ANSI ASHRAE 113-2013 Method of Testing for Room Air Diffusion《室内空气扩散用试验方法》.pdf

1、ANSI/ASHRAE Standard 113-2013(Supersedes ANSI/ASHRAE Standard 113-2009)Method of Testingfor Room Air DiffusionApproved by the ASHRAE Standards Committee on January 26, 2013; by the ASHRAE Board of Directors on January 29, 2013;and by the American National Standards Institute on January 30, 2013.ASHR

2、AE Standards are scheduled to be updated on a five-year cycle; the date following the standard number is the year ofASHRAE Board of Directors approval. The latest edition of an ASHRAE Standard may be purchased on the ASHRAE Web site(www.ashrae.org) or from ASHRAE Customer Service, 1791 Tullie Circle

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4、 Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.SPECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus standard developed under the auspices of ASHRAE.Consensus is defined b

5、y the American National Standards Institute (ANSI), of which ASHRAE is a member and which has approved thisstandard as an ANS, as “substantial agreement reached by directly and materially affected interest categories. This signifies the concurrenceof more than a simple majority, but not necessarily

6、unanimity. Consensus requires that all views and objections be considered, and that aneffort be made toward their resolution.” Compliance with this standard is voluntary until and unless a legal jurisdiction makes compliancemandatory through legislation.ASHRAE obtains consensus through participation

7、 of its national and international members, associated societies, and public review.ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The ProjectCommittee Chair and Vice-Chair must be members of ASHRAE; while other committee members

8、may or may not be ASHRAE members, allmust be technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all ProjectCommittees. The Manager of Standards of ASHRAE should be contacted for:a. interpretation of the contents of this Standard,b. p

9、articipation 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 informa

10、tion 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

11、will 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

12、 providing 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 i

13、n marking of equipment and in advertising, no claim shall be made, either stated or implied,that the product has been approved by ASHRAE.ASHRAE STANDARDS COMMITTEE 20122013Kenneth W. Cooper, Chair Julie M. Ferguson Janice C. PetersonWilliam F. Walter, Vice-Chair Krishnan Gowri Heather L. PlattDougla

14、ss S. Abramson Cecily M. Grzywacz Ira G. PostonKarim Amrane Richard L. Hall Douglas T. ReindlCharles S. Barnaby Rita M. Harrold James R. TaubyHoy R. Bohanon, Jr. Adam W. Hinge James K. VallortSteven F. Bruning Debra H. Kennoy Craig P. WrayDavid R. Conover Jay A. Kohler Charles H. Culp, III, BOD ExOS

15、teven J. Emmerich Rick A. Larson Constantinos A. Balaras, COMark P. ModeraStephanie C. Reiniche, Manager of StandardsASHRAE Standard Project Committee 113Cognizant TC: TC 5.3, Room Air DistributionSPLS Liaison: Roger L. HedrickMohammad H. Hosni, Chair* Bjarne W. OlesenTakashi Akimoto* Rajendra N. Sh

16、ah*Douglas P. Baker Jerry M. Sipes*Fred S. Bauman* Jack L. Stegall*Robert T. Clark* Harold E. Straub*Daniel Int-Hout, III Richard T. Swierczyna*Rodney H. Lewis Shin-Ichi Tanabe*Frederick A. Lorch* Paul R. Vandermeulen*Kenneth J. Loudermilk* William J. Waeldner*Arsen Krikor Melikov* Jianshun S. Zhang

17、*Paul L. Miller, Jr. Alexander M. Zhivov*Denotes members of voting status when the document was approved for publication ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior writt

18、en permission.CONTENTSANSI/ASHRAE Standard 113-2013,Method of Testing for Room Air DiffusionSECTION PAGEForeword. 21 Purpose 22 Scope . 23 Definitions. 24 Classification of Parameters. 35 Instruments and Apparatus 36 Test Conditions and Procedures. 57 Measurements and Measurement Locations . 58 Repo

19、rt. 59 References . 6Informative Annex AData Collection and Recommended Calculations 6Informative Annex BRating Methods. 7Informative Annex CExample Calculations. 10Informative Annex DCompliance. 12Informative Annex EBibliography 13NOTEApproved addenda, errata, or interpretations for this standard c

20、an be downloaded free of charge from the ASHRAE Web site at www.ashrae.org/technology. 2013 ASHRAE1791 Tullie Circle NE Atlanta, GA 30329 www.ashrae.org All rights reserved.ASHRAE is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.ANSI is

21、a registered trademark of the American National Standards Institute. ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.2 ANSI/ASHRAE Standard 113-2013(This f

22、oreword is not part of this standard. It is merelyinformative and does not contain requirementsnecessary for conformance to the standard. It has notbeen processed according to the ANSI requirementsfor a standard and may contain material that has notbeen subject to public review or a consensus proces

23、s.Unresolved objectors on informative material are notoffered the right to appeal at ASHRAE or ANSI.) FOREWORDThis is a revision of ANSI/ASHRAE Standard 113-2009.This standard was prepared under the auspices of ASHRAE.It may be used, in whole or in part, by an association or gov-ernment agency with

24、due credit to ASHRAE. Adherence isstrictly on a voluntary basis and merely in the interests ofobtaining uniform standards throughout the industry. The changes made for the 2013 revision were: The references were updated.Minor editorial changes were made. A new section titled References was added inI

25、nformative Annexes B and D.1. PURPOSEThe purpose of this standard is to define a repeatablemethod of testing the steady-state air diffusion perfor-mance of an air distribution system in occupied zones ofbuilding spaces. This method is based on air velocity and airtemperature distributions at specifi

26、ed heating or coolingloads and operating conditions.2. SCOPE2.1 This standard specifies equipment and procedures formeasuring air speed and air temperature in occupied zonesof building spaces.2.2 This standard applies to furnished or unfurnishedspaces (actual or mock-up), with or without occupants.2

27、.3 This standard applies to air distribution systems,including systems in whicha. air outlets are located inside, inside and outside, oroutside of the occupied zone andb. local air velocities in the occupied zone are or are notunder control by individual occupants.2.4 This standard does not covera.

28、rating of individual air outlets and inlets orb. naturally ventilated building spaces.3. DEFINITIONSair delivery rate (Q/A): the air volume flow rate per unitarea of the entire floor space being conditioned.air diffusion: the introduction of air into a building spacefor the purpose of providing acce

29、ptable velocity andtemperature distribution in the occupied zone.air diffusion performance index (ADPI): a single numberrating of the air diffusion performance of a mixing systemat specified supply air conditions and space cooling load.ADPI is based on air speed and effective draft temperature(see S

30、ection B1 in Annex B).air distribution: the delivery of air through ducts orplenums.air outlet: any device for supplying air to a space, such asa diffuser, a grille, or a register.air inlet: any device through which air is removed from aconditioned space.air temperature (t): the temperature of the a

31、ir measured ata test point.average air outlet speed, (Vo): the time-averaged speed ofthe air from each individual supply air outlet. average supply air outlet temperature (tdc ): the averagevalue of the individual corrected supply air outlet temper-atures, measured at the same time as each of the te

32、st posi-tion measurements.average test zone air temperature (tac ): the average of allcorrected air temperatures within the test zone (see Section A2in Annex A).clear zone: when outlets are placed within or near the testzone, a clear zone is defined as the space around the outletwithin which long-te

33、rm occupancy is not recommended.control temperature: the temperature at the location of thetest zone controlling device (e.g., a room thermostat).corrected air temperature (tacn ): the temperature at a testpoint, n, corrected for room temperature swing (see Section A1in Annex A).design temperature:

34、the specified desired temperature ofthe test zone.displacement ventilation (DV) system: a type of air distri-bution system, used only for cooling purposes, in which airat a temperature below room temperature is supplied to thefloor level at a low discharge velocity ( 100%, use DR = 100%.Equations B-

35、1a and B-1b are developed for air tempera-tures in the range of 68F79F (20C26C). Underestima-tion of the percent of occupants dissatisfied due to draft maybe expected when the equations are applied for temperaturesbelow 68F (20C) and overestimation for air temperaturesabove 79F (26C).The maximum all

36、owable mean air speed as a function ofthe air temperature and turbulence intensity is given inFigure B.2.1 for DR = 10% and DR = 20%, corresponding to10% and 20% of occupants dissatisfied due to draft, respec-tively.The turbulence intensity of airflow in rooms changes withthe mean air speed and vari

37、es within the space. However, onaverage, the turbulence intensity in a large part of the occupiedzone in rooms with mixing ventilation is around 40% andaround 20% in rooms with displacement ventilation. Thesevalues may be used to simplify Equations B-1a and B-1b andto calculate the draft rating with

38、 reasonable accuracy based onmean air speed and air temperature measurements.The maximum allowable mean air speed in rooms withdisplacement ventilation (Tu = 20%) and rooms with mixingventilation (Tu = 40%) is given in Figure B.2.2 as a functionof local air temperature and draft rating. Figure B.2.1

39、 Maximum allowable local mean air speed as a function of local air temperature and turbulence intensity for (a) DR = 10% and (b) DR = 20%, correspond-ing to 10% and 20% of occupants dissatisfied due to draft, respectively.(a)(b)Figure B.2.2 Maximum allowable local mean air speed as a function of loc

40、al air temperature and turbulence intensity in rooms with (a) displacement (Tu = 20%) and (b) mixing ventilation (Tu = 40%). (a)(b) ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs

41、prior written permission.ANSI/ASHRAE Standard 113-2013 9B.2.2 Measurements and Measurement Locations.Measurement of air temperature, mean air speed, and turbu-lence intensity is required in order to calculate DR. Theinstruments, as specified in Section 5, can measure these air-flow characteristics.

42、When the instrument does not give accu-rate measurement of the turbulence intensity, it can beestimated to be 40% in rooms with mixing, UFAD, and TACsystems and 20% in rooms with DV systems.The measurements should be taken at the heights speci-fied in Section 7. Some occupants in rooms will complain

43、 of draft regard-less of whether it is localized to one part of the body or felt atmore than one part of the body. Therefore, the highest value ofDR calculated at the measured heights for each measurementlocation will be used to evaluate the performance of thesystem. The highest value at each measur

44、ement locationshould be equal to or lower than a target value. The permissiblevalue of DR as specified in ASHRAE Standard 55B1may beused as a target value. B3. PERFORMANCE EVALUATION FOR STRATIFIED SYSTEMSB.3 The draft rating method and requirements described inASHRAE Standard 55B1and ISO 7730B2shou

45、ld be used toevaluate stratified systems. The data measured in the clearzone and thermal plumes from the simulated load in theroom can be used to define the clear zone and thermalplumes but should be excluded from the evaluation.B.3.1 Description of the Clear ZoneDuring the placement of floor diffus

46、ers for UFADsystems, a clear zone is typically defined as an imaginarycylinder of specified radius around the center point of thediffuser. Clear zones are generally 1.53 ft (0.51.0 m) inradius, depending on manufacturers data, and represent anarea within which long-term occupancy is not recommended.

47、Although local thermal conditions may be acceptable forshort-term occupancy and acceptable when under direct indi-vidual control by the occupant, air velocities may be too highand temperatures too low (under cooling conditions) withinclear zones to satisfy the thermal comfort preferences of alarge m

48、ajority of occupants (80%). For furniture-based supply outlets, as part of a TACsystem, it is assumed that occupants are positioned at typicalwork locations (e.g., in front of desks) and that they have indi-vidual control of the amount and direction of supply air fromthe outlet. In these situations,

49、 a clear zone is defined as asquare area (typically 34 ft 11.3 m on a side), or equiva-lent, at the usual work location within which the occupant hasadequate control of the local diffuser(s).For DV systems, the clear zone (sometimes referred to asthe adjacent zone) is defined as the region immediately adja-cent to the supply outlets within which cool temperatures andthe potential for draft discomfort exists.B.3.2 Recommended Limits for Clear Zone. If an occu-pant will work within a clear zone (UFAD and TAC systemsonly), verification that th