EN 13181:2001
(Main)Ventilation for buildings - Terminals - Performance testing of louvres subject to simulated sand
Ventilation for buildings - Terminals - Performance testing of louvres subject to simulated sand
This European Standard specifies a method for measuring the sand rejection efficiency of sand trap louvres subject to simulated sand and with inlet air flow through the louvre under test. The Standard considers a 1000 mm ´ 1000 mm section of sand trap louvre, or the nearest possible blade increment, for evaluation purposes.
The purpose of the tests incorporated in this European Standard is as follows:
a) Sand Rejection Effectiveness
To establish the sand rejection effectiveness when subjected to various air flow rates through the assembly.
b) Entry loss coefficient/Pressure requirements
To establish the air pressure loss through the sand trap louvre at various air flow rates and by calculation Discharge Loss Coefficient.
Lüftung von Gebäuden - Endgeräte - Leistungsprüfung von Schutzblenden unter Einwirkung von simuliertem Sand
Diese Norm legt ein Verfahren zur Messung des Sandrückhaltegrades von Sandfangblenden unter Einwirkung von simuliertem Sand und bei einströmendem Luftstrom durch die zu prüfende Haube fest. Für die Bewertung wird in der Norm ein Abschnitt von 1 000 mm ´ 1 000 mm einer Sandfangblende oder die nächstgrößere Lamellengröße betrachtet.
Der Zweck der Prüfungen dieser Europäischen Norm besteht in
a) Sandrückhaltegrad
Festlegung des Sandrückhaltegrades, wenn unterschiedliche Luftvolumenströme durch die Baueinheit strömen.
b) Anforderungen an den Eintrittsverlustkoeffizienten bzw. Druckverlust
Festlegung des Luftdruckverlustes durch die Sandfangblende bei unterschiedlichen Luftvolumenströmen und
durch Berechnung des Austrittsverlustkoeffizienten.
Ventilation des bâtiments - Bouches d'air - Performances des grilles soumises à une simulation de sable
La présente Norme européenne prescrit une méthode de mesure de l'efficacité du rejet de sable des grilles équipées de piège à sable soumises à une simulation de sable et avec passage de l'air d'entrée par la grille soumise à essai. Pour les besoins de l'évaluation, la norme examine une section de 1 000 mm x 1 000 mm d'une grille équipée de piège à sable ou l'incrément de lame le plus proche possible.
Les essais mentionnés dans la présente Norme européenne ont les objectifs suivants :
a) efficacité du rejet de sable
Etablir l'efficacité du rejet de sable lors du passage de divers débits d'air dans l'ensemble.
b) Exigence en matière de pression/coefficient d'entrée
Etablir la perte de pression d'air par la grille équipée de piège à sable pour divers débits d'air, en calculant le coefficient de décharge.
Prezračevanje stavb - Enote - Preskušanje lastnosti prezračevalnih odprtin, izpostavljenih vplivu simulacije peska
General Information
Relations
Overview
EN 13181:2001 - "Ventilation for buildings - Terminals - Performance testing of louvres subject to simulated sand" (CEN) specifies a laboratory method to measure the performance of sand trap louvres. The standard defines how to test a representative 1000 mm × 1000 mm louvre section (or nearest blade increment) to determine (a) sand rejection effectiveness under simulated blown-sand conditions, and (b) entry loss / pressure requirements including calculation of the discharge (entry loss) coefficient.
Key topics and technical requirements
- Test objectives: quantify the proportion of injected sand rejected by the louvre (effectiveness) and measure pressure loss across the louvre at varying air flow rates.
- Test specimen: evaluate a 1000 mm × 1000 mm core area (or nearest blade increment) of the sand trap louvre assembly.
- Test facility & apparatus:
- Aerodynamic test section with inlet cone or equivalent flow metering; capable of producing specified test flow range (facility designed to simulate blown sand and measure pressure losses).
- Sand injector assembly (fan, injector tube, feed funnel, distribution tube and spreader plate). Injector fan creates ~20–25 m·s‑1 in the distribution tube.
- Instrumentation standards: air-flow measurement and aerodynamic set-up in accordance with EN ISO 5167-1, ISO 5221 and ISO 5801; pitot/static and flow-metering techniques referenced.
- Measurement accuracies:
- Flow meters: specified ranges and uncertainties (e.g., ±2.5% and ±5% for different ranges).
- Pressure: liquid-filled or equivalent manometers with specified scale/accuracy tolerances.
- Weighing: sand mass measured to ±0.5% accuracy.
- Timers: accuracy of ±0.2 s for sand feed timing.
- Test sand: the standard prescribes a graded dry sand mixture representative of desert-type sand and allows alternative fine/coarse grades; pre-tests verify uniform injector distribution.
- Test procedures: defined sand feed rates, discharge durations and follow-up procedures (fans run for additional time after injection) and recording/analysis of retained vs. injected sand.
Applications and who uses it
- Manufacturers of sand trap louvres and air terminal devices use EN 13181:2001 to validate product performance in sand-prone environments.
- Independent test laboratories apply the method to certify effectiveness and pressure loss data.
- HVAC and building engineers / specifiers rely on the standard to select inlet devices for installations in desert or dusty climates to reduce filter loading and protect downstream equipment.
- Facility operators and asset owners in arid regions use test results to inform maintenance schedules and filtration strategies.
Related standards
- CR 12792 (symbols/terminology)
- EN ISO 5167-1 (flow measurement)
- ISO 3966, ISO 5221 (air flow measurement methods)
- ISO 5801 (fan performance testing)
EN 13181:2001 provides a reproducible, standardized approach to assess sand ingress protection and aerodynamic performance of louvres - critical information when designing ventilation systems for sand-exposed buildings.
Frequently Asked Questions
EN 13181:2001 is a standard published by the European Committee for Standardization (CEN). Its full title is "Ventilation for buildings - Terminals - Performance testing of louvres subject to simulated sand". This standard covers: This European Standard specifies a method for measuring the sand rejection efficiency of sand trap louvres subject to simulated sand and with inlet air flow through the louvre under test. The Standard considers a 1000 mm ´ 1000 mm section of sand trap louvre, or the nearest possible blade increment, for evaluation purposes. The purpose of the tests incorporated in this European Standard is as follows: a) Sand Rejection Effectiveness To establish the sand rejection effectiveness when subjected to various air flow rates through the assembly. b) Entry loss coefficient/Pressure requirements To establish the air pressure loss through the sand trap louvre at various air flow rates and by calculation Discharge Loss Coefficient.
This European Standard specifies a method for measuring the sand rejection efficiency of sand trap louvres subject to simulated sand and with inlet air flow through the louvre under test. The Standard considers a 1000 mm ´ 1000 mm section of sand trap louvre, or the nearest possible blade increment, for evaluation purposes. The purpose of the tests incorporated in this European Standard is as follows: a) Sand Rejection Effectiveness To establish the sand rejection effectiveness when subjected to various air flow rates through the assembly. b) Entry loss coefficient/Pressure requirements To establish the air pressure loss through the sand trap louvre at various air flow rates and by calculation Discharge Loss Coefficient.
EN 13181:2001 is classified under the following ICS (International Classification for Standards) categories: 23.120 - Ventilators. Fans. Air-conditioners. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 13181:2001 has the following relationships with other standards: It is excused to EN 13030:2001. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 13181:2001 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lüftung von Gebäuden - Endgeräte - Leistungsprüfung von Schutzblenden unter Einwirkung von simuliertem SandVentilation des bâtiments - Bouches d'air - Performances des grilles soumises a une simulation de sableVentilation for buildings - Terminals - Performance testing of louvres subject to simulated sand91.140.30VLVWHPLVentilation and air-conditioningICS:Ta slovenski standard je istoveten z:EN 13181:2001SIST EN 13181:2001en01-december-2001SIST EN 13181:2001SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13181August 2001ICS 23.120English versionVentilation for buildings - Terminals - Performance testing oflouvres subject to simulated sandVentilation des bâtiments - Bouches d'air - Performancesdes grilles soumises à une simulation de sableLüftung von Gebäuden - Endgeräte - Leistungsprüfung vonSchutzblenden unter Einwirkung von simuliertem SandThis European Standard was approved by CEN on 22 June 2001.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,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13181:2001 ESIST EN 13181:2001
Typical test results and calculation examples.22A.1Entry loss coefficient.22A.2Sand trap louvre effectiveness.23A.2.1Recording results.23A.2.2Rating.23SIST EN 13181:2001
1000 mm section of sand trap louvre, or the nearest possible blade increment, forevaluation purposes.The purpose of the tests incorporated in this European Standard is as follows:a) Sand Rejection EffectivenessTo establish the sand rejection effectiveness when subjected to various air flow rates through theassembly.b) Entry loss coefficient/Pressure requirementsTo establish the air pressure loss through the sand trap louvre at various air flow rates and bycalculation Discharge Loss Coefficient.2 Normative referencesThis European Standard incorporates, by dated or undated reference, provisions from other publications.These normative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this European Standard only when incorporated in it by amendment or revision. For undatedreferences the latest edition of the publication referred to applies (including amendments).CR 12792, Ventilation for buildings — Symbols and terminologySIST EN 13181:2001
This check cantake the form of one of the following:a) a dimensional check for all flow meters not requiring calibration;b) a check calibration over their full range using the original method employed for initialcalibration of meters calibrated in situ;c) a check against a flow meter which meets the flow meter specification described in ISO 5221.5.2 Pressure measurement5.2.1Pressure in the duct shall be measured by means of a liquid-filled calibrated manometer, orany other device conforming to 5.2.2.5.2.2The maximum scale interval shall not be greater than the characteristics given in Table 2 forthe appropriate range of manometers.Table 2 — Range and scale interval for manometersRangeMax. scale intervalPaPa 251,0> 25 to
2502,5> 250 to
5005,0> 50025,0SIST EN 13181:2001
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