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Micro-grid design and life-cycle assessment of a mountain hut's stand-alone energy system with hydrogen used for seasonal storage
ID Mori, Mitja (Author), ID Gutiérrez, Manuel (Author), ID Casero, Pedro (Author)

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Abstract
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.

Language:English
Keywords:mountain huts, micro-grid, hydroelectricity, energy storage, environmental impacts, net present costs
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Version of Record
Year:2021
Number of pages:Str. 29706-29723
Numbering:Vol. 46, iss. 57
PID:20.500.12556/RUL-138450 This link opens in a new window
UDC:502.174.3:728.5
ISSN on article:0360-3199
DOI:10.1016/j.ijhydene.2020.11.155 This link opens in a new window
COBISS.SI-ID:41896707 This link opens in a new window
Publication date in RUL:21.07.2022
Views:701
Downloads:100
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Record is a part of a journal

Title:International journal of hydrogen energy
Shortened title:Int. j. hydrogen energy
Publisher:Elsevier, Hydrogen Energy Publications LLC
ISSN:0360-3199
COBISS.SI-ID:3338511 This link opens in a new window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Language:Slovenian
Keywords:planinske koče, mikro omrežje, hidroenergija, shranjevanje energije, okoljski vplivi, neto sedanja vrednost

Projects

Funder:EC - European Commission
Funding programme:LIFE
Project number:LIFE15 CCA/ES/000058
Name:Sustainable Mountain Huts in Europe
Acronym:SUSTAINHUTS

Funder:ARRS - Slovenian Research Agency
Project number:P2-0401
Name:Energetsko strojništvo

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