ASHRAE 130-2008 Methods of Testing Air Terminal Units《航空集散站装置的测试方法》.pdf

1、ASHRAE STANDARDAmerican Society of Heating, Refrigeratingand Air-Conditioning Engineers, Inc.1791 Tullie Circle NE, Atlanta, GA 30329www.ashrae.orgMethods of TestingAir Terminal UnitsANSI/ASHRAE Standard 130-2008(Supersedes ANSI/ASHRAE Standard 130-1996 RA 06)Approved by the ASHRAE Standards Committ

2、ee on January 19, 2008; by the ASHRAE Board of Directors onJanuary 23, 2008; and by the American National Standards Institute on February 27, 2008.ASHRAE Standards are scheduled to be updated on a five-year cycle; the date following the standard number isthe year of ASHRAE Board of Directors approva

3、l. The latest copies may be purchased from ASHRAE CustomerService, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail: ordersashrae.org. Fax: 404-321-5478. Tele-phone: 404-636-8400 (worldwide) or toll free 1-800-527-4723 (for orders in US and Canada). Copyright 2008 ASHRAE, Inc.ISSN 1041-2336www

4、.ansi.orgASHRAE STANDARDS COMMITTEE 20072008Stephen D. Kennedy, ChairHugh F. Crowther, Vice-ChairRobert G. BakerMichael F. BedaDonald L. BrandtSteven T. BushbyPaul W. CabotKenneth W. CooperSamuel D. Cummings, Jr.K. William DeanRobert G. DoerrRoger L. HedrickEli P. Howard, IIIFrank E. JakobNadar R. J

5、ayaramanByron W. JonesJay A. KohlerJames D. LutzCarol E. MarriottR. Michael MartinMerle F. McBrideFrank MyersH. Michael NewmanLawrence J. SchoenBodh R. SubherwalJerry W. White, Jr.Bjarne W. Olesen, BOD ExOLynn G. Bellenger, COClaire B. Ramspeck, Assistant Director of Technology for Standards and Spe

6、cial ProjectsSPECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus standard developed under the auspices of the American Society ofHeating, Refrigerating and Air-Conditioning Engineers (ASHRAE). Consensus is defined by the American National Standards Institute (ANSI), o

7、f whichASHRAE is a member and which has approved this standard as an ANS, as “substantial agreement reached by directly and materially affected interestcategories. This signifies the concurrence of more than a simple majority, but not necessarily unanimity. Consensus requires that all views and obje

8、ctionsbe considered, and that an effort be made toward their resolution.” Compliance with this standard is voluntary until and unless a legal jurisdiction makescompliance mandatory through legislation.ASHRAE obtains consensus through participation of its national and international members, associate

9、d societies, and public review.ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The Project CommitteeChair and Vice-Chair must be members of ASHRAE; while other committee members may or may not be ASHRAE members, all must be technic

10、allyqualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all Project Committees. The Assistant Director of Technology for Standards and Special Projects of ASHRAE should be contacted for:a. interpretation of the contents of this Standard,b. partic

11、ipation in the next review of the Standard,c. offering constructive criticism for improving the Standard, ord. permission to reprint portions of the Standard.DISCLAIMERASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of available information

12、andaccepted industry practices. However, ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components,or systems tested, installed, or operated in accordance with ASHRAEs Standards or Guidelines or that any tests conducted under itsStandards or Guidelines will

13、be nonhazardous or free from risk.ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDSASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for ratingpurposes, by suggesting safe practices in designing and installing equipment, by prov

14、iding proper definitions of this equipment, and by providingother information that may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them,and conformance to them is completely voluntary.In referring to this Standard or Guideline and in mar

15、king of equipment and in advertising, no claim shall be made, either stated or implied,that the product has been approved by ASHRAE.ASHRAE Standard Project Committee 130Cognizant TCs: TC 5.3, Room Air Distribution, and TC 9.1, Large Building Air-Conditioning SystemsSPLS Liaison: Carol E. Marriott*De

16、notes members of voting status when the document was approved for publication.Jerry M. Sipes, Chair* Frederick A. Lorch*James Dale Aswegan* Gregory L. Meeuwsen*Jason P. Bobruk Roger Gaylon Richardson*Ted N. Carnes* Julian RochesterAlfred T. Dyck Jeffery R. Stein*Eugene W. Faris* Jack L. StegallCharl

17、es D. Kieffer* Ronald E. Woodbury*Marvin L. Kloostra Michael W. Woodford*David James LingreyCONTENTSANSI/ASHRAE Standard 130-2008Methods of Testing Air Terminal UnitsSECTION PAGEForeword. 21 Purpose 22 Scope . 23 Definitions and Symbols . 24 Instrumentation and Facilities. 45 Test Methods 66 Modulat

18、ing Diffuser Terminal Testing 137 References . 13Informative Appendix A: Means of Airflow Rate Measurement 13Informative Appendix B: Example for Measurement of Pressure-Control Performance 16Informative Appendix C: Examples for Measurement of Mixing Efficiency 17Informative Appendix D: Illustrations

19、 of Acoustically Isolated Ducts 18NOTEWhen addenda, interpretations, or errata to this standard have been approved, they can be downloaded free of charge from the ASHRAE Web site at http:/www.ashrae.org. Copyright 2008 American Society of Heating,Refrigerating and Air-Conditioning Engineers, Inc.179

20、1 Tullie Circle NEAtlanta, GA 30329www.ashrae.orgAll rights reserved.2 ANSI/ASHRAE Standard 130-2008(This foreword is not part of this standard. It is merelyinformative and does not contain requirements necessaryfor conformance to the standard. It has not beenprocessed according to the ANSI requirem

21、ents for astandard and may contain material that has not beensubject to public review or a consensus process.Unresolved objectors on informative material are notoffered the right to appeal at ASHRAE or ANSI.)FOREWORDFirst published in 1996 and reaffirmed in 2006, Standard130 specifies instrumentatio

22、n and facilities, test installationmethods, and procedures for determining the capacity andrelated performance of constant-volume and variable-volumeair terminal units. The standard is classified as an ASHRAEstandard method of measurement.This revision of the standard includes updates and revi-sions

23、 to all parts of the standard, including its title, purpose,and scope. It updates definitions, adds modulating diffusers,redefines airflow sensor performance testing, and adds amethod to determine the power factor. New appendices con-tain some material that was formerly in the body of the stan-dard

24、and some new reference material. This standard is required for compliance with ARI Stan-dard 880.The project committee wishes to acknowledge Dan Int-Hout, Kerstin Kenty, Patrick Schoof, and Jim Kline for theassistance they provided in revising this standard. 1. PURPOSEThis standard specifies instrum

25、entation and facilities, testinstallation methods, and procedures for measuring the capac-ity and related performance of constant-volume, variable-volume, and modulating integral diffuser air terminals.2. SCOPE2.1 The methods of test in this standard apply to air controldevices used in air distribut

26、ion systems. These devices pro-vide control of air volume with or without temperature controlby one or more of the following means, and may or may notinclude a fan:a. Fixed or adjustable directional vanes (i.e., bypass terminals)b. Pressure-dependent volume dampers or valves (includingair induction

27、nozzles and dampers)c. Pressure-compensated volume dampers or valves (includ-ing air induction nozzles and dampers)d. Integral heat exchangee. ON/OFF fan controlf. Variable-speed fan controlg. Modulating integral diffuser terminals2.2 This standard covers test methods for use in determiningthe follo

28、wing performance characteristics:a. Sound powerb. Temperature mixing and stratificationc. Minimum operating pressured. Air leakagee. Induced airflowf. Fan airflowg. Fan motor electrical powerh. Condensationi. Airflow sensor performance2.3 This standard does not cover individual control compo-nents o

29、r products addressed in other ASHRAE standards ormethods of testing, including but not limited to, the standardslisted in the reference section of this standard.3. DEFINITIONS3.1 This section provides definitions of key terms used inthis standard. For terms not defined below, refer to the defini-tio

30、ns listed in ASHRAE Terminology of Heating, Ventilation,Air Conditioning, and Refrigeration.1airflow: for the purpose of this test method, airflow is the unitvolume displacement of standard air per unit of time. It isnormally measured in cubic feet per minute (cfm) or liters persecond (L/s). air ter

31、minal: a device that automatically modulates thevolume of air delivered to or removed from a defined space inresponse to an external demand.amplification factor (F): the ratio of sensor output to truevelocity pressure. For example, a pressure sensor with a read-ing of 1.0 in. of pressure at a veloci

32、ty pressure of 0.43 in. wouldhave an amplification factor of 1.0/0.43 = 2.3. F may be calcu-lated from K with the following formula, where A is the nomi-nal duct area in ft2. The nominal duct area is calculated basedon the geometry of the duct, not on the actual free area.average mixing temperature:

33、 the average of the dischargetemperatures at a particular operating condition for a giventerminal.booster fan-powered terminal: a terminal that is similar to aseries terminal unit but without a primary valve. It may havesupplemental heat or reheat, depending upon its application.bypass terminal: a t

34、erminal, typically having more than oneoutlet, that uses a method of volume modulation wherebyairflow is varied by distributing the volume required to meetthe space requirements, the balance of primary air beingdiverted away from the space.discharge sound power level: sound power that is transmitted

35、from the terminal outlet.dual-duct terminal: a terminal that may mix, for individual zones,varying portions of two independent sources of primary air.equivalent diameter: the diameter of a circular-duct equiva-lent that will have a cross-sectional area that is equal to that ofa particular rectangula

36、r duct. The equivalent diameter is calcu-lated by the following equation:F4005 AK-2=ANSI/ASHRAE Standard 130-2008 3where is the cross-sectional area.exhaust terminal: an air terminal for regulating exhaust orreturn airflow.fan-powered terminal unit efficiency: the ratio of the totalpower consumed pe

37、r delivered fan air volume.flow coefficient (K): the actual flow (in ft3/min) correspond-ing to a pressure sensor output of 1 in. w.g. may be calcu-lated from the amplification factor, , with the followingformula, where is the nominal duct area in ft2.is often used in terminal unit controls to calcu

38、late actualairflow using the following equation, where cfm is airflow inft3/min and is flow sensor output in in. w.g.:induced airflow: the flow of secondary air into an air terminalresulting from a pressure differential within the terminal.induction terminal: a terminal, typically having more thanon

39、e inlet, that supplies varying proportions of primary andinduced air to meet the room load. This type of terminalexcludes fan-powered terminals.minimum operating pressure: the static or total pressure dropthrough a terminal at a given airflow rate with the damper/valve placed in its full open positi

40、on by its actuator in itsnormal operating mode while the terminal is operating understeady-state control.modulating integral diffuser terminal: a diffuser with thefeatures of an air terminal and with an integral airflow controldevice.octave band: a frequency band with an upper limit that is twicethe

41、 frequency of the lower limit. The center frequency of anoctave band is the geometric mean of its upper and lowerlimits. The following table shows octave bands 1 through 8:parallel flow fan-powered terminal: a terminal in which theprimary valve is in parallel to the fan, thus allowing the primaryair

42、 to bypass the fan. It may have supplemental heat or cooling.power factor: the ratio of real power to apparent power. Powerfactor is a way to describe how much of the current contributesto power in the load. A power factor of one indicates that 100%of the current is contributing to power in the load

43、.primary air: the treated supply air being transported to aterminal.pressure: for the purpose of this test method, static, total, andvelocity pressure shall be based upon standard air.pressure-compensated control system: control system inwhich the airflow through the air terminal is independent ofsy

44、stem pressure.pressure-dependent control system: a control system inwhich the airflow through the air terminal varies with systempressure.quiet air supply: an air supply in which the sound power levelintroduced in the frequency band of interest by the supplyalone is at least 10 dB lower than the mea

45、sured sound powerlevel generated by the air supply and the terminal under test.radiated sound power level: sound power that radiates fromthe terminal casing (plus the induction port if present).reheat: the application of sensible heat to supply air that hasbeen previously cooled below the temperatur

46、e desired formaintaining the temperature of the conditioned space.reheat terminal: a terminal that heats a single source ofprimary air from a cooling and/or dehumidification source.secondary air: air that is drawn into a terminal by means ofinduction and discharged through the terminal outlet.series

47、 flow fan-powered terminal: a terminal where theprimary valve is in series with the fan, and where all air typi-cally flows through the fan. The unit may have supplementalheat or cooling.shall: where shall or shall not is used for a provision specified,that provision is mandatory if compliance with

48、this testmethod is claimed. should: used to indicate provisions that are not mandatory butare desirable as good practice.single-duct terminal: a terminal supplied with one source ofprimary air. This type of terminal excludes fan-poweredterminals.sound power level ( ): a level of sound power that is

49、tentimes the logarithm to the base 10 of the ratio of the soundpower generated by the source to a reference sound power. Thereference sound power shall be 1012watts.supplemental cooling: cooling provided by heat that isremoved from the air source of the unit. supplemental heat: heat that is added to an air source consist-ing primarily of return/plenum air.standard air: air that meets the following criteria:Octave Band Center Frequency (Hz)1632 1253 2504 5005 10006 20007 40008 8000De4 A ()0.5=AKFAK4005 AF-=KPcfm K P=Lw4 ANSI/ASHRA