BS EN 13141-10-2008 Ventilation for nbuildings — nPerformance testing of ncomponents products nfor residential nventilation nPart 10 Humidity controlled extract nair terminal devic.pdf

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1、BS EN13141-10:2008ICS 91.140.30,NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDVentilation forbuildings Performance testing ofcomponents/productsfor residentialventilationPart 10: Humidity controlled extractair terminal deviceThis British Standardwas published

2、underthe authority of theStandards Policy andStrategy Committee on 30November 2008 BSI 2008ISBN 978 0 580 57509 9Amendments/corrigenda issued since publicationDate CommentsBS EN 13141-10:2008National forewordThis British Standard is the UK implementation of EN 13141-10:2008.The UK participation in i

3、ts 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 contract.

4、Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 13141-10:2008EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13141-10May 2008ICS 91.140.30English VersionVentilation for buildings - Performance testing ofcompone

5、nts/products for residential ventilation - Part 10:Humidity controlled extract air terminal deviceVentilation des btiments - Essais de performance descomposants/produits pour la ventilation des logements -Partie 10 : Bouche dextraction dair hygrorglableLftung von Gebuden - Leistungsprfungen vonBaute

6、ilen/Produkten fr die Lftung von Wohnungen - Teil10: Feuchtegeregelte AbluftdurchlsseThis 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 EuropeanStandard the status of a n

7、ational 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, French, German). A version in

8、 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, Cyprus, Czech Republic, Denmark, Es

9、tonia, 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 EUROPEN DE NORMALISATIONEUROPIS

10、CHES 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 13141-10:2008: EBS EN 13141-10:2008EN 13141-10:2008 (E) 2 Contents Page Foreword. 3 1 Scope 5 2 Normat

11、ive references . 5 3 Terms and definitions. 5 4 Symbols and abbreviations . 5 5 Performance testing of aerodynamic and hygro-dynamic characteristics. 6 5.1 Aero and hygro-dynamic performances.6 5.1.1 Principle . 6 5.1.2 Test installation, conditions and uncertainty of measurement 6 5.1.3 Test proced

12、ure 8 5.1.4 Analysis of results 14 5.1.5 Test report . 14 5.2 Other tests . 14 5.2.1 Time response test . 14 5.2.2 Performance testing of acoustic characteristics. 15 Bibliography . 16 BS EN 13141-10:2008EN 13141-10:2008 (E) 3 Foreword This document (EN 13141-10:2008) has been prepared by Technical

13、Committee CEN/TC 156 “Ventilation for buildings”, 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 identical text or by endorsement, at the latest by November 2008, and conflicting national standards shall b

14、e withdrawn at the latest by November 2008. Attention is drawn 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 standa

15、rds on residential ventilation. The performance characteristics of the components/products for residential ventilation are given in EN 13142. The position of this document in the field of the mechanical building services is shown in Figure 1. According to the CEN/CENELEC Internal Regulations, the na

16、tional standards organizations of the following countries are bound 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

17、, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 13141-10:2008EN 13141-10:2008 (E) 4 Figure 1 Position of EN 13141-10 in the field of the mechanical building services BS EN 13141-10:2008EN 13141-10:2008 (E) 5 1 Scope This European Standard spe

18、cifies laboratory methods for testing humidity controlled exhaust air terminal devices. This European Standard applies to all controlled devices on indoor humidity, used in mechanical and natural powered residential ventilation systems. For instance, devices of the following types: humidity controll

19、ed devices with a manually adjustable opening; humidity controlled devices with fixed setting; humidity controlled devices self-adjusting on pressure difference. This European Standard describes tests intended to characterize: aero and hygro-dynamic performance; acoustic characteristics (including n

20、oise production of the device; insertion loss of the device; sound insulation); time response. 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 ed

21、ition of the referenced document (including any amendments) applies. EN 12792:2003, Ventilation for buildings Symbols, terminology and graphical symbols EN 13141-2:2004, Ventilation for buildings Performance testing of components/products for residential ventilation - Part 2: Exhaust and supply air

22、terminal devices 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12792:2003, EN 13141-2:2004 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 4 Symbols

23、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. BS EN 13141-10:2008EN 13141-10:2008 (E) 6 Table 1 Symbols and units Term Symbol Unit humidity minimum airflow qv minl. s-1maximum airflow qv maxl. s-1re

24、lative 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 and hygro-dynamic characteristics 5.1 Aero and hygro-dynamic performances 5.1.1 Principle This test consists of measuring several

25、 volume flow rates induced through a device by humidity conditions, under an applied static pressure difference, to define the flow rate/humidity characteristic curve. In the case of manually adjustable devices, a test according to EN 13141-2 shall be carried out at specific opening conditions speci

26、fied by the manufacturer. Some exhaust air terminal devices are designed to work under both natural and mechanical ventilation systems. In this case the manufacturer may have to specify two operational ranges, and the device shall be tested for each of them. 5.1.2 Test installation, conditions and u

27、ncertainty of measurement 5.1.2.1 Test installation and conditions The test facility shall include one room controlled both in humidity and temperature, representing indoor conditions. The airflow test rig may be either in this room or outside but in this case, it shall be verified that all test con

28、ditions are still valid, i.e leakages shall be included to achieve the overall uncertainty of measurement that is required. The test installation shall comply with those of EN 13141-2:2004, 4.1.2.1 for indoor rooms. The test facilities shall have a range from 300 Pa to 0 Pa. Special care to limit ai

29、r velocities around the inlet in the test box shall 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 airflow through the exhaust vent. BS EN 13141-10:2008EN 13141-10:2008 (E) 7 dllKey Locations of the measu

30、rement points d = 0,04 m l = 0,20 m Figure 2 Locations of measurement points To avoid difficulties in the control of the humidity and temperature controlled room, the volume should be big enough. The air permeability of the test equipment shall be measured with the test specimen sealed, over the sam

31、e range of pressure differences used during the performance testing of the specimen. The air permeability of the test equipment shall be reported and shall generate a leakage lower than 0,1 l. s-1at 100 Pa. NOTE For low airflow measurements, it can be necessary to introduce some intentional leakage.

32、 In this case, the leakage airflow 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

33、 measured with an uncertainty lower than: 0,3 + 0,03 (measured value) (l.s-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. BS EN 13141-10:2008EN 13141-10:2008 (E) 8 5.1.3 Test procedure 5.1.3.1

34、Choice of tests to be performed For fixed setting devices and manually adjustable, all the specified positions shall be tested with at least the minimum and maximum open positions. For a device or position humidity controlled, the measurements shall be taken (see 5.1.3.2) for at least one pressure d

35、ifference (chosen by the manufacturer) in the following pressure difference ranges (bands) given in Table 2. For positions without humidity control, the same measurements as for fixed device (according to EN 13141-2) in specific conditions shall be performed. For pressure difference controlled devic

36、es, self regulation shall be verified (see 5.1.3.3). For non pressure difference controlled devices, an additional and optional test shall be done according 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: use d

37、escription in 5.1.3.3. The environmental conditions existing during the tests, such as temperature and barometric pressure, shall be recorded. The volume flow rate qv measshould be directly measured or alternatively calculated from the measured value of mass flow rate qm. Table 2 Pressure difference

38、 rangesPressure difference, p Permissible deviation during test Pa Pa 10 1 20 1 50 2 80 5 100 5 160 5 The report shall give values of the flow exponent for the corresponding pressure difference as shown in Table 3. If the regression law coefficient is lower or equal to 0,95, a unique value of the fl

39、ow exponent shall be provided. BS EN 13141-10:2008EN 13141-10:2008 (E) 9 Table 3 Values of the flow exponent for the corresponding pressure difference Pressure difference, p Flow exponent, Kp (Pa) 10 Kp10 20 Kp20 50 Kp50 80 Kp80 100 Kp100 160 Kp160 The values Kp10 to Kp160 shall be calculated accord

40、ing to the following: qv(p) = qv(p nom) (p / p nom)KpFor humidity controlled extract air without pressure difference controlled device, the following correction shall be applied: measnomvmeasvppqq= where qv meas= measured value at pmeas, in l. s-1pmeas= test pressure, in Pa pnom= nominal test pressu

41、re given by the manufacturer, in Pa With qv = corrected value for the nominal pressure, in l. s-1For humidity controlled extract air with pressure difference controlled device, this correction shall not be applied. 5.1.3.2 Tests of humidity control The characteristic curve airflow vs indoor relative

42、 humidity shall be measured at the pressure difference defined by the manufacturer. The range of humidity during the test shall also be defined by the manufacturers declaration. The minimum value of humidity shall be the minimum declared less 20 % RH, so that minp1pmin pRH%20 NOTE 1 If this value is

43、 lower than 30 % RH, a minimum value of 30 % may be accepted for test conditions due to the difficulty of realisation. BS EN 13141-10:2008EN 13141-10:2008 (E) 10 The maximum value of humidity shall be the maximum declared plus 20 % RH, so that: RH%20maxp2pmax p+ NOTE 2 If this value is greater than

44、85 % RH, a maximum value of 85 % can be accepted for test conditions due to the difficulty of realisation. The tests shall be performed with first an increase of humidity from minimum p1to maximum p2, then a decrease back. This test shall be done in the same conditions as for isothermal measurements

45、. 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. If necessary, more points shall be tested to avoid steps of humidity larger than 10 % RH. Same points down t

46、o the minimum shall be measured while decreasing, which induces a minimum of 9 test points. Before measurements, the device shall at least realise such one cycle of humidity. The parameters are illustrated in Figure 3. Key X humidity Y airflow If p185 % RH then the maximum measurement point may be l

47、imited at 85 % RH. Figure 3 Test parameters The humidity declared range pmin,pmax and the declared airflow range qvmin,qvmax under the test pressure difference shall be given by the manufacturer. The repartition of the measurement points shall be equally distributed on the declared range. BS EN 1314

48、1-10:2008EN 13141-10:2008 (E) 11 Key X humidity Y airflow Figure 4 Example of distribution of measurement points The condition p 10 % RH shall be applied: the number of measurement points shall be chosen to ensure a relative humidity difference lower than 10 % RH between 2 points (see Figure 4). The

49、 number of measuring points shall be chosen accordingly if the declared range is wider than 40 %. The nine minimum measurement points shall be detailed as follows: one for qv min, three for the increasing humidity within the range (p min,p max), one for qv max, three for the decreasing humidity within the range (p min,p max), one for qv min. NOTE If the hysteresis of the curve is relatively important, it should be checked that all the relevant points are