1、STD-BSI BS EN IS0 125bY-ENGL 2001 W Lb24bb7 0887383 bb 111 BRITISH STANDARD 3s EN IS0 12569:ZOOl Thermal insulation in buildings - Determination of air change in buildings - Ilracer gas dilution method The European Standard EN IS0 12569:2000 has the status of a British Standard ICs 91.120.10 NO COPY
2、ING WITHOUT BSI PEBMISSION EXCEPT As PERMITTED BY COPYRIGHT LAW STD.BSI BS EN IS0 LZSbS-ENGL 2001 1624667 0887382 522 BS EN IS0 12569:2001 National foreword This British Standard is the official Engish language version of EN IS0 12569:2000. It is identical with IS0 125692000. The UK participation in
3、 its preparation was entrusted by Technical Committee RHE/s, Themial insulating materials, to Subcommittee RHE/!3/2, Thermal properties of insulating materials, which has the responsibiity to: - aid enquirers to understand the text; - present to the responsible inniational/European committee any enq
4、uiries on the interpretation, or proposals for change, and keep the UK interests informed; - monitor related international and European developmenb and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references At
5、tention is cirawn to the fact that CEN and CENELEC Standards nody include an annex which iists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI
6、 Stanbds Catalogue under the section entitied “international Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include aii the necessary provisions of a contract. Users of British Standards are responsib
7、le for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN IS0 title page, the EN IS0 foreword page, the IS0 title page, pages ii to v, a biank p
8、age, pages 1 to 22, the annex ZA page and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. This British Standard, having been prepared under the dkction of the Engineering Sector Committee, was published under the authority of the Standar
9、ds Committee and comes into effect on 15 February 2001 Amendments issued since publication Q BSI 02-2001 ISBN O 580 36876 9 STD-BSI BS EN IS0 L25b9-ENGL 2001 D lbZYbb9 0889383 Yb9 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 12569 November 2000 ICs 09.012.10 English version Thermal insul
10、ation in buildings - Determination of air change in buildings - Tracer gas dilution method (IS0 12569:2000) Isolation thermique dans les btiments - Dtermination du renouvellement dair dans les btiments - Mthode de dilution de gaz traceurs (IS0 12569:2000) Wrmetechnisches Verhalten von Gebuden - Best
11、immung des Luftwechsels in Gebuden - Indikatorgasverfahren (IS0 12569:2000) This European Standard was approved by CEN on 1 November 2000. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a nation
12、al standard without any alteration. Up-to-date lists and bibliographical 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 ot
13、her language made by translation under the responsibility of 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, Gr
14、eece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMlTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 51050 Brussels 2000 CEN All rights of
15、 exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN IS0 12569:2000 E Foreword The text of the International Standard IS0 12569:2000 has been prepared by Technical Committee ISOTTC 163 “Thermal insulation“ in collaboration with Technical Committee CEN/T
16、C 89 “Thermal performance of buildings and building components“, the secretariat of which is held by SIS. 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 2001, and conflicting national standar
17、ds shall be withdrawn at the latest by May 2001. 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, Irel
18、and, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard IS0 12569:2000 was approved by CEN as a European Standard without any modification. NOTE: Normative references to International Standard
19、s are listed in annex ZA (normative). STD.BSI BS EN IS0 125b9-ENGL 2OOL lb2qbb9 0889385 231 EN IS0 12669:2000 INTERNATIONAL STANDARD IS0 First edition 2000-1 1-01 Thermal performance of buildings - Determination of air change in buildings - Tracer gas dilution method Performances thermiques des btim
20、ents - Dtermination du renouvellement dair dans les btiments - Mthode de dilution de gaz traceurs Reference number IS0 12569:2000(E) STD.BS1 ES EN IS0 125b9-ENGL 2001 W 1b24bb9 0869386 178 EN IS0 12669:2000 Contents Page Foreword . iv Introduction . v 1 scope 1 2 Normative reference 1 3 Terms and de
21、finitions . 1 4 Apparatus . 2 Expression of results 8 5 Procedure . 4 6 7 Accuracy . 10 8 Test report 10 Annex A (informative) Tracer gas analyser accuracy 11 Annex B (informative) Tracer gas analyser calibration . 13 Annex C (informative) Confidence intervals . 14 Annex D (informative) Propagation
22、of error analysis 16 Annex E (informative) How to choose the test methods . 18 Annex F (informative) Types of tracer gas . 19 Annex G (informative) Details on the test report . 20 Bibliography 22 Previous page is blank . iii STD-BSI BS EN IS0 125b9-ENGL 2001 W Lb24bb9 0889387 004 EN IS0 12569:2000 F
23、oreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a te
24、chnical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters
25、of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard re
26、quires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights other than those identified above. IS0 shall not be held responsible for identifying any or all suc
27、h patent rights. International Standard IS0 12569 was prepared by Technical Committee ISO/TC 163, Thermal insulation, Subcommittee SC 1, Test and measurement methods. Annexes A to G of this International Standard are for information only. iv STD-BSI BS EN IS0 32569-ENGL 2001 M 1b24bb9 0889388 T40 EN
28、 IS0 12669:2000 I nt rod uct i on Air change often accounts for a significant portion of the heating or air-conditioning load of a building. It also affects the moisture and contaminant levels in the building. Moisture-laden air passing through cracks in the building envelope under the influence of
29、air pressure differences and through structural elements under the influence of vapour pressure differences can condense and cause material degradation. Air flow and air change rates depend on the size and distribution of air leakage sites, pressure differences induced by wind and temperature, mecha
30、nical system operation, and occupant behaviour. An appropriate level of ventilation is also required in all buildings for hygiene reasons. This International Standard presents three test methods that use the measurement of tracer gas concentrations to determine air change in a building or other encl
31、osure that can be characterized as a single zone. The measurement of tracer gas concentration, and sometimes the volume rate of flow at which the tracer gas is injected into the zone, allows calculation of the volume rate of air flow leaving the zone. The volume rate of incoming air flow can be infe
32、rred from this. The three test methods presented are: a) tracer gas decay (5.4), which tracks the decay rate of tracer gas concentration after an initial injection of tracer gas, b) constant injection (5.5), which tracks the tracer gas concentration resulting from a known, constant injection rate of
33、 tracer gas, and I c) constant concentration (5.6), which tracks the amount of tracer gas required to maintain it at a constant 1 concentration at a constant level. Each test method employs specific tracer gas injection and sampling strategies. Other techniques exist, but are beyond the scope of the
34、se test methods. I Because air change depends on such variable conditions as building operation, wind speed, and indoor-outdoor IS0 9972 should be used to measure airtightness. i temperatures, this International Standard does not provide information about building airtightness directly. I I V STDeBS
35、I ES EN IS0 L25bS-ENGL 2OOL 9 Lb2Ybb9 0889389 987 EN IS0 12669:2000 Thermal performance of buildings - Determination of air change in buildings - Tracer gas dilution method 1 scope This International Standard describes the use of tracer gas dilution for determining the air change in a single zone as
36、 induced by weather conditions or mechanical ventilation. The procedures for tracer gas dilution include concentration decay, constant injection and constant concentration. Tracer gas concentration is determined by a gas analyser. Air change rate is directly calculated from the rate of change of tra
37、cer gas concentration by the tracer gas decay method. Air flow rate is calculated directly from the tracer gas flow rate by the constant injection or constant concentration method. These test methods are restricted to any single tracer gas. The associated data analysis assumes that the tracer gas co
38、ncentration can be characterized within the zone with a single value. NOTE of the air flow rate from the outside to each zone, if the residential zones are kept at the same concentration. The constant concentration test method given in 5.6 is usually used for multiple zones and allows the measuremen
39、t 2 Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agree
40、ments based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IS0 and IEC maintain registers
41、of currently valid International Standards. IS0 7345, Thermal insulation - Physical quantities and definitions. 3 Terms and definitions For the purposes of this International Standard, the terms and definitions given in IS07345 and the following apply. 3.1 air flow rate V total volume of air passing
42、 through the zone to and from the outdoors per unit of time NOTE It is expressed in cubic metres per second or per hour (m3/s, m3/h). 3.2 air change rate n ratio of the total volume of air passing through the zone to and from the outdoors per unit of time to the volume of the zone NOTE It is express
43、ed in reciprocal seconds or reciprocal hours (l/s, l/h). 1 STD.BSI BS EN IS0 L2567-ENGL 2OOL - Lb24bb9 0889390 bT EN IS0 12569:ZOOO 3.3 building envelope boundary or barrier separating the interior volume of a building from the outside environment 3.4 single zone space or set of spaces wherein the c
44、oncentration of a tracer gas can be maintained uniformly throughout and that only exchanges air with the outside 3.5 tracer gas gas that can be mixed with air and measured in very small concentrations in order to study air change NOTE The tracer gas is not used to study air movement. Rather it is us
45、ed to assess air transfer, exchange or infiltration. Types of tracer gas, measuring apparatus, limits of measurement, allowable concentration and specific gravity of the tracer gases are given in annex F. A gas at a temperature extremely different from that of the room should not be used for the tra
46、cer gas dilution method. 4 Apparatus The apparatus includes means for distributing the tracer gas, means for obtaining air specimens, a gas analyser to measure tracer gas concentration in the air specimens, and other measurement devices, as follows. 4.1 Tracer gas concentration standard Use a source
47、 of air with a known concentration of tracer gas. Use the tracer gas within safe limits for concentration. Avoid conditions where the amount of tracer gas that may be absorbed onto surfaces and into subordinate enclosures is significant, compared with the amount of tracer gas in the zone. Avoid cond
48、itions where the added amount of tracer gas is small, compared to the atmospheric background level of that gas. The use of radioactive tracer gases should be avoided. 4.2 Tracer gas injection and distribution apparatus Choose an apparatus from one or more of the following, as appropriate to the test
49、 method. 4.2.1 Graduated syringe, or other container of known volume with a means for controlled release of its content. 4.2.2 flow controller, or other tracer gas flow rate measurement and control device. Compressed tracer gas supply, with a critical orifice, a critical orifice metering valve, an electronic mass 4.3 Tracer gas distribution devices Choose an apparatus from one or more of the following, as appropriate to the test method. 4.3.1 These fans are required so as not to give any influence on the air change rate. 4.3.2 All parts of the tubin
