20.500.12556/RUL-107329 Merjenje pretoka različnih plinov z laminarnim merilnikom pretoka Flow measurements of different gases with a laminar flow meter Pomemben vplivni dejavnik pri merjenju pretoka z laminarnim merilnikom pretoka je tudi vrsta plina. V primeru uporabe merilnika z različnimi plini je umerjanje merilnika za vse pline lahko ekonomsko neugodno. V nalogi smo zato raziskali, ali je možno z enostavno računsko korekcijo dobiti ustrezne rezultate izmerjenega pretoka plina, ki je drugačen od tistega, za katerega je merilnik umerjen oz. nastavljen. Eksperimentalno smo z laminarnim merilnikom pretoka, nastavljenim za merjenje zraka, pomerili pretoke dušika in kisika. Iz pridobljenih izmerkov smo s korekcijskim modelom, ki upošteva razmerje viskoznosti dejanskega in referenčnega plina in temelji na Poiseuillovem zakonu, pridobili dovolj natančne rezultate, ki so nam pokazali, da je predlagana korekcija učinkovita. When using a laminar flowmeter for measuring flow rate, the type of gas plays an important role. Calibration of the flow meter for each gas may be economically inconvenient when using a flowmeter for different gases. The aim of this work was to determine whether a simple computational correction could be used to obtain suitable flow rate results for a gas, which is different to the one the flowmeter was calibreted (set) for. Experimental results were obtained by measuring flow rates of nitrogen and oxygen using a laminar flowmeter calibrated for air. The correction that was applied to experimental measurements accounts for the ratio of viscosities of actual and reference gas and is based on Poiseuille Law, gave a sufficiently accurate results, demonstrating the appropriateness of the use of the proposed correction. laminarni merilnik pretoka prostorninski tok Poiseuillov zakon eksperimentalna analiza korekcija merilnih rezultatov volumetric flow rate laminar flow Poiseuille law flow meter measurement correction true false false [Ž. Malgaj] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-03-30 07:45:03 2019-03-30 07:45:16 2023-11-29 13:22:11 0000-00-00 00:00:00 2019 0 Ljubljana 0 XIV, 21 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532.57:544.27(043.2) 212176 16569883 3319.pdf 3319.pdf 1 96C26891632895F5B37BE52493BB40CA f7922d4840e8efdc2e9433ce76355cc8ffa1509dde4547ec7ccdc7e592e6e195 683a7e3b-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=118127 Fakulteta za strojništvo 0 0 0