20.500.12556/RUL-138450 Micro-grid design and life-cycle assessment of a mountain hut's stand-alone energy system with hydrogen used for seasonal storage Mountain huts, as special, stand-alone, micro-grid systems, are not connected to a power grid and represent a burden on the environment. The micro-grid has to be flexible to cover daily and seasonal fluctuations. Heat and electricity are usually generated with fossil fuels due to the simple on-off operation. By introducing renewable energy sources (RESs), the generation of energy could be more sustainable, but the generation and consumption must be balanced. The paper describes the integration of a hydrogen-storage system (HSS) and a battery-storage system (BattS) in a mountain hut. The HSS involves a proton-exchange-membrane water electrolyser (PEMWE), a hydrogen storage tank (H$_2$ tank), a PEM fuel cell (PEMFC) and a BattS consisting of lead-acid batteries. Eight micro-grid configurations were modelled using HOMER and evaluated from the technical, environmental and economic points of view. A life-cycle assessment analysis was made from the cradle to the gate. The micro-grid configurations with the HSS achieve, on average, a more than 70% decrease in the environmental impacts in comparison to the state of play at the beginning, but require a larger investment. Comparing the HSS with the BattS as a seasonal energy storage, the hydrogen-based technology had advantages for all of the assessed criteria. mountain huts micro-grid hydroelectricity energy storage environmental impacts net present costs planinske koče mikro omrežje hidroenergija shranjevanje energije okoljski vplivi neto sedanja vrednost true false true Angleški jezik Slovenski jezik Članek v reviji 2022-07-21 08:15:35 2022-07-21 08:15:40 2022-09-15 04:16:46 0000-00-00 00:00:00 2021 0 0 Str. 29706-29723 iss. 57 Vol. 46 Aug. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 502.174.3:728.5 0360-3199 10.1016/j.ijhydene.2020.11.155 41896707 1-s2.0-S0360319920344013-main.pdf 1-s2.0-S0360319920344013-main.pdf 1 F37C9FBACAFBE2452D4EA3BD0042F07D 29eed780aa1eb65d774ce4f105feb82622f9f9f95590f1c078699c8065682533 ea317f6b-08bc-11ed-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=158784 https://www.sciencedirect.com/science/article/pii/S0360319920344013 1 4bb8e411-08bc-11ed-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=158783 Fakulteta za strojništvo 0 0 0