Evaporation from Camargos hydropower plant reservoir: water footprint characterization
| Autor: | Eduardo de Oliveira Bueno, Geovane Junqueira Alves, Carlos Rogério de Mello |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Evaporação
lcsh:Hydraulic engineering 010504 meteorology & atmospheric sciences Hydroelectric Evaporation 0207 environmental engineering Drainage basin Context (language use) lcsh:River lake and water-supply engineering (General) 02 engineering and technology Aquatic Science Pegada hídrica Oceanography 01 natural sciences lcsh:Technology Hydroelectricity lcsh:TC1-978 pegada hídrica 020701 environmental engineering Hydropower lcsh:Environmental sciences 0105 earth and related environmental sciences Earth-Surface Processes Water Science and Technology Hydrology lcsh:GE1-350 geography lcsh:TC401-506 geography.geographical_feature_category hidrelétrica business.industry lcsh:T lcsh:Geography. Anthropology. Recreation Water resources Nameplate capacity evaporação lcsh:G Hidrelétrica business Water resource management Water footprint Water use |
| Zdroj: | RBRH v.21 n.3 2016 RBRH Associação Brasileira de Recursos Hídricos (ABRH) instacron:ABRH RBRH, Volume: 21, Issue: 3, Pages: 570-575, Published: SEP 2016 Revista Brasileira de Recursos Hídricos, Vol 21, Iss 3, Pp 570-575 |
| Popis: | In recent years, a relevant debate has been raised by a question related to if the hydropower plants indeed represent a non-consumptive use of water resources. In this context, this work was developed at the Camargos Hydropower Plant reservoir, Grande river basin, southern Minas Gerais state, aiming to estimate evaporation rates, which allow the characterization of the Water Footprint in this facility, between the years of 2010 and 2014. Evaporation rates were estimated based on Linacre, Penman and Penman-Monteith methods. Regarding the distribution of evaporation throughout the year, all methods showed the same seasonal pattern, consistent with the meteorological elements behavior that influence this physical process. Although an annual average evaporation considered normal for the studied region (1329 mm) and a small reservoir area (64 km2), this hydropower plant has presented low electric energy production as it is an old facility (more than 50 years) and has low installed capacity. Therefore, Camargos Hydropower Plant has presented, by all methods, a high Water Footprint (130 m3.GJ–1 on average) compared to estimates for other hydropower plants in Brazil and worldwide. RESUMO Nos últimos anos, um debate relevante tem ocorrido provocado pelo questionamento se as usinas hidrelétricas são de fato de uso não consuntivo dos recursos hídricos. Neste contexto, foi desenvolvido um estudo no reservatório da usina hidrelétrica de Camargos, rio Grande - Minas Gerais, com o objetivo de estimar as taxas de evaporação e caracterizar a pegada hídrica desta usina para o período de 2010 a 2014. A evaporação foi estimada pelos métodos de Linacre, Penman e Penman-Monteith. Em relação à distribuição da evaporação ao longo do ano, todos os métodos apresentaram o mesmo padrão sazonal, condizente com o comportamento das variáveis meteorológicas que influenciam o processo. Apesar de uma evaporação anual média (1329 mm.ano–1) e da pequena área do reservatório (64 km2), por se tratar de um aproveitamento antigo (mais de 50 anos) e com baixa potência instalada, a geração da usina hidrelétrica de Camargos é pequena, resultando, para todos os métodos avaliados, em uma pegada hídrica elevada (média de 130 m3.GJ–1), comparada as estimativas indicadas na literatura para outras usinas hidrelétricas no Brasil e no mundo. |
| Databáze: | OpenAIRE |
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