1、December 2015 English price group 19No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.120!%IVC“2385132www.din.deDI
2、N EN ISO 12759Fans Efficiency classification for fans (ISO 12759:2010, including Amd 1:2013);English version EN ISO 12759:2015,English translation of DIN EN ISO 12759:2015-12Ventilatoren Effizienzklassifizierung fr Ventilatoren (ISO 12759:2010, einschlielich Amd 1:2013);Englische Fassung EN ISO 1275
3、9:2015,Englische bersetzung von DIN EN ISO 12759:2015-12Ventilateurs Classification du rendement des ventilateurs (ISO 12759:2010, y compris Amd 1:2013);Version anglaise EN ISO 12759:2015,Traduction anglaise de DIN EN ISO 12759:2015-12www.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt,
4、the German-language original shall be considered authoritative.Document comprises 48 pages 11.15 DIN EN ISO 12759:2015-12 2 A comma is used as the decimal marker. National foreword This document (EN ISO 12759:2015) has been prepared by Technical Committee ISO/TC 117 “Fans” in collaboration with Tech
5、nical Committee CEN/TC 156 “Ventilation for buildings” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was DIN-Normenausschuss Maschinenbau (DIN Standards Committee Mechanical Engineering), Working Committee NA 060-09-11 AA Ventilatoren (SpA ISO/TC 117 und CEN/T
6、C 156/WG 17) of Section Allgemeine Lufttechnik. Representatives of manufacturers and users of air filters, and of research and testing institutes contributed to this standard. Once this standard is cited in the Official Journal of the European Union, it is deemed a “harmonized” standard and thus, a
7、manufacturer applying this standard may assume compliance with the requirements of the Machinery Directive (“presumption of conformity”). The International Standards referred to in Clause 2 and the Bibliography and taken over as European Standards have been published as the corresponding DIN EN ISO
8、Standards with the same number. Where the International Standards and publications referred to are not also DIN ISO Standards with the same number, there are no national standards available. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12759 July 2015 ICS 23.120 English Version Fans - Ef
9、ficiency classification for fans (ISO 12759:2010, including Amd 1:2013) Ventilateurs - Classification du rendement des ventilateurs (ISO 12759:2010, y compris Amd 1:2013) Ventilatoren - Effizienzklassifizierung fr Ventilatoren (ISO 12759:2010, einschlielich Amd 1:2013) This European Standard was app
10、roved by CEN on 16 July 2015. CEN members are bound 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
11、standards may be obtained on application to the CEN-CENELEC 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 a
12、nd notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hung
13、ary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENE
14、LEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12759:2015 EContents Page oreword . 3European f .Introduction.4 1 Scope5 2 Normative references5 3 Terms and definiti
15、ons .5 3.1 Fans General .6 3.2 Fan or test installation categories according to the arrangement of ducting 7 3.3 Fans Definitions relating to calculations7 3.4 Definitions relating to fan efficiency .9 3.5 Fan efficiency grades10 4 Symbols and units.10 5 Fan installation, efficiency and tolerance.11
16、 5.1 General .115.2 Use of installation categories 13 5.3 Calculation of efficiency .13 5.4 Tolerances14 6 Ratings146.1 General .14 6.2 Bare shaft fans.14 6.3 Driven fans .17 Annex A (normative) Energy efficiency grades for bare shaft fans 24 Annex B (normative) Calculation method to determine effic
17、iency of component parts.2 5Annex C (informative) Variation of fan performance between installation categories30 Annex D (informative) Input power calculation for driven fans at design point.31 Annex E (informative) Selection of fans for best efficiency .39 Annex F (informative) Determination of eff
18、iciency grade for a driven fan42 Annex G (informative) Explanatory note 44 Bibliography46 EN ISO 12759:2015 (E) 2 DIN EN ISO 12759:2015-12 European foreword The text of ISO 12759:2010, including Amd 1:2013, has been prepared by Technical Committee ISO/TC 117 “Fans” of the International Organization
19、for Standardization (ISO) and has been taken over as EN ISO 12759:2015 by Technical 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 endo
20、rsement, at the latest by January 2016, and conflicting national standards shall be withdrawn at the latest by January 2016. 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 iden
21、tifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugo
22、slav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 12759:2010, i
23、ncluding Amd 1:2013, has been approved by CEN as EN ISO 12759:2015 without any modification. EN ISO 12759:2015 (E) 3 DIN EN ISO 12759:2015-12 Introduction The last decade has seen not only an escalation in the price, but also an increasing recognition of the finite life of many of the fossil fuels i
24、n use. There is also a belief that climatic change is due to an increase in the levels of carbon dioxide in the atmosphere. This has lead to many nations reviewing methods of energy generation and usage. Therefore, there is a need to promote energy efficiency in order to maintain economic growth. Th
25、is requires better selection of equipment by users and better design of this equipment by manufacturers. Fans of all types are used for ventilation and air conditioning, process engineering (drying, pneumatic conveying), combustion air supply and agriculture, etc. Indeed, the energy usage by fans ha
26、s been calculated as nearly 20 % of worldwide demand. The fan industry is of a global nature, with a considerable degree of exporting and licensing. To ensure that defined fan performance characteristics are common throughout the world, a series of International Standards has been developed. It is t
27、he belief of the industry that there is a need for the recognition of minimum efficiency standards. To encourage their implementation, a classification system is proposed which incorporates a series of efficiency bands. With improvements in technology and manufacturing processes, the minimum efficie
28、ncy levels can be reviewed and increased over time. This International Standard can be used by legislators or regulatory bodies for defining future energy saving targets. EN ISO 12759:2015 (E) 4 DIN EN ISO 12759:2015-12 1 Scope This International Standard establishes a classification of fan efficien
29、cy for all fan types driven by motors with an electrical input power range from 0,125 kW to 500 kW. This International Standard is applicable to bare shaft and driven fans, as well as fans integrated into products. Fans integrated into products are measured as stand-alone fans. This International St
30、andard is not applicable to: a) fans for smoke and emergency smoke extraction; b) fans for industrial processes; c) fans for automotive application, trains and planes; d) fans for potentially explosive atmospheres; e) box fans, powered roof ventilators and air curtains; f) jet fans for use in car pa
31、rks and tunnel ventilation. 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 any amendments) applies
32、. ISO 5801:2007, Industrial fans Performance testing using standardized airways ISO 13348:2007, Industrial fans Tolerances, methods of conversion and technical data presentation ISO 13349:2010, Fans Vocabulary and definitions of categories IEC 60034-2-1, Rotating electrical machines Part 2-1: Standa
33、rd methods for determining losses and efficiency from tests (excluding machines for traction vehicles) IEC 60034-30, Rotating electrical machines Part 30: Efficiency classes of single-speed, three-phase, cage-induction motors 3 Terms and definitions For the purposes of this document, the terms and d
34、efinitions given in ISO 13349 and the following apply. NOTE See, in particular, ISO 13349:2010, Tables 4 and 5, as well as the associated equations in Clause 5 of this International Standard and ISO 5801. EN ISO 12759:2015 (E) 5 DIN EN ISO 12759:2015-12 3.1 Fans General 3.1.1 fan rotary bladed machi
35、ne which receives mechanical energy and utilizes it by means of one or more impellers fitted with blades to maintain a continuous flow of air or other gas passing through it and whose work per unit mass does not normally exceed 25 kJ/kg NOTE 1 Fans are defined according to their installation categor
36、y, function, fluid path and operating conditions. NOTE 2 Adapted from ISO 13349:2010, definition 3.1.1. 3.1.2 fan size maximum impeller tip diameter, D, on which the design of the fan is based 3.1.3 drive transmission and motor/control system device used to power the fan, including motor, mechanical
37、 transmission and motor/control system NOTE 1 Examples of mechanical transmission are belt drive and couplings. NOTE 2 Examples of a motor or control system are variable frequency controller and electronic commutator. 3.1.4 bare shaft fan fan without drives, attachments or accessories (appurtenance)
38、 See Figure 1. NOTE Adapted from ISO 13349:2010, definition 3.1.2. 3.1.5 driven fan one or more impellers fitted to or connected to a motor, with or without a drive mechanism, a housing and a means of variable speed drive See Figure 2. NOTE Adapted from ISO 13349:2010, definition 3.1.3. 3.1.6 air ab
39、breviated term for the expression “air or other gas” ISO 13349:2010, definition 3.2 3.1.7 standard air atmospheric air having a density of exactly 1,2 kg/m3NOTE 1 Atmospheric air at a temperature of 16 C, a pressure of 100 000 Pa and a relative humidity of 65 %, has a density of 1,2 kg/m3, but these
40、 conditions do not form part of the definition. NOTE 2 Adapted from ISO 13349:2010, definition 3.3. EN ISO 12759:2015 (E) 6 DIN EN ISO 12759:2015-12 3.2 Fan or test installation categories according to the arrangement of ducting See Figure 3 and ISO 13349. 3.2.1 installation category A installation
41、with free inlet and free outlet 3.2.2 installation category B installation with free inlet and ducted outlet 3.2.3 installation category C installation with ducted inlet and free outlet 3.2.4 installation category D installation with ducted inlet and ducted outlet 3.3 Fans Definitions relating to ca
42、lculations 3.3.1 average density at fan inlet 1fluid density calculated from the absolute pressure and the static temperature 3.3.2 atmospheric pressure papressure, measured with respect to absolute zero pressure, which is exerted at a point at rest relative to the air around it 3.3.3 fan pressure p
43、fdifference between the stagnation pressure at the fan outlet and the stagnation pressure at the fan inlet 3.3.4 fan static pressure psfconventional quantity defined as the fan pressure minus the fan dynamic pressure at the fan outlet corrected by the Mach factor 3.3.5 absolute stagnation pressure a
44、t a point psgabsolute pressure which would be measured at a point in a flowing gas, if it were brought to rest via an isentropic process 3.3.6 conventional dynamic pressure at a point pdpressure calculated from the velocity and the density of the air at the point EN ISO 12759:2015 (E) 7 DIN EN ISO 1
45、2759:2015-12 3.3.7 fan dynamic pressure at the fan outlet pd2conventional dynamic pressure at the fan outlet calculated from the mass flow rate, the average gas density at the outlet and the outlet area 3.3.8 mass flow rate qmmean value, over time, of the mass of air which passes through the specifi
46、ed airway cross-section per unit of time 3.3.9 inlet volume flow rate qv1mass flow rate at the inlet divided by the corresponding mean value, over time, of the average density at the inlet 3.3.10 fan work per unit mass Wmincrease in mechanical energy per unit mass of fluid passing through the fan 3.
47、3.11 compressibility coefficient kpratio of the mechanical work done by the fan on the air to the work that would be done on an incompressible fluid with the same mass flow, inlet density and pressure ratio 3.3.12 fan air power Puconventional output power which is the product of the mass flow rate a
48、nd the fan work per unit mass, or the product of the inlet volume flow rate, the compressibility coefficient and the fan pressure 3.3.13 fan static air power Pusconventional output power which is the product of the mass flow rate and the fan static work per unit mass, or the product of the inlet vol
49、ume flow rate, the compressibility coefficient and the fan static pressure 3.3.14 impeller power Prmechanical power supplied to the fan impeller NOTE This is applicable to direct driven impellers which are open (as in, for example, a plenum fan) or enclosed in a housing. 3.3.15 nominal motor power PNrated output power of an electric motor 3.3.16 fan shaft power Pamechanical power supplied to the fan shaft EN ISO 12759:2015 (E) 8 DIN EN ISO 12759:2015-12 3.3.17 motor outp
