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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
23/11/1993 |
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Data da última atualização: |
13/03/2023 |
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Autoria: |
SHARMA, P. N. |
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Título: |
Optimization of small reservoir irrigation system for semi-arid tropics. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
Davis: University of California, 1981. |
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Páginas: |
198p. |
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Idioma: |
Inglês |
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Notas: |
Tese Doutorado |
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Conteúdo: |
For centuries small reservoirs, called tanks, have been a traditional method of storing water in the semi-arid tropics. Their use is presently being expanded but as yet no design or location guidelines have been developed. This study constructs an optimization procedure for both tank design and location in order to maximize net benefits. Two representative traditional tank systems near Hyderabad, India were monitored to collect input data for the model and gain insight into the significant design parameters. The results of studying the traditional tank systems showed that theis overall system water utilization efficiency was four to six times lower than the potential water utilization efficiency. This inefficiency was caused by over irrigating, growing water intensive crops (e.g. rice), high evaporation and seepage losses from the tank and non optimal tank placement. The optimization procedure for designing tanks utilized a modified monlinearr constrainted Fletcher-Powell algorithhm. The procedure finds the optimum storage capacity, optimum dimensions and optimum location for an elevated inlet type tank shaped as an inverted truncated cone though the model can be modified to suit any definable shape of a tank. The model also considers seepage and evaporation losses alongh with detailed construction costs which account for lead and lift in the excavation work. The optimum location of the tank in the catchment is found by placing the tank in a position to maximize runoff considering irrigable area (command area). Whether or not one tank or several smaller tanks should be constructed is determined by comparing the unconstrained optimum size with the constrained optimum size for the catchment and choosing the minimium of the two. The study concludes with a sensitivity analysis to determine the relationship between net benefits vs. seepage rates and net benefits vs. discount rates. Most of the input data concerning soils and crop responses were from studues conducted at the International Crops Research Institute for Semi-Arid tropics (ICRISAT), Hyderabad, India. MenosFor centuries small reservoirs, called tanks, have been a traditional method of storing water in the semi-arid tropics. Their use is presently being expanded but as yet no design or location guidelines have been developed. This study constructs an optimization procedure for both tank design and location in order to maximize net benefits. Two representative traditional tank systems near Hyderabad, India were monitored to collect input data for the model and gain insight into the significant design parameters. The results of studying the traditional tank systems showed that theis overall system water utilization efficiency was four to six times lower than the potential water utilization efficiency. This inefficiency was caused by over irrigating, growing water intensive crops (e.g. rice), high evaporation and seepage losses from the tank and non optimal tank placement. The optimization procedure for designing tanks utilized a modified monlinearr constrainted Fletcher-Powell algorithhm. The procedure finds the optimum storage capacity, optimum dimensions and optimum location for an elevated inlet type tank shaped as an inverted truncated cone though the model can be modified to suit any definable shape of a tank. The model also considers seepage and evaporation losses alongh with detailed construction costs which account for lead and lift in the excavation work. The optimum location of the tank in the catchment is found by placing the tank in a position to maximize runoff cons... Mostrar Tudo |
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Palavras-Chave: |
Armazenagem; Management; Regiao Tropical; Reservatorio; Sistema; Small reservoir; Tropical region. |
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Thesagro: |
Água; Irrigação; Manejo; Tanque. |
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Thesaurus Nal: |
India; irrigation systems; storage; tanks; water. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02885nam a2200325 a 4500
001 1149534
005 2023-03-13
008 1981 bl uuuu m 00u1 u #d
100 1 $aSHARMA, P. N.
245 $aOptimization of small reservoir irrigation system for semi-arid tropics.
260 $aDavis: University of California$c1981
300 $a198p.
500 $aTese Doutorado
520 $aFor centuries small reservoirs, called tanks, have been a traditional method of storing water in the semi-arid tropics. Their use is presently being expanded but as yet no design or location guidelines have been developed. This study constructs an optimization procedure for both tank design and location in order to maximize net benefits. Two representative traditional tank systems near Hyderabad, India were monitored to collect input data for the model and gain insight into the significant design parameters. The results of studying the traditional tank systems showed that theis overall system water utilization efficiency was four to six times lower than the potential water utilization efficiency. This inefficiency was caused by over irrigating, growing water intensive crops (e.g. rice), high evaporation and seepage losses from the tank and non optimal tank placement. The optimization procedure for designing tanks utilized a modified monlinearr constrainted Fletcher-Powell algorithhm. The procedure finds the optimum storage capacity, optimum dimensions and optimum location for an elevated inlet type tank shaped as an inverted truncated cone though the model can be modified to suit any definable shape of a tank. The model also considers seepage and evaporation losses alongh with detailed construction costs which account for lead and lift in the excavation work. The optimum location of the tank in the catchment is found by placing the tank in a position to maximize runoff considering irrigable area (command area). Whether or not one tank or several smaller tanks should be constructed is determined by comparing the unconstrained optimum size with the constrained optimum size for the catchment and choosing the minimium of the two. The study concludes with a sensitivity analysis to determine the relationship between net benefits vs. seepage rates and net benefits vs. discount rates. Most of the input data concerning soils and crop responses were from studues conducted at the International Crops Research Institute for Semi-Arid tropics (ICRISAT), Hyderabad, India.
650 $aIndia
650 $airrigation systems
650 $astorage
650 $atanks
650 $awater
650 $aÁgua
650 $aIrrigação
650 $aManejo
650 $aTanque
653 $aArmazenagem
653 $aManagement
653 $aRegiao Tropical
653 $aReservatorio
653 $aSistema
653 $aSmall reservoir
653 $aTropical region
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Registro original: |
Embrapa Semiárido (CPATSA) |
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| Registros recuperados : 17 | |
| 16. |  | PEDRINHA, V. F.; SANTOS, L. M.; GONÇALVES, C. P.; GARCIA, M. T.; LAMEIRA, O. A.; QUEIROGA, C. L.; MARCUCCI, M. C.; SHAHBAZI, M.-A.; SHARMA, P. K.; JUNQUEIRA, J. C.; SIPERT, C. R.; ANDRADE, F. B. de. Effects of natural antimicrobial compounds propolis and copaiba on periodontal ligament fibroblasts, molecular docking, and in vivo study in Galleria mellonella. Biomedicine & Pharmacotherapy, v. 171, 116139, 2024.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 17. | | SERRA, L. A.; CRUZ, R. G. da S.; GUTIERREZ, D. M. R.; CRUZ, A. J. G.; CANIZARES, C. A. T.; CHEN, X.; MOSIER, N.; THOMPSON, D.; ASTON, J.; DOOLEY, J.; SHARMA, P.; DE MARCO, J. L.; ALMEIDA, J. R. M. de; ERK, K.; XIMENES, E.; LADISCH, M. R. Screening method for Enzyme-based liquefaction of corn stover pellets at high solids. Bioresource Technology, v. 363, 127999, Nov., 2022.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Agroenergia. |
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| Registros recuperados : 17 | |
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