Petra_2025.pdf MAG_Polanec_Petra_2025.pdf 1 12A1AFA7FF7E8F479C734406BDA5101C 0e41b6d07c84f6386840cee646598f76c8bb93d9823da347fe3838df06220dcf 7cb32176-f408-11ef-a5fa-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=188827 Fakulteta za strojništvo 0 0 0