| Registro completo |
| Provedor de dados: |
Anais da ABC (AABC)
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| País: |
Brazil
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| Título: |
Impact of artificial destratification on water availability of reservoirs in the Brazilian semiarid
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| Autores: |
LIMA NETO,IRAN E.
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| Data: |
2019-01-01
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| Ano: |
2019
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| Palavras-chave: |
Aeration
Evaporation
Bubble plumes
Lakes
Stratification
Water yield
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| Resumo: |
Abstract: Field surveys and integral modelling were carried out to study the effect of bubble plumes on the flow hydrodynamics and the time-evolution of water temperature profiles in a shallow lake with maximum depth of about 4 m. Then, model simulations were performed to verify the feasibility of destratification of ten water-supply reservoirs with capacities of 10-2,000 hm3. Finally, hydrological modelling was conducted to assess the impact of destratification on evaporation suppression and its effects on reservoir yield. The results indicate that net temperature reductions of the order of 1.0°C can be obtained, which corresponds to evaporation suppressions of approximately 10%. In turn, this resulted in increases in the regulated flow of 2-12% that could be described by a general correlation. Lastly, a simplified feasibility analysis provided an operational cost of about 1.0 US$ per cubic meter of saved water, which suggests that artificial destratification cannot be discarded as an alternative for supplementing water supply in rural water-scarce regions.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500904
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| Editor: |
Academia Brasileira de Ciências
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| Relação: |
10.1590/0001-3765201920171022
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| Formato: |
text/html
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| Fonte: |
Anais da Academia Brasileira de Ciências v.91 n.3 2019
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| Direitos: |
info:eu-repo/semantics/openAccess
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