DIN EN 16445-2013 Ventilation for buildings - Air diffusion - Aerodynamic testing and rating for mixed flow application non-isothermal procedure for cold jet German version EN 1644.pdf

1、May 2013 Translation by DIN-Sprachendienst.English price group 12No 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 91

2、.140.30!%#r“2008879www.din.deDDIN EN 16445Ventilation for buildings Air diffusion Aerodynamic testing and rating for mixed flow application:non-isothermal procedure for cold jet;English version EN 16445:2013,English translation of DIN EN 16445:2013-05Lftung von Gebuden Luftverteilung Aerodynamische

3、Prfung und Bewertung von Mischstromanwendungen: Nicht-isothermesVerfahren fr einen Kaltluftstrahl;Englische Fassung EN 16445:2013,Englische bersetzung von DIN EN 16445:2013-05Ventilation des btiments Bouches dair Essais arodynamiques et talonnage pour applications de fluides mixtes pour les essaisno

4、n-isothermes pour jet froid;Version anglaise EN 16445:2013,Traduction anglaise de DIN EN 16445:2013-05www.beuth.deDocument comprises 23 pagesIn case of doubt, the German-language original shall be considered authoritative.04.13DIN EN 16445:2013-05 2 A comma is used as the decimal marker. National fo

5、reword This document (EN 16445:2013) has been prepared by Technical Committee CEN/TC 156 “Ventilation for buildings” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Heiz- und Raumlufttechnik (Heating and Ventilation Technology Stand

6、ards Committee), Working Committee NA 041-02-52 AA Komponenten. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 5167-1 DIN EN ISO 5167-1 ISO 5167-2 DIN EN ISO 5167-2 ISO 5167-3 DIN EN ISO 5167-3 ISO 5167-4 DIN EN ISO 5167-4 ISO 7726 DIN

7、 EN ISO 7726 National Annex NA (informative) Bibliography DIN EN ISO 5167-1, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements DIN EN ISO 5167-2, Measurement of fluid flow by means

8、of pressure differential devices inserted in circular cross-section conduits running full Part 2: Orifice plates DIN EN ISO 5167-3, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 3: Nozzles and Venturi nozzles DIN EN

9、ISO 5167-4, Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 4: Venturi tubes DIN EN ISO 7726, Ergonomics of the thermal environment Instruments for measuring physical quantities EUROPEAN STANDARD NORME EUROPENNE EUROPI

10、SCHE NORM EN 16445 February 2013 ICS 91.140.30 English Version Ventilation for buildings - Air diffusion - Aerodynamic testing and rating for mixed flow application: non-isothermal procedure for cold jet Ventilation des btiments - Bouches dair - Essais arodynamiques et talonnage pour applications de

11、 fluides mixtes pour les essais non-isothermes pour jet froid Lftung von Gebuden - Luftverteilung - Aerodynamische Prfung und Bewertung von Mischstromanwendungen: Nicht-isothermes Verfahren fr einen Kaltluftstrahl This European Standard was approved by CEN on 8 December 2012. CEN members are bound t

12、o 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 CEN-C

13、ENELEC 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-CENELEC Management Centre has

14、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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxe

15、mbourg, 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 Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN

16、 All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16445:2013: EEN 16445:2013 (E) 2 Contents Page Foreword . 3 1 Scope 4 2 Normative references . 4 3 Terms and definitions 4 4 Symbols (and abbreviated terms) . 6 5 Requirements . 7 5.1 In

17、strumentation 7 5.1.1 Air flow rate measurement . 7 5.1.2 Temperature measurements 7 5.1.3 Velocity measurements . 7 5.2 Test room and conditions 7 5.3 ATD isothermal characteristics . 7 6 Test to measure the non isothermal air discharge characteristics of a supply ATD 8 6.1 Installation of ATD 8 6.

18、2 Test procedure for horizontal cold jet . 10 6.2.1 Test conditions . 10 6.2.2 Preliminary conditions prior to formal measurement . 10 6.2.3 Measurements 11 7 Report . 19 7.1 Test conditions . 19 7.2 Results 19 Bibliography 21 DIN EN 16445:2013-05 EN 16445:2013 (E) 3 Foreword This document (EN 16445

19、:2013) has been prepared 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 endorsement, at the latest by August 2013, and co

20、nflicting national standards shall be withdrawn at the latest by August 2013. 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 identifying any or all such patent rights. Accordin

21、g to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Gr

22、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16445:2013-05 EN 16445:2013 (E) 4 1 Scope This European Standard specifies methods for t

23、he laboratory aerodynamic testing and rating of air terminal devices for mixed flow applications, including the specification of suitable test facilities and measurement techniques. This standard applies to laboratory testing of ATD for technical characterisation. The standard gives only tests for t

24、he assessment of characteristics of the air terminal devices for mixed flow applications, under non-isothermal conditions with a cold jet. It does not cover the testing of isothermal or low velocity terminal devices which are covered by other published standards. This European Standard applies to ve

25、ntilation or air conditioning systems designed for the maintenance of comfort conditions for buildings. It is not applicable in the case of systems for the control of industrial or other special process environments. In the latter case however, it may be referred to if the system technology is simil

26、ar to that of the above mentioned ventilation and air conditioning systems. The principles described in this European Standard can also be used on site or in a lab for full-scale measurements. 2 Normative references The following documents, in whole or in part, are normatively referenced in this doc

27、ument and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12238, Ventilation for buildings Air terminal devices Aerodynamic testing and rating for

28、 mixed flow application EN 12239, Ventilation for buildings Air terminal devices Aerodynamic testing and rating for displacement flow applications EN 13182, Ventilation for buildings Instrumentation requirements for air velocity measurements in ventilated spaces 3 Terms and definitions For the purpo

29、ses of this document, the following terms and definitions apply: 3.1 supply air air entering a supply air terminal device from an upstream duct 3.2 exhaust air air leaving an exhaust air terminal device into a downstream duct 3.3 local measured mean air velocity measured value of local airstream vel

30、ocity as described in EN 12238 3.4 treated space enclosure served by an air distribution system; in this standard this is the test room DIN EN 16445:2013-05 EN 16445:2013 (E) 5 3.5 envelope geometrical surface in a treated space where the local measured air velocity has the same value and is the ref

31、erence velocity (generally 0,5 m/s) associated with this envelope 3.6 throw (for a supply air terminal device) maximum distance between the centre of the core and a plane which is tangent to a specified envelope, such as 0,25 m.s-1, 0,5 m.s-1, etc. and the centre of the ATD 3.7 drop (for a supply ai

32、r terminal device) vertical distance between the lowest horizontal plane tangent to a specified envelope, such as 0,25 m.s-1, 0,5 m.s-1, etc., and the centre of the ATD 3.8 rise (for a supply air terminal device) vertical distance between the highest horizontal plane tangent to a specified envelope,

33、 such as 0,25 m.s-1, 0,5 m.s-1,etc., and the centre of the ATD 3.9 spread (for a supply air terminal device) maximum distance between two vertical planes tangent to a specified envelope, such as 0,25 m.s-1, 0,5 m.s-1, etc., and perpendicular to a plane through the centre of the ATD Note 1 to entry:

34、There may be two different spreads, not always equal: One for the left side, the other for the right side (considered when looking at the treated space from the supply air terminal device). 3.10 distance to maximum spread distance from the centre of the ATD to the maximum spread determined 3.11 sepa

35、ration distance for cold jet with Coanda effect on ceiling, distance between the centre of the ATD and the point where the jet separates from the ceiling to drop 3.12 supply temperature temperature of air in supply ATD 3.13 room air temperature arithmetical average value of room air temperature meas

36、ured in the occupied zone outside the envelope of the jet 3.14 temperature quotient ratio of the local temperature difference at point x and at the point of discharge Q= x / 0where 0is the temperature difference between supply and room air xis the temperature difference between the point of maximum

37、velocity in the distance x from the ATD and room air DIN EN 16445:2013-05 EN 16445:2013 (E) 6 3.15 free area Afsum of the minimum measured areas at each opening in the ATD through which air can pass 3.16 effective area Akeffective area in the ATD measured as described in EN 12238 3.17 effective velo

38、city vkeffective velocity in the ATD measured as described in EN 12238 4 Symbols (and abbreviated terms) Symbol h h1h2 Quantity Distances from ceiling at which measurements are made on vertical sections SI unit m p Pressure difference (for a pressure difference device) Pa qvVolume rate of flow m3.s-

39、1v Velocity m.s-1vxMaximum mean velocity at distance x from centre of supply air terminal device m.s-1x Distance from supply ATD along the centreline of the jet m xsSeparation distance m X Throw m Y Spread m Z Drop m QTemperature quotient 0Temperature difference between supply and room air K xTemper

40、ature difference between the point of maximum velocity in the distance x from the ATD and room air K Density of air kg.m-3AfFree area of the ATD m2AkEffective area of the ATD (k factor area) m2Ad bR hRlRArea corresponding to the cross section of the nominal size of the duct to which the device is fi

41、tted (neck area) Test room width (Figure 1) Test room height (Figure 1) Test room length (Figure 1) m2 m m m R Area parameter that relates to the effective size of the ATD (see EN 12238) m2S Linear parameter that relates to the effective size of the ATD (see EN 12238) m vkEffective velocity in the A

42、TD vkqAm.s-1DIN EN 16445:2013-05 EN 16445:2013 (E) 7 5 Requirements 5.1 Instrumentation 5.1.1 Air flow rate measurement The air flow rate shall be measured according to one of the standards quoted in Clause 2 with maximum uncertainty of 5 %. 5.1.2 Temperature measurements Measurements of temperature

43、s (in room and in jet) shall be made by means of resistance thermometers, thermocouples or other suitable instruments as long as they are calibrated with an accuracy better than 0,25 K. The objective is to achieve a global accuracy better than 0,5 K. The measurement of temperature in jet may involve

44、 exploration in areas with gradients and this may place restrictions on the size of the sensing head. In addition, when temperature and velocity measurements are done together, the temperature sensor shall be as close as possible to the correct location in jet with a minimum perturbation of the velo

45、city measurement. A minimum measuring period of 60 s is recommended. When temperature fluctuations with low frequency occur, this may be due to air stream major instability which can be determined by jet flow visualisation (e.g. using smoke). If this is the case, these results shall be reported. If

46、the air stream appears stable, increase the measuring period to provide a stable temperature reading. 5.1.3 Velocity measurements The measurements of low velocities within treated spaces to determine air terminal device performance characteristics shall be made with a measuring device in accordance

47、with EN 13182. 5.2 Test room and conditions The test room (size, walls, equipment) shall be as described in EN 12238. If heating elements are necessary, they shall be distributed uniformly over the floor area and covered by the floor. The surface temperature of the floor should not exceed the room a

48、ir temperature by more than 4 K. The temperature of all other walls shall not differ from the air temperature of the test room by more than 1 K unless there are special requirements associated with full scale/mock up testing (e.g. solar gain through a window). In any case, the sum of all room heat l

49、oads shall be equal to the cooling capacity of supply air to match the steady state conditions described in 6.2.2. Where high cooling performance is required (high 0), it might not be possible to achieve this with heat loads only on the floor. If this is the case, point heat sources may be used and shall be equally distributed over the test room floor. The details and locations of such heat loads shall be reported When used for mock-up testing, representation of actual specified heat loads shall be