Energy economy in a center pivot irrigation system according to the improvement in the uniformity of water distribution / Economia de energia em irrigação por pivô central em função da melhoria na uniformidade da distribuição de água

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

In irrigation systems by center pivot, the efficiency of applying in field is directly related to distribution uniformity, influencing in energy saving inside an appropriate irrigation management program. Were used data from applied layer, average layer, flow, and central pivot length, from Guairá SP, determined by IDE (1989) by a performance assessment. By simulation of collected layers values of 70%, 73%, 75%, 78%, 80%, 83%, 85%, 88%, 90%, 93% 95% and 98% were obtained from the Christiansen (CUC) Uniformity Coefficiency, keeping constant the average layer value and consequently the same flow. The obtained net income from those water distributions were compared using five beans prices in Brazilian currency R$1,75, R$2,00, R$2,25, R$2,50, R$2,75, R$3,00 and R$3,25 kg-1 and the same way, for five water consume costs: R$ 0,01, R$ 0,02, R$ 0,03, R$ 0,04, and R$ 0,05m-3. The outcomes were analyzed considering the supplementary and total irrigation of 50% an 75% in humid and dry seasons. From obtained data by simulations were verified that the higher uniformity coefficiencies give higher liquid recipe and greater energy saving related to higher products prices. Supplementary irrigation gives the possibility of higher profit and greater energy saving, especially when made in the humid season

ASSUNTO(S)

distribuição de água simulation. energy economy economia de energia water distribution irrigação por pivô central central pivot irrigation simulação. net income

ACESSO AO ARTIGO

Documentos Relacionados