SIST EN 13182:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lüftung von Gebäuden - Gerätetechnische Anforderungen für Messungen der Luftgeschwindigkeit in belüfteten RäumenVentilation des bâtiments - Prescription d'instrumentation pour les mesures de vitesses d'air dans des espaces ventilésVentilation for buildings - Instrumentation requirements for air velocity measurements in ventilated spaces91.140.30VLVWHPLVentilation and air-conditioningICS:Ta slovenski standard je istoveten z:EN 13182:2002SIST EN 13182:2004en01-februar-2004SIST EN 13182:2004SLOVENSKI
STANDARD



SIST EN 13182:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13182April 2002ICS 23.120English versionVentilation for buildings - Instrumentation requirements for airvelocity measurements in ventilated spacesVentilation des bâtiments - Prescription d'instrumentationpour les mesures de vitesses d'air dans des espacesventilésLüftung von Gebäuden - Gerätetechnische Anforderungenfür Messungen der Luftgeschwindigkeit in belüftetenRäumenThis European Standard was approved by CEN on 27 December 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, Malta, 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© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13182:2002 ESIST EN 13182:2004



EN 13182:2002 (E)2ContentspageForeword3Introduction41Scope42Normative references43Terms, definitions and symbols44Main characteristics of air flow patterns64.1General64.2Zone A64.3Zone B64.4Zone C65Relevant parameters86Requirements for velocity probe96.1Velocity and temperature range96.2Upper response frequency limit96.3Directional sensitivity96.4Influence of natural convection116.5Influence of ambient air temperature116.6Influence of air density126.7Dimensions127Signal processing requirements for air velocity measurements127.1General127.2Sampling rate and measuring period137.3Determination of mean value157.4Determination of standard deviation157.5Determination of turbulence intensity158Calibration158.1Instrument manufacturers158.1.1General158.1.2Accuracy158.2Recalibration by the user17Bibliography19SIST EN 13182:2004



EN 13182:2002 (E)3ForewordThis document EN 13182 has been prepared by Technical Committee CEN/TC 156 "Ventilation forbuildings", the secretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, at the latest by October 2002, and conflicting national standards shall be withdrawnat the latest by October 2002.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway,Portugal, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 13182:2004



EN 13182:2002 (E)4IntroductionEuropean Standards exist which deal with the evaluation of local air velocity in ventilated spaces. Thisparameter is important in the assessment of comfort1). It is determined in the assessment of air terminaldevice performance in the laboratory1) and in the site situation (in a building) where comparisons arerequired in relation to specified values1) .This standard provides a common basis for the instrumentation requirements for all the above applications.The characteristics of instruments can vary according to their measuring and signal processing principles,their construction, and the way in which they are used. It is important that the users compare the quality ofthe instruments available in the market at any given time and a check is made that they conform to therequirements of this European Standard.1
ScopeThis European Standard specifies the main characteristics of air velocity measuring devices. This includesrequirements for thermal velocity probes, recalibration and the signal processing of measurements in aventilated space, including those in the air jet and in the occupied zone. Other types of velocity measuringdevices should fulfil the performance parameters stated but appropriate calibration techniques should notnecessarily be used which are described in this standard.2
Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendment to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).CR 12792, Ventilation for buildings – Symbols and terminology.EN 27726, Thermal environments - Instruments and methods for measuring physical quantities(ISO 7726:1985).3
Terms, definitions and symbolsFor the purposes of this European Standard the terms, definitions and symbols in CR 12792 apply together withthose given in Table 1.
1) See Bibliography.SIST EN 13182:2004



EN 13182:2002 (E)5Table 1
SymbolsSymbolQuantityUnitfFrequencyHzfupUpper frequencyHzNTotal number of samplesnSpeed of rotationrads-1nrSampling rates-1pPressure dropPaRRadiusmsvStandard deviation of velocitym·s-1TuTurbulence intensity%Air temperature°CUOutput signalVUvOutput signal of velocityVUtOutput signal of temperatureVvAir velocitym·s-1vmean air velocitym·s-1viInstantaneous air velocitym·s-1voReference air velocitym·s-1vAir velocity reading at yaw anglem·s-1vAir velocity reading at roll anglem·s-1vtrueTrue air velocitym·s-1vDeviation of air velocitym·s-1Angle of yaw°Rotational angle (roll angle)°TimesSIST EN 13182:2004



EN 13182:2002 (E)64
Main characteristics of air flow patterns4.1
GeneralIn ventilated spaces, there are three main zones of interest (see Figure 1), depending on the air flowdistribution. Table 2 shows the range of flow characteristics, which can occur in the zones as specified in 4.2,4.3, and 4.4.Table 2
Main characteristics of air flow patternsZoneRange of meanair VelocityTurbulenceintensityFrequencyTemperaturerangeMain flowdirectionvTuf
m·s-1%Hz°CA(jet)0,3 to 10,010 to 50 310 to 50unidirectionalB(jet)0,1 to 0,55 to 50 115 to 25unidirectionalC(occupiedzone)0,1 to 0,520 to 80 118 to 35omnidirectional4.2
Zone AThe area within the supply air jet in a mixed air flow application.4.3
Zone BThe area within the supply air stream in an application using low velocity air terminal devices (for example;displacement ventilation).4.4
Zone CThe occupied zone area within ventilated spaces (see prEN 13779).SIST EN 13182:2004



EN 13182:2002 (E)7123446656Key1Mixed air flow – Ceiling air terminal device4Zone A2Mixed air flow – Floor air terminal device5Zone B3Displacement air flow6Zone CMain characteristics of air flow patternParameter of interestRequirements for velocity probeSignal processingrequirementsZoneVelocityrangeTurbulenceintensityFrequencyTemperaturerangeMain flowdirectionMeanvelocityTurbulenceintensityInstantaneousvelocity
rangeTemperaturerangeUpperresponsefrequencyDirectionsensitivityminimumrequirementsaMeasuringperiodSamplingRateTufvTuvfupnrms-1%Hz°Cms-1%m-1°CHzsl-1A(Jet)0,3 to 1010 to 503,010 to 50uni-directionalyesno0,25 to
1210 to 50N/Auni-directional 60 1B(Jet)0,1 to 0,55 to 501,015 to 25uni-directionalyesyes0,05 to 1,015 to 25
1,0uni-directional 180 5C(Occupiedzone)0,1 to 0,520 to 801,018 to 35omni-directionalyesyes0,05 to 1,018 to 351,0omni-directional 180 5a Using flow visualisation to establish flow direction in all zones, two- dimensional or response sensors can be used.b N/A - Not applicable because in Zone A only the mean velocity is of interest - not turbulence intensityFigure 1
Main characteristics of air flow and requirements of low velocity measuring instrumentsSIST EN 13182:2004



EN 13182:2002 (E)85 Relevant parametersThe main relevant parameters applicable to ventilated spaces are given in Table 3.Key1 True velocity2 Actual velocityFigure 2 – Example of velocity records at f = 2 Hz used to define the upper frequencyKeySact
is the actual standard deviation of the velocity measured by the tested probeStrue
is the standard deviation of the velocity measured by the reference instrumentFigure 3 – Example of dynamic response curve to define the upper frequency fupSIST EN 13182:2004



EN 13182:2002 (E)9Table 3
ParametersZoneMean velocityvTurbulence intensityTuAyesno(Jet)Byesyes(Jet)Cyesyes(Occupied zone)6 Requirements for velocity probe6.1 Velocity and temperature rangeThe values for the instrument velocity range and temperature are given in Table 4.6.2 Upper response frequency limitThe upper response frequency limit is defined as the highest frequency of sinusoidal velocity fluctuations upto which the anemometer shall be able to measure the standard deviation of the air velocity with an accuracyof
10 % (see 7.4 for turbulence intensity in the range of 40 % to 60 %, see also 7.5 and Figure 2).Alternatively, the standard deviation ratio,
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