Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/45016
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

The effects of pressure, nozzle diameter and meteorological conditions on the performance of agricultural impact sprinklers

AuthorsSánchez Marcos, Ignacio; Faci González, José María; Zapata Ruiz, Nery CSIC ORCID
KeywordsSprinkler irrigation
Evaluation
Wind
Uniformity
Water-losses
Issue DateDec-2011
PublisherElsevier
CitationSánchez I, Faci JM, Zapata N. The effects of pressure, nozzle diameter and meteorological conditions on the performance of agricultural impact sprinklers. Agricultural Water Management 102 (1): 13-24 (2011)
AbstractThis study evaluates agricultural impact sprinklers under different combinations of pressure (p), nozzle diameter (D) and meteorological conditions. The radial curve (Rad) of an isolated sprinkler, i.e., the water distribution along the wetted radius, was evaluated through 25 tests. Christiansen's uniformity coefficient (CUC) and the wind drift and evaporation losses (WDEL) were evaluated for a solid-set system using 52 tests. The Rad constitutes the footprint of a sprinkler. The CUC is intimately connected to the Rad. The Rad must be characterized under calm conditions. Very low winds, especially prevailing winds, significantly distort the water distribution. The vector average of the wind velocity (V’) is recommended as a better explanatory variable than the more popular arithmetic average (V). We recommend characterizing the Rad under indoor conditions or under conditions that meet V’ < 0.6 m s−1 in open-air conditions. The Rad was mostly affected by the sprinkler model. V’ was the main explanatory variable for the CUC; p was significant as well. V was the main variable explaining the WDEL; the air temperature (T) was significant, too. Sprinkler irrigation simulators simplify the selection of a solid-set system for farmers, designers and advisors. However, the quality of the simulations greatly depends on the characterization of the Rad. This work provides useful recommendations in this area.
Description19 Pags. The definitive version, with Figs. y Tabls., is available at: http://www.sciencedirect.com/science/journal/03783774
Publisher version (URL)http://dx.doi.org/10.1016/j.agwat.2011.10.002
URIhttp://hdl.handle.net/10261/45016
DOI10.1016/j.agwat.2011.10.002
ISSN0378-3774
Appears in Collections:(EEAD) Artículos

Files in This Item:
File Description SizeFormat
ZapataN_AgricWatManag_2011.pdf62,43 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.