Embodied energy associated with the materials used in irrigation systems: Drip and centre pivot

摘要: Evaluations able to estimate sustainability indices of production systems have intensified the use complex analysis. The energy flow methodology considers total direct and indirect required by systems. A way determine flows is through material determination, which used as a inventory processes. This study aimed define model embodied for two kinds irrigation systems, drip centre pivot, whose variables are parameters projects such irrigated area, distance between assets water source, useful life equipment. Using same scenario presented other authors compare values pivot irrigation, results ranged from 4.10 2.09 GJ ha−1, where highest value result using just 10 years life. For system, 5.52 6.20 GJ ha−1. participation each part system differs scenarios evaluated. pump was responsible 0.38 3.14%, filter had minute share (