EN 14049:2003
(Main)Water application intensity - Calculation principles and measurement methods
Water application intensity - Calculation principles and measurement methods
This standard provides:
- principles and formulas for calculating water application intensity under sprinkler irrigation systems (fixed and moving);
- test methods and guidelines for measuring water application intensity under the different systems in laboratory and in field conditions.
It applies to stationary sprinkling systems: solid set sprinkler systems, automatic turf irrigation systems, sprinklers and sprayer for microirrigation systems, and to moving sprinkling systems: reel machine systems, centre pivot and moving laterals systems.
Bewässerungsverfahren - Bewässerungsintensität - Berechnungsgrundlagen und Messverfahren
In dieser Norm ist Folgendes festgelegt:
- Grundlagen und Formeln zur Berechnung der von (ortsfesten und beweglichen) Regner-Bewässerungs-systemen erreichten Bewässerungsintensität;
- Prüfverfahren und Richtlinien für die Messung der von verschiedenen Systemen unter Labor- und Feldbedingungen erreichten Bewässerungsintensität.
Sie gilt für ortsfeste Regnersysteme, d. h. fest installierte Regnersysteme, automatische Rasenbewässerungs-systeme, Regner und Sprüher für örtlich begrenzte Bewässerungssysteme, und für bewegliche Regnersysteme, d. h. Beregnungsmaschinen mit Regnereinzug, Kreis- und Linearberegnungs-maschinen.
Techniques d'irrigation - Intensité d'apport d'eau - Principes de calcul et méthodes de mesure
La présente norme fournit :
- les principes et les formules pour calculer l'intensité d'apport d'eau sous les systèmes d'irrigation par aspersion (systèmes fixes et mobiles) - les méthodes d'essai et lignes directrices pour mesurer l'intensité d'apport d'eau sous différents systèmes, dans les conditions de laboratoire et sur le terrain.
Elle s'applique aux systèmes d'aspersion fixes : systèmes d'aspersion en couverture intégrale, installations avec arrosage automatique des espaces verts, asperseurs et arroseurs pour systèmes d'irrigation localisée, ainsi qu'aux systèmes d'aspersion mobiles : installations avec enrouleur, systèmes avec pivot et rampes frontales.
Količina porabe vode – Računske osnove in merilne metode
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bewässerungsverfahren - Bewässerungsintensität - Berechnungsgrundlagen und MessverfahrenTechniques d'irrigation - Intensité d'apport d'eau - Principes de calcul et méthodes de mesureWater application intensity - Calculation principles and measurement methods65.060.35Namakalna in drenažna opremaIrrigation and drainage equipmentICS:Ta slovenski standard je istoveten z:EN 14049:2003SIST EN 14049:2004en01-junij-2004SIST EN 14049:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14049November 2003ICS 65.060.35English versionWater application intensity - Calculation principles andmeasurement methodsTechniques d'irrigation - Intensité d'apport d'eau - Principesde calcul et méthodes de mesureBewässerungsverfahren - Bewässerungsintensität -Berechnungsgrundlagen und MessverfahrenThis European Standard was approved by CEN on 18 September 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14049:2003 ESIST EN 14049:2004
(i.e. radius of throw) of the sprinkler.Key1Movement2CollectorFigure 1 — Width wetted (2xWr) by a moving full circle sprinkler (i.e. wetted diameter)Equation (4) for calculating average water application intensity remains relevant.The time duration t will depend on the actual value of machine's speed. It can be very different from its theoreticalvalue. Consequently it has to be verified when measurement or calculation are performed. This verification can beeither direct (see clause 5) or indirect by calculation of the average speed from a complete plot coverage by themachine. Then the calculation of irrigation duration can be performed following equation 7.VWrt2=(7)wherettime duration of the irrigation at a collector under the machine(h);Wrwetted radius of the sprinkler (m);Vactual average speed of the moving sprinkler (m/h).4.2.5.2 Average WAI for translatory moving systemsUsing equation (2) T can be derived from measurement or calculation from the actual moving speed V of themachine (T = LT/V), and S from the length LT and width L of the plot (S = L x LT). The actual average depth of waterapplication (D in mm) will be :TLLTQD´´=1000(8)whereQflow rate of the irrigation system (m3/h);Tduration of irrigation for the complete plot (h);Leffective (see EN ISO 11545) width of the plot irrigated by the machine (i.e. length of the lateral);LTtotal length of the pl
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