1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 15727:2010Ventilation for buildings Ducts and ductworkcomponents, leakageclassification and testingBS EN 15727:2010 BRITISH STANDARDNational forewordThis British Standard i
2、s the UK implementation of EN 15727:2010.The UK participation 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 beobtained on request to its secretary.This publication does
3、not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 68817 1ICS 91.140.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of th
4、eStandards Policy and Strategy Committee on 31 July 2010Amendments issued since publicationDate Text affectedBS EN 15727:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15727 May 2010 ICS 91.140.30 English Version Ventilation for buildings - Ducts and ductwork components, leakage classifica
5、tion and testing Ventilation des btiments - Composants de rseaux, classification de ltanchit et essais Lftung von Gebuden - Luftleitungen und Luftleitungsbauteile, Klassifizierung entsprechend der Luftdichtheit und Prfung This European Standard was approved by CEN on 30 April 2010. CEN members are b
6、ound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the
7、 CEN 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same s
8、tatus as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portu
9、gal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means
10、reserved worldwide for CEN national Members. Ref. No. EN 15727:2010: EBS EN 15727:2010EN 15727:2010 (E) 2 Contents Page Foreword 3Introduction .41 Scope 62 Normative references 63 Terms, definitions and symbols .63.1 Terms and definitions .63.2 Symbols 84 Instrumentation 94.1 Calibration 94.2 Air fl
11、ow rate measurement 94.3 Pressure measurement .94.4 Temperature measurement .95 Leakage .96 Test rig specifications 107 Test procedure 117.1 Method for testing a technical ductwork product . 117.2 Calculation of the total joint length (L) . 117.3 Calculation of the virtual product surface area (Ac)
12、117.4 Correction of leakage . 127.5 Calculation of the product tightness factor (fc) . 128 Test report . 12Bibliography . 13BS EN 15727:2010EN 15727:2010 (E) 3 Foreword This document (EN 15727:2010) has been prepared by Technical Committee CEN/TC 156 “Ventilation for buildings”, the secretariat of w
13、hich 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 2010, and conflicting national standards shall be withdrawn at the latest by November 2010. Attention is drawn to the
14、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. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countri
15、es are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sloveni
16、a, Spain, Sweden, Switzerland and the United Kingdom. BS EN 15727:2010EN 15727:2010 (E) 4 Introduction The position of this standard in the field of mechanical services is shown in Figure 1. BS EN 15727:2010EN 15727:2010 (E) 5 Mechanical Building Services Control systems Ventilation and air conditio
17、ning Heating systems systems Air handling units Ductwork Installation Handing over Circular sheet metal ducts Dimensions Flexible ducts Determination of mechanical energy loss Hangersand supports Rectangular sheet metal ducts. Dimensions Measurement of duct surface area Requirements for ductwork com
18、ponents to facilitate maintenance Flanges Identification Circular sheet metal ducts Strength and leakage Rectangular sheet metal ducts Strength and leakage Ductwork made of insulation duct boards Technical ductwork products, leakage classification and testing Figure 1 Position of this standard in th
19、e field of mechanical services BS EN 15727:2010EN 15727:2010 (E) 6 1 Scope This European Standard applies to technical ductwork products, intended for installation in ductwork conforming to EN 1505 and EN 1506, used in air conditioning and ventilation systems defined in the scope of CEN/TC 156. This
20、 document specifies the leakage requirements for technical ductwork products, i.e. components in the ductwork that has more functions than conveying air, such as sound attenuators, filter boxes and duct fans, etc. The following products are not within the scope of this document: ductwork components
21、like bends, reducers, ducts and T-pieces. EN 12237 and EN 1507 apply; flexible ducts according to EN 13180; ducts made of insulation ductboards according to EN 13403; dampers according to EN 1751; air handling units according to EN 1886. This document is a parallel standard to EN 12237, EN 1507 and
22、EN 1751, based on the same leakage classification. 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 the referenced document (including
23、any amendments) applies. EN 1505, Ventilation for buildings Sheet metal air ducts and fittings with rectangular cross section Dimensions EN 1506, Ventilation for buildings Sheet metal air ducts and fittings with circular cross-section Dimensions EN 12792:2003, Ventilation for buildings Symbols, term
24、inology and graphical symbols 3 Terms, definitions and symbols 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12792:2003 and the following apply. 3.1.1 nominal diameter dnnominal diameter according to EN 1506 for ductwork of circular cross-section
25、3.1.2 side lengths a and b side lengths according to EN 1505 for a ductwork of rectangular cross-section BS EN 15727:2010EN 15727:2010 (E) 7 3.1.3 total joint length L total length of the periphery of the joints of the connections of the technical products 3.1.4 product surface area Apactual externa
26、l envelope surface area for the technical ductwork product under test, excluding possible flanges and insertion parts 3.1.5 virtual product surface area Acquantity used for calculation of the permitted leakage for the product under test according to this document NOTE Acmay deviate from the product
27、surface area. 3.1.6 test pressure pteststatic pressure difference between the pressure within the product to be tested and the pressure of the ambient air 3.1.7 static pressure limit psmaximum design operating pressure for the ductwork according to its air tightness class NOTE The static pressure li
28、mits, positive and negative, for the appropriate air tightness class are specified in Table 3 and Table 4. 3.1.8 air leakage rate qvlair leakage flow rate of the product under test 3.1.9 measured air leakage rate qvlmeasuredair leakage flow rate before correction of temperature and atmospheric press
29、ure (see 7.4) 3.1.10 air temperature t temperature of the ambient air during the test 3.1.11 atmospheric pressure pabarometric pressure of ambient air during the test 3.1.12 tightness factor fcleakage flow rate per unit surface area of the product BS EN 15727:2010EN 15727:2010 (E) 8 3.1.13 air leaka
30、ge limit fmaxmaximum permitted leakage factor for the product according to its air tightness class 3.1.14 technical ductwork product component, including its connection pieces, installed in the ductwork that has one or more functions more than conveying air NOTE 1 Sound attenuators, filter boxes and
31、 duct fans are typical examples of technical ductwork products and can be tested separately according to this standard. These technical ductwork products are also a part of the ductwork and can be included in the tests in duct systems according to EN 12237 and EN 1507. NOTE 2 Ductwork components lik
32、e bends, reducers, ducts and T-pieces are not within the scope of this standard. EN 12237 and EN 1507 apply. 3.2 Symbols The nomenclature shown in Table 1 is used throughout this document. Table 1 Symbols Symbol Quantity Units ApProduct surface area m a and b Side lengths m dnNominal diameter m L To
33、tal joint length m AcVirtual product surface area m2fcProduct Tightness factor ms-1m-2fmaxAir leakage limit ms-1m-2paAtmospheric pressure Pa psStatic pressure limit (p - pa) Pa ptestTest pressure Pa qvlmeasuredMeasured air leakage rate ms-1qvlAir leakage rate ms-1t Air temperature C BS EN 15727:2010
34、EN 15727:2010 (E) 9 4 Instrumentation 4.1 Calibration Periodic calibration of the measurement system used in this test method according to manufacturer specifications or to standardized quality systems is required. 4.2 Air flow rate measurement Leakage air flow meters shall have a minimum indicated
35、accuracy according to the ranges in Table 2. Table 2 Accuracy of leakage air flow meters Range ms-1Accuracy of measurement Up to and including 1,8 10-5 9 10-7m3s-1More than 1,8 10-5 5 % 4.3 Pressure measurement Manometers for pressure measurement shall have an indicated accuracy not greater than 2 %
36、. 4.4 Temperature measurement Measurement of temperature is carried out, for example by means of mercury-in-glass thermometers, resistance thermometers or thermo-couples. Instruments shall be graduated, or give readings in intervals not greater than 0,5 K, and calibrated to an accuracy not greater t
37、han 0,25 K. 5 Leakage The leakage factor (fc) shall be lower than the air leakage limit (fmax), corresponding to the required air tightness class, specified in Table 3, for all test pressures (ptest) between the static pressure limit (ps). The air tightness classes are specified in Table 3 and Table
38、 4. The classes correspond to EN 12237:2003 and EN 1507:2006 but there will always be a difference between system and technical product classifications. Explanation: a number of technical ductwork products classified in air tightness class C will not automatically fill the demands for air tightness
39、class C in systems. BS EN 15727:2010EN 15727:2010 (E) 10 Table 3 Air tightness classification for technical ductwork products with circular cross section connections Air tightness class Static pressure limit (ps) Pa Air leakage limit (fmax) ms-1m-2Positive Negative A 500 500 0,027 ptest0,65 10-3B 1
40、000 750 0,009 ptest0,65 10-3C 2 000 750 0,003 ptest0,65 10-3D 2 000 750 0,001 ptest0,65 10-3Table 4 Air tightness classification for technical ductwork products with rectangular cross section connections Air tightness class Air leakage limit (fmax) ms-1m- Static pressure limits (ps) Pa Negative for
41、all pressure classes Positive at pressure class 1 2 3 A 0,027 ptest0,65 10- 200 400 B 0,009 ptest0,65 10- 500 400 1 000 2 000 C 0,003 ptest0,65 10- 750 400 1 000 2 000 D 0,001 ptest0,65 10- 750 400 1 000 2 000 6 Test rig specifications The product to be tested shall be sealed off before commencing t
42、he test with end caps and sealing of the jointing system specified by the manufacturer. The end caps do not have to be attached with screws or rivets that will cause damage to the product under test. The test rig shall be equipped so that the product can be pressurized and the pressure ptestand the
43、volume airflow qvlcan be measured, see example in Figure 2. BS EN 15727:2010EN 15727:2010 (E) 11 3214Key 1 Product under test 2 Pressure meter ptest 3 Air flow meter qvl 4 End caps Figure 2 Arrangement for leakage measurement in technical ductwork products 7 Test procedure 7.1 Method for testing a t
44、echnical ductwork product The test product shall be subjected to several test pressures, at least five positive and five negative, within a range of test pressures up to and including the static pressure limits (ps). The leakage rate reading shall be recorded under stable conditions, i.e. when each
45、test pressure has been maintained within 5 % of the specified value for 5 min. 7.2 Calculation of the total joint length (L) The total joint length, in metres, for a product of circular cross-section is the sum of the joint perimeter of each connection (1 to n). L = (d1 + d2 + . dn) (1) The total jo
46、int length, in metres, for a product of rectangular cross-section is the sum of each joint perimeter. L = 2 (a1 + b1 + a2 + b2 + . an + bn) (27.3 Calculation of the virtual product surface area (Ac) The virtual product surface area Ac, in square metres, is: Ac= L 0,5 (3) or BS EN 15727:2010EN 15727:
47、2010 (E) 12 Ac= Ap(the product surface area) (4) whichever is the larger. 7.4 Correction of leakage The measured leakage flow rate, in cubic metres per second, shall be corrected if the temperature (t) and/or atmospheric pressure (pa) are different from the standard conditions (+ 20 C and 101 325 Pa
48、) as follows: 325101273293avlmeasuredvlptqq += (5) 7.5 Calculation of the product tightness factor (fc) cvlcAqf = (6) in cubic metres per second per square metre. 8 Test report The test report shall include the following information on the tests: a) date and place of test according to EN 15727; b) t
49、est personnel and witnesses; c) a record of the test equipment, including the means of pressurising the sample and the measuring instruments with the appropriate calibration reference; d) air temperature and atmospheric pressure during the test; e) design of the product including jointing method, dimensions, angles, length, steel thickness; f) required air tightness class and design operating pressure of t
