Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

Full text
Author(s):
Diotto, A. V. [1] ; Folegatti, M. V. [2] ; Duarte, S. N. [2] ; Romanelli, T. L. [2]
Total Authors: 4
Affiliation:
[1] Univ Nebraska, Lincoln, NE - USA
[2] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Dept Biosyst Engn, BR-13418900 Piracicaba, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: BIOSYSTEMS ENGINEERING; v. 121, p. 38-45, MAY 2014.
Web of Science Citations: 7
Abstract

Evaluations able to estimate sustainability indices of production systems have intensified the use of complex analysis. The energy flow methodology considers the total direct and indirect energy required by production systems. A way to determine energy flows is through material flow determination, which is used as a material inventory of processes. This study aimed to define a model to determine the indirect embodied energy for two kinds of irrigation systems, drip and centre pivot, whose variables are parameters of irrigation projects such as irrigated area, distance between irrigation assets and water source, and useful life of the equipment. Using the same scenario presented by other authors to compare the values of indirect embodied energy for centre pivot irrigation, the model results ranged from 4.10 to 2.09 GJ ha(-1), where the highest value is a result of using just 10 years for the centre pivot useful life. For drip irrigation system, the indirect embodied energy ranged from 5.52 to 6.20 GJ ha(-1). The participation of each part of the system differs between the scenarios evaluated. The pump system was responsible for between 0.38 and 3.14%, the filter systems had a minute share for the drip system (<0.01%), the pipeline ranged from 0 to 23% and the internal part of the irrigation systems was the most important and ranged from 75.34 to 99.62%. The model developed can be used to identify the indirect embodied energy in analysis of irrigated production systems in different project conditions. (C) 2014 IAgrE. Published by Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 10/11960-7 - Energy analysis of Jatropha curcas crop irrigated by drip and center pivot sistems
Grantee:Adriano Valentim Diotto
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)