1、 Reference number ISO 21927-3:2006(E) ISO 2006INTERNATIONAL STANDARD ISO 21927-3 First edition 2006-11-15 Smoke and heat control systems Part 3: Specification for powered smoke and heat exhaust ventilators Systmes de contrle de fume et de chaleur Partie 3: Spcifications pour les ventilateurs mcaniqu
2、es dvacuation des fumes et de la chaleur ISO 21927-3:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on th
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5、rm the Central Secretariat at the address given below. ISO 2006 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from e
6、ither ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2006 All rights reservedISO 21927-3:2006(E)
7、ISO 2006 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Design requirements 4 4.1 Application classes 4 4.2 Motor rating . 4 4.3 Motor specification. 4 4.4 Hot-gas fan 4 5 General testing procedures . 4 6 Performan
8、ce requirements and classification. 5 6.1 Temperature/time classification 5 6.2 Flow and pressure 5 6.3 Outer surface temperature and cooling air temperature of insulated ventilators . 5 6.4 Wind load. 6 6.5 Snow load 6 6.6 Operation at low temperature 6 6.7 Reliability . 6 6.8 Performance data of v
9、entilators 7 7 Marking 7 8 Evaluation of conformity 7 8.1 General. 7 8.2 Initial type testing . 7 8.3 Factory production control 8 Annex A (normative) Type approval schedule for a range of ventilators 9 Annex B (normative) Type approval schedule for a product range of motors 16 Annex C (normative) T
10、est method for performance of powered ventilators at high temperature 17 Annex D (normative) Test method for resistance to temperature of electric motors for use in powered ventilators 23 Annex E (normative) Test method for operation under load. 27 Annex F (normative) Direct field of application for
11、 powered smoke- and heat-exhaust ventilators. 28 Bibliography . 29 ISO 21927-3:2006(E) iv ISO 2006 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Stan
12、dards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also t
13、ake part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees
14、is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibil
15、ity that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 21927-3 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire fighting, Subcommittee SC 11, Smoke a
16、nd heat control systems and components. ISO 21927 consists of the following parts, under the general title Smoke and heat control systems: Part 1: Specification for smoke barriers Part 2: Specification for natural smoke and heat exhaust ventilators Part 3: Specification for powered smoke and heat ex
17、haust ventilators ISO 21927-3:2006(E) ISO 2006 All rights reserved v Introduction Smoke- and heat-exhaust ventilation systems create a smoke-free layer above the floor by removing smoke and thus improve the conditions for the safe escape and/or rescue of people and animals and the protection of prop
18、erty and permit the fire to be fought while still in its early stages. They also exhaust hot gases released by a fire in the developing stage. The use of smoke- and heat-exhaust ventilation systems to create smoke-free areas beneath a buoyant smoke layer has become widespread. Their value in assisti
19、ng in the evacuation of people from construction works, reducing fire damage and financial loss by preventing smoke logging, facilitating fire fighting, reducing roof temperatures and retarding the lateral spread of fire is firmly established. For these benefits to be obtained, it is essential that
20、smoke- and heat-exhaust ventilators operate fully and reliably whenever called upon to do so during their installed life. A heat- and smoke-exhaust ventilation system is a scheme of safety equipment intended to perform a positive role in a fire emergency. It is important that components for smoke- a
21、nd heat-exhaust systems be installed as part of a properly designed smoke and heat system. Smoke- and heat-exhaust ventilation systems help to keep the escape and access routes free from smoke, facilitate fire-fighting operations by creating a smoke-free layer, delay and/or prevent flashover and thu
22、s full development of the fire, protect equipment and furnishings, reduce thermal effects on structural components during a fire, reduce damage caused by thermal decomposition products and hot gases. Depending on the design of the system and the ventilator, powered or natural smoke and heat ventilat
23、ors can be used in a smoke- and heat-control system. Powered smoke- and heat-exhaust ventilators can be installed in the roof or upper part of walls of buildings or in a ducted system with the ventilator inside or outside the smoke reservoir or in a plant room. It is important that powered smoke- an
24、d heat-exhaust ventilation systems operate based on powered ventilators. The performance of a powered smoke- and heat-exhaust system depends on the temperature of the smoke, size, number and location of the exhaust openings, the wind influence, size, geometry and location of the inlet air openings,
25、the time of actuation, the location and conditions of the system (for example arrangements and dimensions of the building). Smoke- and heat-exhaust ventilation systems are used in buildings or construction works where the particular (large) dimensions, shape or configuration make smoke control neces
26、sary. ISO 21927-3:2006(E) vi ISO 2006 All rights reservedTypical examples are single and multi-storey shopping malls, single and multi-storey industrial buildings and warehouses, atria and complex buildings, enclosed car parks, stairways, tunnels, theatres. Depending on differing circumstances and t
27、he situation of the building or construction works that can affect their performance, powered or natural smoke- and heat-exhaust ventilation systems can be used. It is important that powered and natural exhaust ventilators not be used to extract smoke and hot gases from the same smoke reservoir. Spe
28、cial conditions apply where gas extinguishing systems (e.g. in accordance with ISO 14520-1) are used. INTERNATIONAL STANDARD ISO 21927-3:2006(E) ISO 2006 All rights reserved 1 Smoke and heat control systems Part 3: Specification for powered smoke and heat exhaust ventilators 1 Scope This part of ISO
29、 21927 specifies requirements and gives methods for testing powered smoke- and heat-exhaust ventilators that are intended to be installed as part of a powered smoke- and heat-exhaust ventilation system. It also provides a procedure for approving a range of powered smoke- and heat-exhaust ventilators
30、 and their motors, from a limited number of tests. 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
31、any amendments) applies. ISO 834-1, Fire resistance tests Elements of building construction Part 1: General requirements ISO 5167 (all parts), Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full ISO 5221, Air distribution and a
32、ir diffusion Rules to methods of measuring air flow rate in an air handling duct ISO 5801, Industrial fans Performance testing using standardized airways ISO 10294-1, Fire resistance tests Fire dampers for air distribution systems Part 1: Test method ISO 13943, Fire safety Vocabulary ISO 21927-2:200
33、4, Smoke and heat control systems Part 2: Specification for natural smoke and heat exhaust ventilators IEC 60034-1, Rotating electrical machines Part 1: Rating and performance IEC 60034-2, Rotating electrical machines Part 2: Methods for determining losses and efficiency of rotating electrical machi
34、nery from tests (excluding machines for traction vehicles) 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 13943 and the following apply. 3.1 smoke- and heat-control system arrangement of components installed in a construction work to limit the effec
35、ts of smoke and heat from a fire ISO 21927-3:2006(E) 2 ISO 2006 All rights reserved3.2 smoke- and heat-exhaust system smoke-control system that exhausts smoke and heat from a fire in a construction work or part of a construction work 3.3 smoke- and heat-exhaust ventilation system SHEVS components jo
36、intly selected to exhaust smoke and heat to establish a buoyant layer of warm gases above cooler, cleaner air 3.4 natural ventilation ventilation caused by buoyancy forces due to differences in density of the gases because of temperature differences 3.5 powered ventilation ventilation caused by the
37、positive displacement of gases through a ventilator NOTE Fans are usually used. 3.6 ventilator device for enabling the movement of gases into or out of a construction work 3.7 exhaust ventilator device for the movement of gases out of the construction work 3.8 insulated motor motor thermally insulat
38、ed from the environment which generally includes a motor casing 3.9 smoke- and heat-exhaust ventilator SHEV device specially designed to move smoke and hot gases out of the construction work under conditions of fire 3.10 dual purpose ventilator smoke- and heat-exhaust ventilator that has provision t
39、o allow its use for comfort (i.e. day-to-day) ventilation 3.11 emergency ventilator smoke- and heat-exhaust ventilator that is not used for comfort (i. e. day-to-day) ventilation 3.12 automatically initiated powered smoke- and heat-exhaust ventilator powered smoke- and heat-exhaust ventilator that o
40、perates automatically after the outbreak of fire if called upon to do so 3.13 smoke reservoir region within a building limited or bordered by smoke curtains or structural elements and which, in the event of a fire, retains a thermally buoyant smoke layer 3.14 hot-gas fan fan that is suitable for han
41、dling hot gases for a specified time/temperature profile ISO 21927-3:2006(E) ISO 2006 All rights reserved 3 3.15 powered smoke- and heat-exhaust ventilator hot-gas fan that is suitable for handling hot gases for a limited period only 3.16 powered roof ventilator partition fan designed for mounting o
42、n a roof and having exterior weather protection 3.17 insulated ventilator ventilator insulated to limit the external surface temperature to reduce the danger of injury to persons or damage to materials 3.18 smoke-reservoir ventilator ventilator suitable for operation fully immersed in a smoke reserv
43、oir 3.19 non-smoke-reservoir ventilator ventilator not suitable for operation fully immersed in a smoke reservoir 3.20 powered ventilator product range physically similar ventilators using the same form of construction and materials throughout, with the same methods of impeller construction and moto
44、r mounting and construction, and electrical connection in which the following can vary across the range: overall dimensions of the units; impeller diameter and width, hub size, blade length and number of blades of the impeller; size of the motor 3.21 powered ventilator motor range motors that are ph
45、ysically similar, using the same form of construction, i.e. same materials and manufacturing method for carcase, cooling impeller, when fitted, and end covers; same insulation specification that includes sheet insulation used for coil separation and slot insulation, winding-impregnation material (va
46、rnish or resin, etc.), lead insulation, terminal blocks and any other materials that can affect the integrity of the insulation; same bearing type, class of fit, lubricant and arrangement, with motor windings based on the same maximum winding temperature and class of insulation, in which the followi
47、ng can vary across the range: frame size; rotational speed; electrical windings, including multi-speed; form of mounting, e.g. foot, flange, pad, clamp, etc. 3.22 motor rating maximum power that the motor delivers continuously without exceeding the allowable temperature rise 3.23 fire position posit
48、ion of a component to be reached and maintained while venting smoke and heat ISO 21927-3:2006(E) 4 ISO 2006 All rights reserved4 Design requirements 4.1 Application classes A powered ventilator shall be classified into one or more of the following application classes: insulated or uninsulated; smoke
49、 reservoir or non-smoke reservoir; dual purpose or emergency only use; ducted cooling air required. 4.2 Motor rating 4.2.1 The motors shall be selected for continuous operation at the power required for normal ambient temperature, not just for operation at high temperature. 4.2.2 Motor ratings shall be limited either by the temperature rise for one class lower than the insulation class of the motor, as defined in IEC 60034-1 and as given in Table 1 of
