20.500.12556/RUL-142255 Vpliv pretoka vodne raztopine na mašenje ploščnega prenosnika toplote The effect of solution flow rate on plate heat exchanger fouling Ploščni prenosnik toplote je podvržen neželenemu odlaganju materiala na površino prenosnika toplote, kar močno zmanjša njegovo učinkovitost. V pričujočem delu smo skozi kompaktni ploščni prenosnik toplote v protismernem režimu črpali vodno raztopino inverzno-topnih soli in med variabilnim spreminjanjem pretoka opazovali časovno spreminjanje mašenja in učinkovitosti prenosnika toplote. Analizirali smo vpliv skočnih sprememb pretoka na odlaganje nečistoč. Z infrardečo kamero smo merili površinsko temperaturo zgornje plošče, kar je omogočilo lokalno detekcijo mašenja. Ugotovili smo, da spreminjanje hitrosti pretoka skozi ploščni prenosnik toplote lahko izboljša učinkovitost prenosnika in zmanjšuje odlaganje nečistoč. A plate heat exchanger is subject to unwanted deposition of material on the surface of the heat exchanger, which greatly reduces its efficiency. In the present work, an aqueous solution of inverse-soluble salts was pumped through a compact plate heat exchanger in the counter-flow regime and, during variable changes in the flow rate, we observed the time change of fouling and efficiency of the heat exchanger. We analyzed the influence of sudden changes in the flow rate on the deposition of impurities. We measured the surface temperature of the upper plate with an infrared camera, which enabled local detection of fouling. We found that changing the flow rate through a plate heat exchanger can improve the efficiency of the heat exchanger and reduce fouling. ploščni prenosnik toplote obloge učinkovitost odlaganje nečistoč infrardeča kamera plate heat exchanger deposit efficiency fouling infrared camera true false false [J. Juvan] Slovenski jezik Angleški jezik Zaključna naloga 2022-10-28 08:30:23 2022-10-28 08:30:26 2023-01-11 07:54:54 0000-00-00 00:00:00 2022 0 Ljubljana 0 XV, 30 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.565.942(043.2) 246724 137094403 21263.pdf 21263.pdf 1 8B0F139712AB292BB311236C6202AAB6 d31a9b03eed841c9731d5f6c32667ef3fc386ba873263ba0115c5ef7bd6d3d62 efff2782-5689-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=163564 Fakulteta za strojništvo 0 0 0