1、ICS 91.140.30Lftung von Gebuden Luftdurchlasseinheiten Aerodynamische Prfung und Bewertung vonLuftdurchlasseinheiten mit konstantem und variablem LuftvolumenstromRef. No. DIN EN 12589 : 2002-01English price group 13 Sales No. 111305.02DEUTSCHE NORM January2002EN 12589EN comprises 31 pages. No part o
2、f this standard may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).Ventilation for buildingsAerodynamic testing and rating of constant andvariable
3、 rate air terminal unitsEnglish version of DIN EN 12589European Standard EN 12589:2001 has the status of a DIN Standard.A comma is used as the decimal marker.National forewordThis standard has been prepared by CEN/TC 156 Ventilation for buildings (Secretariat: United Kingdom).The responsible German
4、body involved in its preparation was the Normenausschuss Heiz- und Raumluft-technik (HVAC Standards Committee).DIN EN ISO 5167-1 is the standard corresponding to International Standard ISO 5167-1 referred to inclause 2 of the EN.National Annex NAStandard referred to(and not included in Normative ref
5、erences)DIN EN ISO 5167-1 Measurement of fluid flow by means of pressure differential devices Part 1: Orificeplates, nozzles and Venturi tubes inserted in circular cross section conduits runningfull (ISO 5167-1 : 1991)English versionICS 91.140.30Management Centre: rue de Stassart 36, B-1050 Brussels
6、European Committee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungVentilation for buildingsAerodynamic testing and rating of constant andvariable rate air terminal units 2001. CEN All rights of exploitation in any form and by any meansreserved worldwide for CEN nation
7、al members.Ref. No. EN 12589 : 2001 EVentilation des btiments Unitsterminales Essais arodynamiqueset valuation des units terminales dbit constant et variableLftung von Gebuden Luftdurch-lasseinheiten AerodynamischePrfung und Bewertung vonLuftdurchlasseinheiten mit konstan-tem und variablem Luftvolum
8、enstromThis European Standard was approved by CEN on 2001-08-18.CEN members are bound to comply with the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard the status of anational standard without any alteration.Up-to-date lists and bibliographical refer
9、ences concerning such nationalstandards may be obtained on application to the Management Centre or to anyCEN member.The European Standards exist in three official versions (English, French, German).A version in any other language made by translation under the responsibility of aCEN member into its o
10、wn language and notified to the Management Centre hasthe same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, the CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, the Netherlands, Norway, Portugal, Spain,
11、 Sweden, Switzerland,and the United Kingdom.|September 2001EN 12589Page 2EN 12589 : 2001ContentsPageForeword 21 Scope 32 Normative references 33 Terms, definitions and symbols 64 Instrumentation 65 Tests for flow rate control characteristics 76 Tests to determine induced air flow rate 197 Test to de
12、termine temperature mixing 218 Tests to determine leakage rates 26Annex A(normative) Determination of static pressure 31ForewordThis European Standard has been prepared byTechnical Committee CEN/TC 156 “Ventilation forbuildings“, the secretariat of which is held byBSI.This European Standard shall be
13、 given the status of a national standard, either bypublication of anidentical text or byendorsement, at the latest byMarch 2002, and conflicting national standards shallbe withdrawn at the latest byMarch 2002.According to the CEN/CENELEC Internal Regulations, the national standards organizations of
14、thefollowing countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Page 3EN 12589 : 20011 ScopeThis Euro
15、pean Standard specifies methods for the aerodynamic testing and rating of constant andvariable flow rate terminal units suitable for use with air distribution systems.The terminal units considered are:- single and dual duct;- induction;- fan assisted induction (parallel and series);- single duct wit
16、h integral diffuser.Thetestsforeachtypeofunitaresummarizedinfigure1.The tests in this standard are designed to determine fullythe aerodynamic performance of terminal unitsand provide a basis for the comparison of the suitabilityof such assemblies when correctlyinstalled in anair distribution system.
17、2 NormativereferencesThis European Standard incorporated bydated 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 the subsequent amendments to or revision
18、s of anyof these publicationsapplyto this European Standard onlywhen incorporated in it byamendment or revision. For undatedreferences the latest edition of the publication referred to applies (including amendments).CR 12792 Ventilation for buildings - Symbols, units and terminologyISO 5167-1 Measur
19、ement of fluid flow bymeans of pressure differential devices - Part 1 :Orificeplates, nozzles and venturic tubes inserted in circular cross-section conduits running fullISO 3966 Measurement of fluid flow in closed conduits Velocityarea method using Pitot statictubesISO 5221 Air distribution and air
20、diffusion - Rules to methods of measuring air flow rate in an airhandling ductPage 4EN 12589 : 2001Figure1-TestunitsandtestrequirementsPage 5EN 12589 : 20013 Terms,definitionsandsymbols3.1For the purposes of this standard, the terms and definitions given in CR 12792 apply.3.2The symbols and the suff
21、ixes used in this standard are shown in tables 1 and 2respectively.Table1-SymbolsusedfortestingairterminalunitsSymbol Quantity UnitsAcInternal cross-sectional area of duct m2deEquivalent diameter /4Acmp Absolute static pressure PapaAtmospheric pressure PapdVelocitypressure PaprStagnation (or absolut
22、e total pressure) PapsStatic gauge pressure (p-pa)PaptTotal pressure (pr-pap Flow meter pressure difference PaptTotal pressure difference PaqvVolume rateof airflow at the flowmeter m3.s-1orl.s-1qvLLeakage volume rate of airflow m3.s-1orl.s-1QvLBALeakage volume rate of air flow across avalve per unit
23、 cross-sectional aream3.s-1.m-2or l.s-1.m-2QvLCALeakage volume rate of air flow throughcasing per unit cross-sectional aream3.s-1.m-2or l.s-1.m-2v Velocitym.s-1 Air densitykg.m-3 Celsius temperature CS Position of valve or induction damper setting %orn Fan speed control setting V or positionTable2-S
24、uffixesusedwiththesymbolsintable10 Recommended value (usuallybythe manufacturer)1 Inlet of the unit under test2 Outlet of the unit under test3 Induction port(s) of the unit under testi Outlet air temperaturec Cold side of the unit under testw Warm side of the unit under testu Measuring point upstrea
25、m of the flow meterD Measuring point upstream of the discharge flowmetersn Nett surface area of the unit under testca Casing of the unit under testva Valve of the unit under testPage 6EN 12589 : 20014 Instrumentation4.1Airflowratemeasurement4.1.1 The air flow rate shall be measured using instruments
26、 in accordance with ISO 5167-1.4.1.2 Air flow meters shall have the ranges and accuracies shown in table 3.Table3 RangesandaccuraciesofairflowmetersRangem3s-1Measurementerror% 0,007 0,070,07 7,0052,5NOTE Flow meters maybe calibrated in situ bymeans of pitot static tube traverse techniques described
27、inISO 3966.4.1.3 Leakage air flow meters shall have the ranges and accuracies shown in table 4.Table4 RangesandaccuraciesofleakageairflowmetersRangem3s-1Measurementerror% 0,018 0,0180,9 x 10-3m3.s-15%NOTE Alternatively, other devices such as variable-area, flow-rate meters or integrating air flow me
28、ters of thepositive displacement type may be used if calibrated in accordance with 4.1.3.4.1.4 Flow meters shall be checked at intervals, as appropriate, but not exceeding 12 months. Thischeck maytake the form of one of the following:a) a dimensional check for allflow meters not requiring calibratio
29、n;b) a check calibration over their full range using the original method employed for initial calibrationor meters calibratedinsitu;c) a check against a flow meter which meets the flow meter specification in accordance withISO 5221.Page7EN 12589 : 20014.2Pressuremeasurement4.2.1 Pressure in the duct
30、 shall be measured bymeans of a liquid-filled calibrated manometer, oranyother device conforming to 4.2.2.4.2.2 The maximum scale or displayinterval shall not be greater than the characteristics listed forthe accompanying range of manometers, shown in table 5.Table5 MaximumscaleordisplayintervalRang
31、ePaMaximumscaleintervalPa 25 25to 250 250to 500 5001,02,55,025,04.2.3 For air flow rate measurements, the minimum pressure differential shall be:a) 25 Pa with an inclined tube manometer or micro-manometer;b) 500 Pa with a vertical tube manometer.4.2.4 The calibration standards shall be:a) for instru
32、ments with the range up to 25 Pa, a micro-manometer accurate to 0,5 Pa;b) for instruments with the range of 25 Pa to 500 Pa, a manometer accurate to 2,6 Pa (hookgauge or micro-manometer);c) for instruments with the range of 500 Pa and upwards, a manometer accurate to 25 Pa(verticalmanometer).4.3Temp
33、eraturemeasurementMeasurement of temperature shall be bymeans of mercury-in-glass thermometers, resistancethermometers or thermo-couples. Instruments shall be graduated to give readings in intervals not greaterthan 0,5 K and calibrated to an accuracyof 0,25 K.5 Testsforflowratecontrolcharacteristics
34、5.1PrincipleTo determine the changes in primaryair flow rate resulting either from variations in the pressuredifferential between the inlet duct(s) and the outlet duct(s) or chamber or upstream pressure whichever isappropriate.Also, to determine the pressure differential between upstream and downstr
35、eam of the terminal unit, andadditionallythe minimum pressure difference which is necessaryto reach the performance of the terminalunit within the specified operating tolerances (minimum operating pressure difference).Page 8EN 12589 : 20015.2TestmeasurementsThe following parameters shall be measured
36、 during the tests:a) ps1inlet duct static gauge pressure.b) ps2static gauge pressure in the chamber into which the outlet duct discharges(ps2= 0 if free outlet conditions are used).c) 1air temperature at the inlet to the unit under test.d) p the flowmeter pressure difference (or the appropriate para
37、meter that relatesto the air flowqv1).e) psuthe static gauge pressure immediatelyupstream of the flow meter.f) uthe air temperature immediatelyupstream of the flow meter.g) pathe atmospheric pressure at the beginning and end of the tests.5.3Pressurecompensationandminimumoperatingpressuredifference(p
38、tmin)5.3.1 UnitswithoutinductionSD,DDNOTE This test is required for pressure independent units only.5.3.1.1 Test installationA typical test installation for type SD units is shown in figure 2.Performance of static pressure measurement device is described in annex A.A typical test installation for ty
39、pe DD units is shown in figure 3. All the test equipment described inclause 4 should be installed for both supplyducts. Discharge temperature measurement equipmentshould be installed if mixing efficiencyis to be determined.5.3.1.2 Test procedure5.3.1.2.1 With the supplyfan running, set the flow rate
40、 controller to its maximum setting . Increase thepressure differential between the inlet(s) and the outlet(s) to the manufacturers recommended maximumoperating pressure differential and record the test measurements in accordance with 5.2.5.3.1.2.2 Decrease the pressure differential in stages, approx
41、imatelyto the values given in table 6until the flow rate has reached a value equal to or less than 50 % of the value obtained in thepressure differential range where the flow rate is seen to be approximatelyconstant. At each stagerecord the test measurements in accordance with 5.2.When making the ad
42、justments to pressure, if the pressure falls below the next prescribed value,increase it to the value at the start of the test, and then slowlydecrease it to the specified value beforea further measurement is taken.Key1Airflow5Totallengthofunit2FlowratemeasuringdevicewhichconformstoISO5167-16Unitund
43、ertest3FlowstraughtenerwhichconformstoISO5167-17Chambersuchasreverberationroom4Thislengthtobestraightanditscrosssectionuniformandequaltothatoftheinletspigot8PeizometricringNOTEDualductunit:EachducttobemeasuredseperatelyFigure2TypicaltestinstallationtodetermineflowratecontrolcharacteristicsforunitsSD
44、;DDanddamperleakagecharacteristicsforallunitsPage 9EN 12589 : 2001Key1Heatexchanger8Piezometricring2FlowstraughtenerwhichconformstoISO5167-19FlowratemeasuringdevicewhichconformstoISO5167-13Thislengthtobestraightanditscrosssectionuniformandequaltothatoftheinletspigot10Pointsofmeasurementinoutletduct4
45、Totallengthofunit11Temperaturestationsinrectangularduct5Totallengthofunit12Temperaturestationsincircularduc6Outletductinternaldimensionsequaltothoseofunitoutlet13Pointsofmeasurementininletduct(s)oroutletduct(s)extensionofmultipleoutletunit7UnitundertestFigure3Typicalinstallationtodeterminetemperatur
46、emixingefficiencyDD;IU;IFS;IFPPage 10EN 12589 : 2001Page 11EN 12589 : 20015.3.1.2.3 Reduce the pressure differential to zero, and then restore it the level at which the lastmeasurement was made. Increase the pressure differential in stages approximatelyto the values given intable 6 until the maximum
47、 pressure differential is reached. At each stage record the test measurements inaccordance with 5.2.When making the adjustments to pressure, if the pressure rises above the next specified value, reduce itto zero and then slowlyincrease it to the specified value before a further measurement is taken.
48、Table6 Pressuredifferentials(valuesinR10series)2 000; 1 600; 1 250; 1 000; 800; 630; 500; 400; 315; 250; 200; 125; 63; in Pa5.3.1.2.4 Repeat procedures 5.3.1.2.2 and 5.3.1.2.3 for flow rates at mid-range and minimum settingsas typically shown in figure 4.5.3.1.2.5 Dual duct units with mixing dampers
49、 and separate air flow rate controller: repeat procedures5.3.1.2.2 and 5.3.1.2.3 for mixing valve settings at approximately100 %; 75 %; 25 % and 0 %. In thecase of a VAV-dual duct unit, repeat this procedure for the maximum and minimum flow rate setting.For dual ducts, with air flow rate controllers for each supplyduct, see 5.3.1.2.4.5.3.2 UnitswithinductionIU,IFS,IFPNOTE This test is required for pressure independent units only.5.3.2.1 Test installationA typical test installation is shown in figure 5. Performanc
