1、The International Authority on Air System ComponentsAIRMOVEMENTANDCONTROLASSOCIATION INTERNATIONAL, INC.ANSI/AMCAStandard 220-05Laboratory Methods of TestingAir Curtain Units for Aerodynamic Performance RatingAn American National StandardApproved by ANSI on June 7, 2005ANSI/AMCA STANDARD 220-05Labor
2、atory Methods of Testing Air Curtain Unitsfor Aerodynamic Performance RatingAir Movement and Control Association International, Inc.30 West University DriveArlington Heights, IL 60004-1893 2007 by Air Movement and Control Association International, Inc.All rights reserved. Reproduction or translatio
3、n of any part of this work beyond that permitted by Sections 107 and108 of the United States Copyright Act without the permission of the copyright owner is unlawful. Requests forpermission or further information should be addressed to the Executive Director, Air Movement and ControlAssociation Inter
4、national, Inc. at 30 West University Drive, Arlington Heights, IL 60004-1893 U.S.A.AuthorityThis publication was approved by the AMCA International membership on 14 January 2001 and as an AmericanNational Standard by the American National Standards Institute (ANSI) on 7 June 2005. This edition of AN
5、SI/AMCAStandard 220 supersedes AMCA 220-91.AMCA 220 Review CommitteeDavid Johnson, Chair Berner International Corp.James M. Jagers AltonMichael Coscarelli* Berner International Corp.Jack Peters* Loren Cook Co.Vincent Vilarchao Marley Engineered ProductsDennis Neibrook* Marley Engineered ProductsFran
6、k Cuaderno Mars Sales Co., Inc.Steve Rosol* Mars Sales Co., Inc.Ken Lapinski Powered Aire, Inc.Brian K. Jones* Powered Aire, Inc.Paul Saxon AMCA International StaffJoe Brooks AMCA International Staff* Alternate Committee Member* Corresponding Committee MemberDisclaimerAMCA International uses its bes
7、t efforts to produce standards for the benefit of the industry and the public in lightof available information and accepted industry practices. However, AMCA International does not guarantee, certifyor assure the safety or performance of any products, components or systems tested, designed, installe
8、d oroperated in accordance with AMCA International standards or that any tests conducted under its standards will benon-hazardous or free from risk.Objections to AMCA Standards and Certifications ProgramsAir Movement and Control Association International, Inc. will consider and decide all written co
9、mplaints regardingits standards, certified ratings programs or interpretations thereof. For information on procedures for submittingand handling complaints, write to:Air Movement and Control Association International30 West University DriveArlington Heights, IL 60004-1893 U.S.A.orAMCA International,
10、 Incorporatedc/o Federation of Environmental Trade Associations2 Waltham Court, Milley Lane, Hare HatchReading, BerkshireRG10 9TH United Kingdom Related AMCA Standards and PublicationsAMCA Publication 11 Certified Ratings Program - Operating ManualANSI/AMCA Standard 210 Laboratory Methods of Testing
11、 Fans for Aerodynamic Performance RatingAMCA Publication 211 Certified Ratings Program - Air PerformanceOther AMCA ProgramsAMCA Publication 111 Laboratory Accreditation ProgramTABLE OF CONTENTS1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12、. . . . . . . . . . . . . . . . . . . . . .12. Normative References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13. Definitions / Units of Measure / Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13、. . . . . . . . . .13.1 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13.2 Systems of units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14、 . . . . . . .33.3 Symbols and subscripted symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34. Instruments and Methods of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44.1 Air curtain core veloci
15、ty measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44.2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45. Equipment and Setups . . . . . . . . . . .
16、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45.1 Air curtain airflow rate test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45.2 Air velocity projection and outlet air velocity uniformit
17、y test . . . . . . . . . . . . . . . . . . . . . . . . . . . .46. Observation and Conduct of Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46.1 Initial conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18、. . . . . . . . . . . . . . . . . . . . . .46.2 Data to be recorded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47. Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19、. . . . . . . . . . . . . . . . . . .57.1 Average outlet air velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57.2 Outlet air velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20、. . . . . . . . . . . .57.3 Air curtain velocity projection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67.4 Air curtain unit efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、. . .68. Report and Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68.1 Outlet air velocity uniformity test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68.2 Air ve
22、locity projection test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6Annex A. Uncertainty in Velocity Determination Using Pitot-Static Tube and Manometer (Informative) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23、. . . . . .17Annex B. References (Informative) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181Laboratory Methods ofTesting Air Curtain Units forAerodynamic PerformanceRating1. ScopeThe scope of this standard covers the performancetesting of air cu
24、rtain units. The purpose of this standard is to establish uniformmethods for laboratory testing of air curtain units todetermine aerodynamic performance in terms ofairflow rate, outlet air velocity uniformity, powerconsumption, and air velocity projection, for rating orguarantee purposes.It is not t
25、he purpose of this standard to specify thetesting procedures to be used for design, production,or field testing.2. Normative ReferencesThe following standard contains provisions which,through reference in this text, constitute provisions ofthis standard. At the time of publication, the editionindica
26、ted was valid. All standards are subject torevision, and parties to agreements based on thisstandard are encouraged to investigate the possibilityof applying the most recent edition of the standardindicated below.ANSI/AMCA 210-99 Laboratory Methods of TestingFans for Aerodynamic Performance Rating,
27、AirMovement and Control Association International,Inc., Arlington Heights, IL 60004 U.S.A., 1999.3. Definitions / Units of Measure / Symbols3.1 Definitions3.1.1 Air curtain (airstream). A directionally-controlled airstream, moving across the entire heightand width of an opening, which reduces theinf
28、iltration or transfer of air from one side of theopening to the other and/or inhibits insects, dust ordebris from passing through. For the purposes of thisstandard, “air curtain” and “airstream” aresynonymous.3.1.2 Air curtain depth. The airstream dimensionperpendicular to both the direction of airf
29、low and theairstream width; the short dimension of the airstream.3.1.3 Air curtain width. The airstream dimensionperpendicular to both the direction of airflow and theairstream depth; the long dimension of the airstream.3.1.4 Air curtain unit (ACU). An air moving devicewhich produces an air curtain.
30、3.1.5 Air discharge nozzle. A component or anassembly, which may include adjustable vanes, in the ACU which directs and controls the airstream.3.1.6 Air discharge nozzle depth (Nd). The insidedimension perpendicular to both the direction ofairflow and the airstream width.3.1.7 Air discharge nozzle w
31、idth (Nw). The insidedimension perpendicular to both the direction ofairflow and the nozzle depth.3.1.8 Air discharge angle (). The angle betweenthe plane of the protected opening and the directionin which the air curtain leaves the discharge.3.1.9 Psychrometrics (from ANSI/AMCA 210)3.1.9.1 Dry-bulb
32、 temperature (td). The airtemperature measured by a dry temperature sensor.3.1.9.2 Wet-bulb temperature (tw). The temperaturemeasured by a temperature sensor covered by awater-moistened wick and exposed to air in motion.When properly measured, it is a close approximationof the temperature of adiabat
33、ic saturation.3.1.9.3 Wet-bulb depression. The differencebetween the dry-bulb and wet-bulb temperatures atthe same location.3.1.9.4 Stagnation (total) temperature. Stagnation(total) temperature is the temperature which exists byvirtue of the internal and kinetic energy of the air. Ifthe air is at re
34、st, the total temperature will equal thestatic temperature.3.1.9.5 Static temperature. Static temperature isthe temperature which exists by virtue of the internalenergy of the air only. If a portion of the internalenergy is converted into kinetic energy, the statictemperature will be decreased accor
35、dingly.AMCA INTERNATIONAL, INC. ANSI/AMCA 220-0523.1.9.6 Air density (). Air density is the mass perunit volume of the air.3.1.9.7 Standard air. Air with a density of 1.2 kg/m3(0.075 lbm/ft3), a ratio of specific heats of 1.4, aviscosity of 1.8185 10-05Pas (1.222 10-05lbm/fts).Air at 20 C (68 F) tem
36、perature, 50% relativehumidity, and 101.3207 kPa (29.92 in. Hg) barometricpressure has these properties, approximately.3.1.10 Pressure and head3.1.10.1 Pressure. Force per unit area.3.1.10.2 Absolute pressure. The value of apressure when the datum pressure is absolute zero.It is always positive.3.1.
37、10.3 Barometric pressure (pb). The absolutepressure exerted by the atmosphere.3.1.10.4 Gauge pressure. The value of a pressurewhen the datum pressure is the barometric pressureat the point of measurement. It may be positive ornegative.3.1.10.5 Velocity pressure (Pv). The portion of theair pressure w
38、hich exists by virtue of the rate ofmotion only. It is always positive.3.1.10.6 Static pressure. That portion of the airpressure which exists by virtue of the degree ofcompression only. If expressed as gauge pressure, itmay be positive or negative.3.1.10.7 Total pressure. The air pressure whichexist
39、s by virtue of the degree of compression and therate of motion. It is the algebraic sum of the velocitypressure and the static pressure at a point. Thus, ifthe air is at rest, the total pressure will equal the staticpressure.3.1.10.8 Pressure loss. The decrease in totalpressure due to friction and t
40、urbulence.3.1.11 Air curtain unit performance variables3.1.11.1 Unit airflow rate (volume) (Q). The airflowvolume which leaves the discharge nozzle, atstandard air conditions, as measured in accordancewith ANSI/AMCA 210, and reported in m3/s (cfm).3.1.11.2 Average outlet air velocity (Va). Theairflo
41、w rate produced by the air curtain unit divided bythe cross sectional area of the discharge nozzleplane at free-air delivery. Refer to Section 7.1 forcalculation of the value.3.1.11.3 Outlet air velocity uniformity (U). Anindicator of the consistency of air velocities acrossthe air curtain width, ex
42、pressed as a percentage.Refer to Section 7.2.4 for calculation of the value.3.1.11.4 Air curtain core velocity (Vcx). Themaximum air velocity of the air curtain at point X asmeasured across both the air curtain depth and widthat specified distances from the discharge nozzle, perSection 7.2.1.3.1.11.
43、5 Air curtain average core velocity (Vca).An average of air curtain core velocities measuredalong the air curtain width, at specified distances perSection 7.2.3.3.1.11.6 Air curtain velocity projection. A set ofaverage air curtain core velocities measured alongthe air curtain width at distances spec
44、ified in Section6.2.4.4.3.1.11.7 Power rating of the air curtain unit (W).The amount of energy, expressed in kW, consumedby the drive motor(s) of the air curtain unit at free-airdelivery. 3.1.11.8 Air curtain unit efficiency (ac). The ratioof the ACU air power to the power rating of the ACU.This val
45、ue is based upon total fan efficiency given inANSI/AMCA 210.3.1.11.9 Air curtain unit target distance. A distanceperpendicular to the discharge nozzle depth inmeters (feet), determined by the sponsor of the test,for the purpose of setting up the test.3.1.11.10 Air power. The useful power delivered t
46、othe air. This is proportional to the product of the ACUairflow rate and total pressure.3.1.12 Miscellaneous3.1.12.1 Point of operation. The relative position onthe air curtain performance curve corresponding to aparticular airflow rate, pressure, power and efficiency.3.1.12.2 Free-air delivery. Fre
47、e-air delivery is thatpoint of operation where the air curtain unit operatesagainst zero static pressure.3.1.12.3 Determination. A determination is acomplete set of measurements for a particular pointof operation for the parameter being determined.3.1.12.4 Test. A series of determinations of various
48、characteristics at a single point of operation of an aircurtain unit.ANSI/AMCA 220-0533.2 System of unitsSI units (The International System of Units - LeSystme International dUnits) 1 are the primaryunits employed in this standard, with I-P units givenas the secondary reference. SI units are based o
49、nthe fundamental values of the International Bureau ofWeights and Measures 1, and I-P values are basedon the values of the National Institute of Standardsand Technology that are, in turn, based upon thevalues of the International Bureau.3.2.1 Basic units. The unit of length is the meter (m)or millimeter (mm); I-P units are the foot (ft) or inch(in.). The unit of mass is the kilogram (kg); the I-Punit is the pound-mass (lbm). The unit of time is eitherthe minute (min) or the second (s). The unit oftemperature is either the Kelvin (K) or the degreeCelsius (C); I-P units are
