1、 Reference number ISO 27327-1:2009(E) ISO 2009INTERNATIONAL STANDARD ISO 27327-1 First edition 2009-06-15 Fans Air curtain units Part 1: Laboratory methods of testing for aerodynamic performance rating Ventilateurs Rideaux dair Partie 1: Mthodes dessai en laboratoire des caractristiques de performan
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5、t at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2009 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 fr
6、om either 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 2009 All rights reservedISO 27327-1:2009
7、(E) ISO 2009 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms, definitions and symbols 1 3.1 Terms and definitions. 1 3.2 Symbols . 6 4 Air curtain airflow rate test 8 4.1 Apparatus and instruments . 8 4.2 Preparation of air curtain airf
8、low rate test . 8 4.3 Test procedure 8 4.4 Calculation. 9 4.5 Test report . 11 5 Outlet air velocity uniformity test 11 5.1 Apparatus and instruments . 11 5.2 Air velocity projection and outlet air velocity uniformity test 12 5.3 Test procedure 12 5.4 Calculation. 13 5.5 Test report . 14 6 Air curta
9、in velocity projection test 14 6.1 Apparatus and instruments . 14 6.2 Equipment and organization . 14 6.3 Test procedure 15 6.4 Calculation. 16 6.5 Test report . 16 7 Illustration of tests 17 Annex A (normative) Uncertainty in velocity determination using Pitot-static tube and manometer. 28 Bibliogr
10、aphy . 29 ISO 27327-1:2009(E) iv ISO 2009 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 Standards is normally carried out through ISO technical commi
11、ttees. 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 take part in the work. ISO collaborates closely with the I
12、nternational 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 is to prepare International Standards. Draft Internationa
13、l 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 possibility that some of the elements of this document may be the
14、 subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 27327-1 was prepared by Technical Committee ISO/TC 117, Fans. ISO 27327 consists of the following parts, under the general title Fans Air curtain units: Part 1: Laboratory methods of testi
15、ng for aerodynamic performance rating ISO 27327-1:2009(E) ISO 2009 All rights reserved v Introduction This part of ISO 27327 is the first developed by ISO/TC 117 and is intended to determine the aerodynamic performance rating of an air curtain. The principal aerodynamic attributes determined by this
16、 part of ISO 27327 are airflow rate, power consumption, velocity uniformity near the exit plane and average air curtain core velocities at specified distances from the exit plane. While a fan energy efficiency calculation is included in this part of ISO 27327, it is generally recognized by the devel
17、opers of this part of ISO 27327 that a different measure of energy effectiveness is more important and meaningful than fan efficiency because the energy savings that can be obtained by a properly selected, installed and controlled air curtain are significantly higher than the energy needed to drive
18、the motor(s) of an air curtain. This part of ISO 27327 is developed with the understanding that another test standard can be developed at a later stage, which can define a test method for energy effectiveness. This part of ISO 27327 is not intended as an in situ test International Standard and neith
19、er is it applicable to thermodynamic performance. INTERNATIONAL STANDARD ISO 27327-1:2009(E) ISO 2009 All rights reserved 1 Fans Air curtain units Part 1: Laboratory methods of testing for aerodynamic performance rating 1 Scope This part of ISO 27327 establishes uniform methods for laboratory testin
20、g of air curtain units to determine aerodynamic performance in terms of airflow rate, outlet air velocity uniformity, power consumption and air velocity projection, for rating or guarantee purposes. This part of ISO 27327 is not applicable to the specification of test procedures to be used for desig
21、n, production or field testing. 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) app
22、lies. ISO 5801:2007, Industrial fans Performance testing using standardized airways 3 Terms, definitions and symbols For the purposes of this document, the following terms and definitions apply. 3.1 Terms and definitions 3.1.1 air curtain airstream directionally-controlled airstream, moving across t
23、he entire height and width of an opening, which can reduce the infiltration or transfer of air from one side of the opening to the other and/or inhibit the passage of insects, dust and debris 3.1.2 air curtain depth airstream dimension perpendicular to both the direction of airflow and the airstream
24、 width NOTE This is the short dimension of the airstream. 3.1.3 air curtain width airstream dimension perpendicular to both the direction of airflow and the airstream depth NOTE This is the long dimension of the airstream. ISO 27327-1:2009(E) 2 ISO 2009 All rights reserved3.1.4 air curtain unit ACU
25、air-moving device which produces an air curtain 3.1.5 air discharge nozzle component or an assembly in the ACU which directs and controls the airstream NOTE This may include adjustable vanes. 3.1.6 air discharge nozzle depth h n inside dimension perpendicular to both the direction of airflow and the
26、 airstream width NOTE This depth is expressed in millimetres. 3.1.7 air discharge nozzle width b n inside dimension perpendicular to both the direction of airflow and the nozzle depth NOTE This width is expressed in millimetres. 3.1.8 air discharge angle angle between the plane of the protected open
27、ing and the direction in which the air curtain leaves the discharge 3.1.9 dry-bulb temperature T dair temperature measured by a dry temperature sensor in the test enclosure, near the ACU inlet or airway inlet NOTE This temperature is expressed in degrees Celsius. 3.1.10 wet-bulb temperature T wair t
28、emperature measured by a temperature sensor covered by a water-moistened wick and exposed to air in motion NOTE 1 When properly measured, it is a close approximation to the temperature of adiabatic saturation. NOTE 2 This temperature is expressed in degrees Celsius. 3.1.11 air density amass per unit
29、 volume of air NOTE Air density is expressed in kilograms per cubic metre. 3.1.12 pressure force per unit area ISO 27327-1:2009(E) ISO 2009 All rights reserved 3 3.1.13 absolute pressure p value of a pressure when the datum pressure is absolute zero NOTE This is always positive. 3.1.14 atmospheric p
30、ressure p aabsolute pressure of the free atmosphere at the mean altitude of the ACU NOTE This pressure is normally expressed in pascals. 3.1.15 gauge pressure p evalue of the pressure when the datum pressure is the atmospheric pressure at the point of measurement NOTE 1 Gauge pressure can be negativ
31、e or positive. NOTE 2 Gauge pressure is determined using Equation (1): ea ppp = (1) NOTE 3 This pressure is normally expressed in pascals. 3.1.16 dynamic pressure at a point p dpressure calculated from the velocity and the density, a , of the air at a point NOTE 1 The point is determined using Equat
32、ion (2): 2 da 2 v p = (2) NOTE 2 This pressure is normally expressed in pascals. 3.1.17 gauge stagnation pressure at a point p esgdifference between the absolute stagnation pressure, p sg , and the atmospheric pressure, p aNOTE 1 This pressure is calculated using Equation (3): p esg= p sg p a(3) NOT
33、E 2 This pressure is normally expressed in pascals. ISO 27327-1:2009(E) 4 ISO 2009 All rights reserved3.1.18 ACU airflow rate q airflow volume which leaves the discharge nozzle, at standard air conditions, as measured in accordance with ISO 5801 NOTE 1 This is given by Equation (4): q = q Vsg1(4) NO
34、TE 2 This rate is expressed in cubic metres per second. 3.1.19 inlet stagnation volume flow rate q Vsg1mass flow rate divided by the inlet stagnation density NOTE 1 This is determined using Equation (5): m Vsg1 sg1 q q = (5) NOTE 2 Inlet stagnation volume flow rate is expressed in cubic metres per s
35、econd. 3.1.20 ACU pressure p ACUdifference between the stagnation pressure at the ACU outlet and the stagnation pressure at the ACU inlet NOTE 1 This is determined using Equation (6): p ACU= p sg2 p sg1 (6) NOTE 2 When the Mach number is less than 0,15, it is possible to use the relationship given i
36、n Equation (7): p ACU= p t2 p t1(7) NOTE 3 ACU pressure is expressed in pascals. 3.1.21 ACU static pressure p sACUconventional quantity defined as the ACU pressure minus the ACU dynamic pressure corrected by the Mach factor NOTE 1 This is determined using Equation (8): p sACU= p sg1(8) NOTE 2 ACU st
37、atic pressure is expressed in pascals. 3.1.22 average outlet air velocity aairflow rate produced by the ACU divided by the cross-sectional area of the discharge nozzle plane at free-air delivery NOTE See 4.4.3 for calculation of the value. ISO 27327-1:2009(E) ISO 2009 All rights reserved 5 3.1.23 ou
38、tlet air velocity uniformity u ACUindicator of the consistency of air velocities across the air curtain width NOTE 1 See 5.4.4 for calculation of the value. See Figure 7. NOTE 2 The outlet air velocity uniformity is expressed as a percentage. 3.1.24 air curtain core velocity cxmaximum air velocity o
39、f the air curtain at point x as measured across both the air curtain depth and width at specified distances from the discharge nozzle NOTE See 5.1.1 and 5.3.4. 3.1.25 air curtain average core velocity caaverage of air curtain core velocities measured along the air curtain width at specified distance
40、s from the discharge nozzle NOTE See 6.4.3. 3.1.26 air curtain velocity projection set of average air curtain core velocities measured along the air curtain width at specified distances from the discharge nozzle NOTE 1 See 6.3.2.5. NOTE 2 Velocity is expressed in metres per second. 3.1.27 motor inpu
41、t power P eelectrical power supplied at the terminals of an electric motor drive NOTE Motor input power is expressed in watts. 3.1.28 ACU energy effectiveness E ACUratio described by the difference in energy loss through an opening without and with the use of an air curtain divided by the energy los
42、s without the air curtain NOTE The energy loss with the use of the air curtain includes the energy consumption of the air curtain 3.1.29 ACU fan efficiency fanratio of the air power of the ACU to the motor input power of the ACU ISO 27327-1:2009(E) 6 ISO 2009 All rights reserved3.1.30 ACU target dis
43、tance l tdistance perpendicular to the discharge nozzle depth in metres, determined by the sponsor of the test, for the purpose of setting up the test 3.1.31 air power of ACU P ACUconventional output power which is the product of the inlet volume flow rate, q Vsg1 , and the ACU pressure, p ACUNOTE 1
44、 This is determined using Equation (9): P ACU = q Vsg1 p ACU(9) NOTE 2 The air power of the ACU is expressed in watts when q Vsg1is in cubic metres per second and p ACUis in pascals. 3.1.32 point of operation relative position on the air curtain performance curve corresponding to a particular airflo
45、w rate, pressure, power and efficiency 3.1.33 free-air delivery that point of operation where the ACU operates against zero static pressure 3.1.34 determination complete set of measurements for a particular point of operation for the parameter being determined 3.1.35 test series of determinations of
46、 various characteristics at a single point of operation of an ACU 3.2 Symbols Symbol Term Unit A nNozzle cross-sectional area m 2 b nAir discharge nozzle width mm C dThe calculated test line spacing mm E ACUACU energy effectiveness 1 h n air discharge nozzle depth mm l t ACU target distance m fanACU
47、 fan efficiency per unit n Number of data points 1 ISO 27327-1:2009(E) ISO 2009 All rights reserved 7 N ACU speed (rotational) r/min p Absolute pressure Pa p aAtmospheric pressure Pa p ACUACU pressure Pa p dDynamic pressure at a point Pa p e Gauge pressure Pa p esgGauge stagnation pressure at a poin
48、t Pa p sgAbsolute stagnation pressure Pa p sg1Stagnation pressure at the ACU inlet Pa p sg2Stagnation pressure at the ACU outlet Pa p sACUACU static pressure Pa P eMotor input power W P ACUAir power of ACU W q ACU airflow rate m 3 /s q mMass flow rate kg/s q Vsg1Inlet stagnation volume flow rate m 3
49、 /s aAir density kg/m 3 sg1 Inlet stagnation densitykg/m 3s Standard deviation 1 Air discharge angle degrees T dDry-bulb temperature C T wWet-bulb temperature C u ACUOutlet air velocity uniformity % Velocity m/s aVelocity, average outlet m/s caVelocity, average (air curtain core) m/s cxVelocity, air curtain core, at section x m/s ISO 27327-1:2009(E) 8 ISO 2009 All rights reserved4 Air curtain airflow rate test 4.1 Apparatus and instruments 4.1.1 General Instrume
