2026-04-17T05:19:11Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/204352024-06-14T08:53:35Zcom_2072_452955com_2072_2054col_2072_453061

2024-06-14T08:53:35Z urn:hdl:10256/20435 The repowering of vertical axis water mills preserving their cultural heritage: techno-economic analysis with water wheels and Turgo turbines Quaranta, Emanuele Pujol i Sagaró, Toni Grano, Maria Carmela Molins hidràulics Water mills Purpose – The paper presents a techno-economic analysis of the electromechanical equipment of traditional vertical axis water mills (VAWMs) to help investors, mill owners and engineers to preliminary estimate related benefits and costs of a VAWM repowering. Design/methodology/approach – Two sustainable repowering solutions were examined with the additional aim to preserve the original status and aesthetics of a VAWM: the use of a vertical axis water wheel (VAWW) and a vertical axis impulse turbine. The analysis was applied to a database of 714 VAWMs in Basilicata (Italy), with known head and flow. Findings – Expeditious equations were proposed for both solutions to determine: (1) a suitable diameter as a function of the flow rate; (2) the costs of the electromechanical equipment; (3) achievable power. The common operating hydraulic range of a VAWM (head and flow) was also identified. Reality checks on the obtained results are shown, in particular by examining two Spanish case studies and the available literature. The power generated by the impulse turbine (Turgo type) is twice that of a VAWW, but it is one order of magnitude more expensive. Therefore, the impulse turbine should be used for higher power requirements (>3 kW), or when the electricity is delivered to the grid, maximizing the long-term profit. Originality/value – Since there is not enough evidence about the achievable performance and cost of a VAWM repowering, this work provides expeditious tools for their evaluation 2024-06-14T08:53:35Z 2024-06-14T08:53:35Z 2021-08-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer-reviewed http://hdl.handle.net/10256/20435 info:eu-repo/semantics/altIdentifier/doi/10.1108/JCHMSD-03-2021-0040 info:eu-repo/semantics/altIdentifier/issn/2044-1266 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Emerald Journal of Cultural Heritage Management and Sustainable Development, 2021, vol. ahead-of-print, núm. ahead-of-print Articles publicats (D-EMCI)