Publicação
Sensitivity analysis of levelized cost of hydro-pneumatic electricity storage for grid support applications
| datacite.subject.fos | Engenharia e Tecnologia::Engenharia do Ambiente | pt_PT |
| dc.contributor.advisor | Alves, Jorge Maia | |
| dc.contributor.author | Silva, João Paulo Mendes da | |
| dc.date.accessioned | 2025-02-18T15:22:59Z | |
| dc.date.available | 2025-02-18T15:22:59Z | |
| dc.date.issued | 2024-04-03 | |
| dc.date.submitted | 2023-09-01 | |
| dc.description.abstract | The thermodynamics associated with compressed air energy storage is discussed. A systematic methodology for technology analysis, according to compression and reservoir characteristics, is proposed. The technologies and prototypes presented in the literature are organized accordingly, and the potential energy/power densities, and heat losses calculated. The first sensitivity analysis of hydro-pneumatic levelized cost of electricity storage for a set of twelve power system applications, ranging from primary response to seasonal storage is done, using as parameters the specific power and energy investment costs and round-trip efficiency. The electric-to-electric round-trip efficiency for hydro-pneumatic energy storage systems is discussed, using a lab-scale hydro-pneumatic energy storage system that was built using commercially available bladder hydraulic accumulators. In general, the results show that hydro-pneumatic energy storage can be very competitive whenever the number of annual cycles is sufficiently high, as happens in the case of primary response application but, even for applications with a low number of annual cycles, it can be competitive for applications with a high ratio power/capacity. A comparison with the dominant technologies, pumped hydro and Li-Ion, shows that, for the highest hydro-pneumatic energy storage investment costs considered, this technology will only be competitive for primary response, but, for the lowest investment costs considered, hydro-pneumatic energy storage is more cost-effective than Li-Ion for all applications, and can even be more cost-effective than pumped hydro in four of the twelve applications. The main challenges to the development of hydro-pneumatic energy storage systems are discussed, and solutions to these challenges are proposed in the form of two submitted patents. | pt_PT |
| dc.identifier.tid | 101548958 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.5/98525 | |
| dc.language.iso | eng | pt_PT |
| dc.subject | Energy storage | pt_PT |
| dc.subject | Hydro-pneumatic energy storage | pt_PT |
| dc.subject | LCOS | pt_PT |
| dc.subject | Armazenamento de energia | pt_PT |
| dc.subject | Armazenamento de energia hidropneumático | pt_PT |
| dc.title | Sensitivity analysis of levelized cost of hydro-pneumatic electricity storage for grid support applications | pt_PT |
| dc.type | doctoral thesis | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | doctoralThesis | pt_PT |
| thesis.degree.name | Tese de doutoramento, Sistemas Sustentáveis de Energia, Universidade de Lisboa, Faculdade de Ciências, 2024 | pt_PT |