Data/hora: 11/06/2024 03:34:38

Provedor de dados: | 42
País: | Brazil
Título: | Impact of artificial destratification on water availability of reservoirs in the Brazilian semiarid
Autores: | LIMA NETO,IRAN E.
Data: | 2019-01-01
Ano: | 2019
Palavras-chave: | Aeration; Evaporation; Bubble plumes; Lakes; Stratification; Water yield.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500904
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201920171022
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.91 n.3 2019
Fonte: | info:eu-repo/semantics/openAccess