BS EN 13141-9-2008 Ventilation for nbuildings — nPerformance testing of ncomponents products nfor residential nventilation nPart 9 Externally mounted humidity ncontrolled air trans.pdf

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1、BS EN13141-9:2008ICS 91.140.30,NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDVentilation forbuildings Performance testing ofcomponents/productsfor residentialventilationPart 9: Externally mounted humiditycontrolled air transfer deviceThis British Standardwas p

2、ublished underthe authority of theStandards Policy andStrategy Committee on 30November 2008 BSI 2008ISBN 978 0 580 57508 2Amendments/corrigenda issued since publicationDate CommentsBS EN 13141-9:2008National forewordThis British Standard is the UK implementation of EN 13141-9:2008.The UK participati

3、on in its preparation was entrusted to TechnicalCommittee RHE/2, Ventilation for buildings, heating and hot waterservices.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a con

4、tract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 13141-9:2008EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13141-9May 2008ICS 91.140.30English VersionVentilation for buildings - Performance testing ofco

5、mponents/products for residential ventilation - Part 9:Externally mounted humidity controlled air transfer deviceVentilation des btiments - Essais de performance descomposants/produits pour la ventilation des logements -Partie 9: Dispositif de transfert dair hygrorglable mont enextrieurLftung von Ge

6、buden - Leistungsprfung vonBauteilen/Produkten fr die Lftung von Wohnungen - Teil9: Feuchtegeregelte ZuluftdurchlsseThis European Standard was approved by CEN on 11 April 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eur

7、opeanStandard 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 CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English

8、, 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cypr

9、us, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT

10、EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13141-9:2008: EBS EN 13141-9:2008EN 13141-9:2008 (E) 2 Contents Page Fo

11、reword. 3 1 Scope 5 2 Normative references . 5 3 Terms and definitions. 5 4 Symbols and abbreviations . 6 5 Performance testing of aerodynamic characteristics. 6 5.1 Aero and hygro-dynamic performance. 6 5.1.1 Principle . 6 5.1.2 Test installation, conditions and uncertainty of measurement 6 5.1.3 T

12、est procedure 9 5.1.4 Analysis of results 17 5.1.5 Test report . 18 5.2 Other tests . 18 5.2.1 Time response test . 18 5.2.2 Air tightness when closed (for closeable externally mounted air transfer device) . 19 5.2.3 Air diffusion in the occupied zone 19 5.2.4 Sound insulation . 20 Annex A (normativ

13、e) Calculation method for the temperature coefficient 21 A.1 General. 21 A.2 Analysis . 21 A.3 Procedure 22 Bibliography . 24 BS EN 13141-9:2008EN 13141-9:2008 (E) 3 Foreword This document (EN 13141-9:2008) has been prepared by Technical Committee CEN/TC 156 “Ventilation for buildings”, the secretar

14、iat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2008, and conflicting national standards shall be withdrawn at the latest by November 2008. Attention is drawn

15、 to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document is one of a series of standards on residential ventilation. The performance characteristic

16、s of the components/products for residential ventilation are given in EN 13142. The position of this document in the field of mechanical building services is shown in Figure 1. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are boun

17、d to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Sw

18、itzerland and the United Kingdom. BS EN 13141-9:2008EN 13141-9:2008 (E) 4 Figure 1 Position of EN 13141-9 in the field of mechanical building services BS EN 13141-9:2008EN 13141-9:2008 (E) 5 1 Scope This European Standard specifies laboratory methods for testing humidity controlled air inlets operat

19、ing under pressure differences. It applies to all devices located between one room and outside and controlled on indoor humidity. For instance, devices of the following types: humidity controlled devices with fixed setting; manually openable or closable humidity controlled devices; humidity controll

20、ed devices self-adjusting on pressure difference. It describes tests intended to characterise: aero and hygro-dynamic performance; air tightness when closed (for closable humidity controlled air inlet); air diffusion in the occupied zone; sound insulation; time response. This European Standard does

21、not apply to the evaluation of air filtration, condensation risk and noise production. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of

22、 the referenced document (including any amendments) applies. EN 12792:2003, Ventilation for buildings Symbols, terminology and graphical symbols EN 13141-1:2004, Ventilation for buildings Performance testing of components/products for residential ventilation Part 1: Externally and internally mounted

23、 air transfer devices 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12792:2003, EN 13141-1:2004 and the following apply. 3.1 hysteresis value defined as the difference of relative humidity, read on the response curve for the same flow, in % RH BS EN

24、 13141-9:2008EN 13141-9:2008 (E) 6 4 Symbols and abbreviations For the purposes of this document the symbols and units given in EN 12792:2003 and the symbols and units given in Table 1 apply. Table 1 Symbols and units Term Symbol Unit humidity minimum airflow qvmin l. s-1maximum airflow qvmax l. s-1

25、relative humidity p% RH maximum relative humidity for minimum airflow p min % RH minimum relative humidity for maximum airflow p max% RH 5 Performance testing of aerodynamic characteristics 5.1 Aero and hygro-dynamic performance 5.1.1 Principle This test consists of measuring several volume flow rat

26、es induced through a device controlled by humidity conditions, under an applied static pressure difference, to define the flow rate/humidity characteristic curve. 5.1.2 Test installation, conditions and uncertainty of measurement 5.1.2.1 Test installation and conditions The test facility shall inclu

27、de two rooms controlled both in humidity and temperature, the first one representing outside conditions, the other one indoor conditions as described in Figure 3. The test installation and the indoor room shall comply with 4.1.2.1 of EN 13141-1:2004. The test facilities shall have a range from 0 Pa

28、to + 100 Pa. Special care to limit air velocities around the inlet in the test box should be taken: air velocities shall be measured at locations specified in Figure 2. The measures shall not exceed 0,10 m.s-1at these points without air flow through the air inlet. BS EN 13141-9:2008EN 13141-9:2008 (

29、E) 7 dllKey Locations of the measurement points d = 0,04 m l = 0,20 m Figure 2 Locations of measurement points BS EN 13141-9:2008EN 13141-9:2008 (E) 8 12354A B5Key A humidity and temperature controlled room for indoor conditions B humidity and temperature controlled room for outdoor conditions 1 dev

30、ice under test 2 test plate dimensions as in EN 13141-1 (see Figure 4) 3 insulated wall to avoid condensation in room A 4 avoid high air velocity around the air intake of the device under test e.g. a perforated plate can be used 5 static pressure probes or piezometric ring Figure 3 Test installation

31、 To avoid difficulties in the control of the room (A), the volume shall be big enough, especially for non-isothermal conditions measurements for which the “outside air” room (B) may strongly interfere with the climate in room (A). The size of room (B) is normally of lesser importance as the climate

32、conditions are not to be so accurate as in room (A), nevertheless it shall not affect the low velocity on the air intake of the device under test. The wall between room (A) and room (B) shall be insulated to avoid low temperature radiation on the device under test. Test plates shall conform to EN 13

33、141-1. The air permeability of the test equipment between the air inlet and the airflow/pressure measurement devices shall be measured with the test specimen sealed, over the same range of pressure differences used during the performance testing of the specimen. The air permeability of the test equi

34、pment shall be reported and shall generate a leakage lower than 1 l. s-1 at 100 Pa. BS EN 13141-9:2008EN 13141-9:2008 (E) 9 For low airflow measurements, it may be necessary to introduce some additional by-pass flow. This by-pass flow shall be measured alone and reported. In all cases, the leakage a

35、irflow shall be measured and used in the test report for correction of values and for uncertainty calculations. 5.1.2.2 Uncertainty of measurement The pressure shall be measured with an uncertainty lower than: 0,2 + 0,03 (measured value) (Pa) The volume flow rate shall be measured with an uncertaint

36、y lower than: 0,3 + 0,03 (measured value) (ls-1) The temperature shall be measured with an uncertainty lower than 0,5 K. The relative humidity shall be measured with an uncertainty lower than 2 % RH. 5.1.3 Test procedure 5.1.3.1 Choice of tests to be performed To check the humidity control of the de

37、vices, the measurements shall be taken in isothermal conditions (see 5.1.3.2) for at least one pressure difference (chosen by the manufacturer) in the following pressure difference ranges (bands) given in Table 2: 1, 2, 4, 10 or 20 Pa. Measurements in non-isothermal conditions (see 5.1.3.3) at the s

38、ame chosen pressure shall be made if the sensor can be influenced by outdoor air temperature. Table 2 Pressure difference ranges Pressure difference, p Permissible deviation during test Pa Pa 1 0,25 2 0,5 4 1 10 1 20 1 For manually openable or closable devices, in addition, the tests of EN 13141-1 s

39、hall be done in open and closed conditions. For pressure difference controlled devices, in addition self regulation shall be verified (see 5.1.3.4) in isothermal conditions. BS EN 13141-9:2008EN 13141-9:2008 (E) 10 For non pressure difference controlled devices, an additional test shall be done acco

40、rding to EN 13141-1 to determine the flow exponent at the middle point of the response curve to measure the impact of pressure on the aperture. The test procedure of 5.1.3.4 of this document and 4.1.3 of EN 13141-1:2004 shall be used for fixed devices. The report shall give values of the flow expone

41、nt for the corresponding pressure difference as shown in Table 3. If the regression law coefficient is lower than or equal to 0.95, a unique value of the flow exponent shall be provided. Table 3 Values of the flow exponent for the corresponding pressure difference Pressure difference, p Flow exponen

42、t, Kp (Pa) 1 Kp1 2 Kp2 4 Kp4 10 Kp10 20 Kp20 The values Kp1 to Kp20 shall be calculated according to the following: qv(p) = qv(p nom) (p / p nom)KpThe environmental conditions existing during the tests such as temperature, barometric pressure shall be recorded. For humidity controlled air inlet with

43、out self regulating device, the following correction shall be applied: measnomvmeasvppqq= where qv measis the measured value at pmeas, in ls-1pmeasis the test pressure, in Pa pnomis the nominal test pressure given by the manufacturer, in Pa With qvis the corrected value for the nominal pressure, in

44、ls-1For humidity controlled air inlet with self regulating device, this correction shall not be applied. 5.1.3.2 Isothermal tests of humidity control 5.1.3.2.1 General In this test the outdoor air conditions (temperature, humidity) shall be fixed. The indoor temperature shall be fixed and the relati

45、ve humidity varies. Indoor and outdoor temperature shall be equal. BS EN 13141-9:2008EN 13141-9:2008 (E) 11 5.1.3.2.2 Outdoors conditions Fixed temperature: (21 +/- 1) C Fixed relative humidity: (55 +/- 5) % RH 5.1.3.2.3 Indoors conditions The characteristic curve airflow vs indoor relative humidity

46、 shall be measured at the pressure difference defined by the inlet manufacturer. The range of humidity during the test shall also be defined in the manufacturers declaration. The minimum value of humidity p1shall be the minimum declared less 20 % RH, so that minp1pmin pRH%20 NOTE If this value is lo

47、wer than 30 % RH, a minimum value of 30 % may be accepted for test conditions due to the difficulty of realisation. The maximum value of humidity shall be the maximum declared plus 20 % RH, so that RH%20maxp2pmax p+ The tests shall be performed with first an increase of humidity from minimum p1to ma

48、ximum p2,then a decrease back. This test shall be done in the same conditions as for isothermal measurements. The measurements shall be done at minimum humidity, in three humidity regularly spaced in between minimum and maximum (one in the middle point) and then at maximum for the increasing cycle.

49、If necessary, more points shall be tested to avoid steps of humidity larger than 10 % RH. Similar points shall be measured while decreasing, which induces a minimum of nine test points. Before measurements, the inlet shall at least realise such one cycle of humidity. BS EN 13141-9:2008EN 13141-9:2008 (E) 12 Key X humidity Y airflow If p185 % RH, then the maximum measurement point shall be limited at 85 % RH. Figure 4 Test parameters The humidity declared range pmin, pmax