1、Ventilation for buildings Ductworlc Dimensions and mechanical requirements for flexible ducts The European Standard EN 13180:2001 has the status ofa British Standard ICs 91.140.30 BS EN 13 180:2002 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 13180:2002 Amd. No. Natio
2、nal foreword Date Comments This British Standard is the official English language version of EN 13180:2001. The UKparticipation in its preparation was entrusted to Technical Committee RHE/2, Air distribution and air diffusion, which has the responsibility to: - - aid enquirers to understand the text
3、; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this committee can be obta
4、ined on request to its secretary. Cr oss-r e fer enc e s The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “F
5、ind” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from leg
6、al obligations. This British Standard. having - been prepared under the direction of the Engineering Summary Of pages Sector Policv and Stratew This document comprises a front cover, an inside front cover, the EN title page, -_ Committee, was published pages 2 to 17 and a back cover. under the autho
7、rity of the Standards policy and Strategy Committee on 25 January 2002 The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 25 January 2002 ISBN O 580 38918 9 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13180 November 2001 ICs 91.140.30 Englis
8、h version Ventilation for buildings - Ductwork - Dimensions and mechanical requirements for flexible ducts Ventilation des btiments - Rseau de conduits - Dimensions et prescriptions mcaniques pour les conduits flexibles Lftung von Gebuden - Luftleitungen - Mae und mechanische Anforderungen fr flexib
9、le Luftleitungen This European Standard was approved by CEN on 29 September 2001 CEN members are bound to comply with the CENKENELEC 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 bi
10、bliographical references concerning such national standards 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 translation under the responsibility o
11、f a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Nor
12、way, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldw
13、ide for CEN national Members. Ref. No. EN 13180:2001 E EN 13180:2001 (E) Contents page Foreword . 3 Introduction 5 1 Scope 5 2 Terms and definitions . 5 3 Dimensions for ducts 6 4 Mechanical properties and requirements . 8 5 Test methods . 9 6 Test report 15 Marking. labelling and packaging 15 7 Ann
14、ex A (informative) Example of a test sheet 16 Bibliography . 17 2 EN 13180:2001 (E) Rectangular sheet metal air ducts - Requirements for strength and leakage Foreword This European Standard has been prepared by Technical Committee CEN/TC 156 “Ventilation for buildings“, the secretariat of which is h
15、eld by BSI. Hangers and supports - Requirements for strength 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 May 2002, and conflicting national standards shall be withdrawn at the latest by May 20
16、02. This standard is one of a series of standards for ductwork used for ventilation and air conditioning of bu i Id i ngs for hum an occupancy. The position of this standard in the field of mechanical building services is shown in Figure 1. I Mechanical building services I Control Systems e Ventilat
17、ion and air conditioning systems r-l Heating Systems I I pi+ units Ductwork Installation Sheet metal air ducts with circular cross section - Dimensions Circular sheet metal air ducts -Requirements for strength and leakage I l I Sheet metal air ducts with rectangular cross section -Dimensions Measure
18、ment of duct surface Requirements for d uctwork components to facilitate maintenance Determination of Ductwork made of mechanical energy insulation ductboards Figure 1 - Position of EN 13180 in the field of mechanical building services 3 EN 13180:2001 (E) Annex A is informative. This standard includ
19、es a Bibliography. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Nether
20、lands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 4 EN 13180:2001 (E) I nt rod u cti on This standard has been prepared to: specify dimensions and tolerances for flexible ducts; give methods for the performance testing of flexible ducts; and enable assessment of minimum tec
21、hnical requirements. However because of the different types of flexible ducts and the various requirements in each application, some technical characteristics are presented as classes and may differ depending on the materials used. This standard can be used for the following applications: testing of
22、 components during and after manufacturing; attestation purposes. Temperature characteristics are supplied by the manufacturer. 1 Scope This standard specifies requirements and test methods for the technical characteristics of flexible ducts used in ventilation and air conditioning installations in
23、buildings for human occupancy. This standard identifies the following parameters which shall be tested or inspected: dimensions and tolerances; mechanical resistance. Acoustic, thermal, reaction to fire, and pressure loss properties of flexible ducts are not covered in this standard. 2 Terms and def
24、initions For the purposes of this European Standard, the following terms and definitions apply. 2.1 flexible duct duct which can be manually longitudinally compressed or decompressed and flexed without permanently damaging the cross section area 5 EN 13180:2001 (E) 2.2 air leakage factor air tightne
25、ss expressed as the air leakage rate per unit envelope area 2.3 crushing strength load, at right angles to the axis of the duct, per unit deflection up to a maximum of 10 % deformation 2.4 positive rated operating pressure tested maximum positive pressure at which the duct is rated 2.5 negative rate
26、d operating pressure tested maximum negative pressure at which the duct is rated 2.6 nominal length of a flexible duct actual length of a flexible duct after decompression and in an unstressed state 2.7 sag angle of deflection of one end of a flexible duct when extending in the air beyond the horizo
27、ntal support of the remainder of the flexible duct 2.8 test pressure (ps) static gauge pressure measured in the duct being tested 3 Dimensions for ducts 3.1 Ducts with circular cross section The deviations depending on the nominal diameter shall conform to Table 1 when verified in accordance with 5.
28、2. The nominal diameters shall also apply to fittings. 6 EN 13180:2001 (E) Table 1 - Nominal diameters and deviations Nominal diameter d mm 63 80 1 O0 125 150 160 200 250 300 31 5 355 400 450 500 560 630 Deviations mm Class A +I 0 +2 0 +3 0 Class B +3 0 +4 0 +6 0 I NOTE Figures in bold indicate reco
29、mmended sizes in accordance with EN 1506 Where a nominal diameter other than those given in Table 1 is specified by the client, the deviations used shall be those applicable to the nearest smaller nominal diameter given in Table 1. 3.2 Ducts with non-circular cross section The nominal dimensions and
30、 tolerances shall be as specified by the manufacturer 7 EN 13180:2001 (E) 4 Mechanical properties and requirements 4.1 General The sample shall not rupture, and all joining material shall remain intact during and after each of the tests specified in 5.1 to 5.9. 4.2 Nominal length Some flexible ducts
31、 are compressible and can be delivered in a compressed form for ease of transportation, the flexible duct then being extended for use. After decompression in accordance with 5.4, the measured length shall be not more than 3 % shorter than manufacturers quoted nominal length. 4.3 Sag Where required,
32、the sag shall be measured in accordance with 5.5. 4.4 Bending capability The sample shall be bent by hand three times, at its nominal diameter or at the bending radius quoted by the manufacturer, whichever is smaller, in accordance with 5.6. The initial height of the duct shall not reduce or expand
33、by more than 20 % at the center line of the test former at any time during the test. 4.5 Pressure Flexible ducts shall be capable of withstanding 2,5 times the manufacturers quoted positive pressure pr+ and negative rated pressure pr -1 when tested in accordance with 5.8. The height of the duct shal
34、l not reduce or expand by more than 20 % of the initial height at any time during the test. After a maximum of 5 min recovery time, the deformation shall not exceed 5 % of the initial height. 4.6 Crushing strength 4.6.1 Compressed duct Flexible ducts delivered in compressed form shall remain undamag
35、ed. They shall resist loads perpendicular to their axis. The crushing strength property to assess the mechanical resistance shall be specified according to the application. The minimum characteristics can be imposed at the national level. 4.6.2 Uncompressed duct A flexible duct can be subject to a l
36、oad perpendicular to its axis. The crushing strength property to assess the mechanical resistance shall be specified according to the application. The minimum characteristics can be imposed at the national level. 4.7 Air leakage The test shall be conducted in accordance with 5.9. The maximum air lea
37、kage factor, fm, for the appropriate air tightness class is given in Table 2. 8 EN 13180:2001 (E) Table 2 - Air tightness class Air tightness class A 0,65 0,027 x ps 0,65 0,009 x ps 0,65 0,003 x ps 5 Test methods 5.1 Test element Two samples of duct are required. Tests shall be performed on three el
38、ements: - Test element 1 is a compressed length of 100 mm cut from one end of a compressed duct; - Test element 2 is an initial sample of the duct; - Test element 3 is an uncompressed length of duct of maximum length 1,l m including an extra length of 0,lO m for collar fixation, cut from the middle
39、section of test element 2. Test element 1 shall be subjected to tests in accordance with 5.3, element 2 in accordance with 5.2 and element 3 in accordance with 5.4 to 5.9. 5.2 Nominal diameter The test element shall be entered by the minimum and not by the maximum diameter over the length on the tes
40、t apparatus shown in Figure 2. 9 EN 13180:2001 (E) r= 0,l d d, = nominal diameter + permitted negative deviation dmax = nominal diameter + permitted positive deviation Figure 2 - Test apparatus 5.3 Determination of crushing strength of a compressed duct A compressed length of 100 mm is cut from a ne
41、w compressed duct. This test specimen is placed in a suitable testing device to restrain the two extremities and subjected to a constantly increasing test load perpendicular to the axial direction and evenly distributed along its entire length, until the deformation in the direction of the load is e
42、qual to 10 % of the external diameter (see Figure 5). The rate of increase of deformation during the test shall not exceed 50 mm/min. The crushing strength shall be determined from the maximum test load F, that has been reached. 5.4 Nominal length The two extremities of the test element shall be ext
43、ended to receive an end cap for which the fixing elements shall not exceed 50 mm at each extremity. The compressed reference test element shall be placed horizontally and fixed at one end. The other end shall be subject to a load specified by the manufacturer but not exceeding the yield load specifi
44、ed in Table 3. The uncompressed length shall be the length measured after 5 min with the load still a pp I ied . 10 EN 13180:2001 (E) Table 3 - Yield load Nominal diameter d mm 1000 Pa 1000 Pa X X 400 Pa 200 Pa + X Test should be conducted if the positive rated pressure is higher than 100 Pa. The te
45、st pressure shall be maintained for five minutes and at the end of this period the leakage flow rate shall be recorded. The leakage factor shall be determined by the air leakage rate divided by the surface area n.,.i where i is the length of the reference test element and , is its nominal diameter.
46、14 EN 13180:2001 (E) 1 F, 0,lx dl 2 3 Key Test load 1 Pressure plate 2 Specimen Figure 5 - Test apparatus for crushing 6 Testreport The test report shall include a description of the construction and materials of the product as well as a test sheet recording the test results for each diameter. The t
47、est report should specify the references of the clauses containing the appropriate tests. An example of a test sheet is shown in annex A. 7 Marking, labelling and packaging The marking of the product or product packaging shall contain at least the nominal diameter and the nominal length of the duct.
48、 15 EN 13180:2001 (E) Nominal diameter: Nominal Length: Annex A Yield Strength: (i n f o rm a t ive) Bending radius (if different than nominal diameter): Example of a test sheet Table A.l - Example of a test sheet PRODUCT NAME: MANUFACTURER: Tigthness class: LABO RATO RY: DATE: DATA SUPPLIED BY THE
49、MANUFACTURER: Negative rated Pressure: Diameter I Length after decom pression Bend i ng (Maximum deformation) Positive Pressure test - Deformation during test - Deformation after test Negative pressure test - Deformation during test - Deformation after test Air leakage factor Crushing strength on compressed duct Crushing strength on uncompressed duct Packaging I Positive rated Pressure: Test requirement “) I Rem arks P NP Class (if any) ) P = Passed NP = Failed 16 EN 13180:2001 (E) Bibliography EN 1506, Ventilation for buildings - Sheet metal air ducts and f
