20.500.12556/RUL-186396 Dinamična karakterizacija kemičnih in fizikalnih adsorbentov pri različnih delnih tlakih vodne pare v zraku Dynamic characterization of chemical and physical adsorbents at different partial pressures of water vapor in air Zaradi pomanjkanja sladke vode postaja raziskovanje alternativnih in trajnostnih načinov pridobivanja vode vse pomembnejše. Eden izmed potencialnih virov predstavlja voda v atmosferi, predvsem v obliki vodne pare, ki se zaradi globalnega vodnega kroga neprestano obnavlja. Tehnologije za pridobivanje vode iz atmosfere (Atmospheric Water Harvesting – AWH) omogočajo izkoriščanje tega vira s pomočjo različnih procesov, kot so zajemanje megle, kondenzacija vodne pare ter sistemi na osnovi adsorpcije oziroma absorpcije. V nalogi smo izdelali eksperimentalni sistem za dinamično merjenje adsorpcije vodne pare pri nadzorovani temperaturi in relativni vlažnosti. Z eksperimentalnimi meritvami smo ovrednotili adsorpcijske lastnosti šestih različnih kemičnih in fizikalnih adsorbentov ter primerjali njihovo adsorpcijsko kapaciteto in kinetiko pri različnih relativnih vlažnostih. Dobljeni rezultati so pokazali jasne razlike v adsorpcijski kapaciteti in dinamiki adsorpcije posameznih adsorbentov. Ugotovili smo, da se adsorpcijska kapaciteta vseh preiskovanih materialov povečuje z naraščanjem relativne vlažnosti zraka, vendar se materiali med seboj pomembno razlikujejo po hitrosti adsorpcije in doseženem specifičnem privzemu vode. Pri izbiri sorpcijskega materiala ni odločilna le največja adsorpcijska kapaciteta, temveč tudi adsorpcijska dinamika in odziv materiala na spremembe relativne vlažnosti, kar je pomembno pri načrtovanju učinkovitih AWH sistemov. Rezultati predstavljajo uporabno osnovo za nadaljnji razvoj in izbiro sorbentov za sisteme pridobivanja vode iz atmosfere ter poudarjajo pomen dinamičnih meritev pri vrednotenju njihove učinkovitosti. Due to the growing scarcity of freshwater, research into alternative and sustainable methods of water production is becoming increasingly important. One potential source is atmospheric water, particularly in the form of water vapour, which is continuously replenished through the global water cycle. Atmospheric Water Harvesting (AWH) technologies enable the utilization of this resource through various processes, including fog harvesting, water vapuor condensation, and adsorption- or absorption-based systems. In this thesis, an experimental system was developed for the dynamic measurement of water vapour adsorption under controlled temperature and relative humidity conditions. Experimental measurements were used to evaluate the adsorption properties of six different chemical and physical adsorbents and to compare their adsorption capacities and kinetics at different relative humidity levels. The results revealed clear differences in the adsorption capacity and adsorption dynamics of the investigated adsorbents. The adsorption capacity of all tested materials increased with increasing relative humidity; however, significant differences were observed in their adsorption rates and specific water uptake. The selection of a suitable sorption material therefore depends not only on its maximum adsorption capacity, but also on its adsorption dynamics and response to changes in relative humidity, which are important factors in the design of efficient AWH systems. The results provide a useful basis for the further development and selection of sorbents for atmospheric water harvesting systems and highlight the importance of dynamic measurements in evaluating their performance. pridobivanje vode iz atmosphere adsorpcija vode sorpcijski material adsorpcijska kapaciteta dinamična karakterizacija atmospheric water harvesting water vapour adsorption sorption material adsorption capacity dynamic characterisation true false false [L. E. Zirnstein] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-09-01 08:33:02 2026-09-01 08:33:12 2026-09-03 04:37:44 0000-00-00 00:00:00 2026 0 Ljubljana 0 XII, 56 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 628.116:544.723.21(043.2) 288719 289557507 48550.pdf 48550.pdf 1 6817CFCC2CF4A01880D1961FF7E0B1D1 76ad9d78b7ebf2f8bbfc3604c20d19f1c7ee20a5dd726ee30e22f1494a8deb2e 945e2ae5-a5ce-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245636 Fakulteta za strojništvo 0 0 0