ANSI ASHRAE 52.2-2017 Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size.pdf

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1、ANSI/ASHRAE Standard 52.2-2017(Supersedes ANSI/ASHRAE Standard 52.2-2012)Includes ANSI/ASHRAE addenda listed in Appendix HMethod of TestingGeneral VentilationAir-Cleaning Devicesfor Removal Efficiencyby Particle SizeSee Informative Appendix H for approval dates by the ASHRAE Standards Committee, the

2、 ASHRAE Technology Committee, andthe American National Standards Institute.This Standard is under continuous maintenance by a Standing Standard Project Committee (SSPC) for which the StandardsCommittee has established a documented program for regular publication of addenda or revisions, including pr

3、ocedures fortimely, documented, consensus action on requests for change to any part of the Standard. The change submittal form,instructions, and deadlines may be obtained in electronic form from the ASHRAE website (www.ashrae.org) or in paperform from the Senior Manager of Standards. The latest edit

4、ion of an ASHRAE Standard may be purchased from theASHRAE website (www.ashrae.org) or from ASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305.E-mail: ordersashrae.org. Fax: 678-539-2129. Telephone: 404-636-8400 (worldwide), or toll free 1-800-527-4723 (fororders in US and Canada

5、). For reprint permission, go to www.ashrae.org/permissions. 2017 ASHRAE ISSN 1041-2336SPECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus Standard developed under the auspices of ASHRAE. Consensus is definedby the American National Standards Institute (ANSI), of whic

6、h ASHRAE is a member and which has approved this Standard as an ANS, as“substantial agreement reached by directly and materially affected interest categories. This signifies the concurrence of more than a simple majority,but not necessarily unanimity. Consensus requires that all views and objections

7、 be considered, and that an effort be made toward their resolution.”Compliance with this Standard is voluntary until and unless a legal jurisdiction makes compliance mandatory through legislation. ASHRAE obtains consensus through participation of its national and international members, associated so

8、cieties, 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 may or may not be ASHRAE members, allmust be technically

9、qualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all Project Committees. The Senior Manager of Standards of ASHRAE should be contacted fora. interpretation of the contents of this Standard,b. participation in the next review of the Standard,c.

10、 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 and acceptedindustry practices. However, ASHR

11、AE does not guarantee, certify, or assure the safety or performance of any products, components, or systemstested, installed, or operated in accordance with ASHRAEs Standards or Guidelines or that any tests conducted under its Standards or Guidelineswill be nonhazardous or free from risk.ASHRAE INDU

12、STRIAL ADVERTISING POLICY ON STANDARDSASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes, bysuggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, a

13、nd by providing other informationthat may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conformanceto them is completely voluntary.In referring to this Standard or Guideline and in marking of equipment and in advertising, no clai

14、m shall be made, either stated or implied,that the product has been approved by ASHRAE.ASHRAE Standing Standard Project Committee 52.2Cognizant TC: 2.4, Particulate Air Contaminants and Particulate Removal EquipmentSPLS Liaison: Rita M. HarroldMichael D. Corbat*, Chair David. B. Christopher* Phil Ma

15、ybee*Kathleen Owen*, Vice-Chair Jeron Downing* Stephen W. Nicholas*Todd A. McGrath*, Secretary Dara Marina Feddersen* Christine Q. Sun*Robert B. Burkhead* Chris Fischer* Paolo M. Tronville*Richard K. Chesson, Jr.* Sanjeev K. Hingorani* Kyung-Ju Choi* David Matier* Denotes members of voting status wh

16、en the document was approved for publicationASHRAE STANDARDS COMMITTEE 20162017Rita M. Harrold, Chair Michael W. Gallagher Cyrus H. NasseriSteven J. Emmerich, Vice-Chair Walter T. Grondzik David RobinJames D. Aswegan Vinod P. Gupta Peter SimmondsNiels Bidstrup Susanna S. Hanson Dennis A. StankeDonal

17、d M. Brundage Roger L. Hedrick Wayne H. Stoppelmoor, Jr.Drury B. Crawley Rick M. Heiden Jack H. ZarourJohn F. Dunlap, Srinivas Katipamula William F. Walter, BOD ExOJames W. Earley, Jr. Cesar L. Lim Patricia Graef, COKeith I. Emerson Arsen K. MelikovJulie M. Ferguson R. Lee Millies, Jr.Stephanie C. R

18、einiche, Senior Manager of StandardsCourtesy copy ONLY for staff/committees responsible for this document. ASHRAE (www.ashrae.org). Per international copyright law, additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written p

19、ermission.CONTENTSANSI/ASHRAE Standard 52.2-2017,Method of Testing General Ventilation Air-Cleaning Devicesfor Removal Efficiency by Particle SizeSECTION PAGEForeword .21 Purpose.32 Scope33 Definitions and Acronyms .34 Test Apparatus45 Apparatus Qualification Testing 96 Test Materials167 Selection a

20、nd Preparation of the Test Device.178 Test Procedures189 Measurement of Resistance versus Airflow1910 Determination of Particle Size Efficiency.1911 Reporting Results2512 Minimum Efficiency Reporting Value (MERV) for Air Cleaners.2613 Normative References.26Informative Appendix A: Commentary.30Infor

21、mative Appendix B: Test Procedure Suggestions and Examples32Informative Appendix C: How to Read a Test Report .38Informative Appendix D: Minimum Efficiency Reporting Guidance.42Informative Appendix E: Cross-Reference and Application Guidelines 44Informative Appendix F: Acronyms and Conversion Formul

22、ae.46Informative Appendix G: Informative References47Informative Appendix H: Addenda Description Information.48Informative Appendix I: (Intentionally Left Blank)49Informative Appendix J: Optional Method of Conditioning a Filter Using Fine KCl Particles toDemonstrate Efficiency Loss That Might Be Rea

23、lized in Field Applications50Informative Appendix K: Optional Method of Testing Two Air Filters Arranged in Series in a System toEvaluate Particle Removal, Dust Loading, and Pressure Drop Increase ThatMight Be Realized in Field Applications.55NOTEApproved addenda, errata, or interpretations for this

24、 standard can be downloaded free of charge from the ASHRAEwebsite at www.ashrae.org/technology. 2017 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

25、.ANSI is a registered trademark of the American National Standards Institute.Courtesy copy ONLY for staff/committees responsible for this document. ASHRAE (www.ashrae.org). Per international copyright law, additional reproduction, distribution, or transmission in either print or digital form is not

26、permitted without ASHRAEs prior written permission.2 ANSI/ASHRAE Standard 52.2-2017(This foreword is not part of this standard. It is merelyinformative and does not contain requirements necessaryfor conformance to the standard. It has not been pro-cessed according to the ANSI requirements for a stan

27、dardand may contain material that has not been subject topublic review or a consensus process. Unresolved objec-tors on informative material are not offered the right toappeal at ASHRAE or ANSI.)FOREWORDANSI/ASHRAE Standard 52.2-2017 incorporates addenda tothe 2012 edition. The goal of the committee

28、 was to improvethe end-user experience by standardizing reporting orimproving the robustness of the test method to reduce vari-ability. The committees intentions were to provide the bestpossible information for the end user to select the best air-cleaning devices to protect people and equipment.Hist

29、orically, standards for testing air cleaners have beendeveloped in response to the needs of the times. Protection ofmachinery and coils came first, then reduction of soiling. Nowconcerns about indoor air quality and respirable particles,protection of products during manufacturing, and protectionof H

30、VAC equipment have prompted development of this teststandard based on particle size.Standards Project Committee (SPC) 52.2 was first orga-nized in 1987 to develop a particle size test procedure but wasdisbanded in 1990 after it became evident that basic researchwas needed. In 1991, a research contra

31、ct (ASHRAE ResearchProject 671, Informative Appendix A, Reference A2) wasawarded to review test methodology and recommendapproaches for obtaining particle size efficiency data. Afterthe research project was completed and accepted in 1993,SPC 52.2 was reactivated with members representing a broadrang

32、e of interests. The standard was then formally publishedin 1999. Changes to the method have been made over theyears to improve it and to make it more relevant. The 2017edition continues that tradition. Appendix H includes a fulllist of changes by addendum:a. Modifications were made to the MERV table

33、 to adjust thethreshold for specific MERVs and allow for the 16 gradu-ations to be more observable in testing.b. To address user concerns about reproducibility and reli-ability of the test method, ASHRAE commissioned ResearchProject RP-1088, a comprehensive round robin of multiplelabs, including mul

34、tiple levels of filtration performance.The changes in the 2017 edition of the standard are basedon direct recommendations of the research project.c. Changes were made with the intent of making the data onreports more mandatory. The goal of the committee was toimprove user experience by ensuring that

35、 reports beingprovided by labs and manufacturers would share the samedata, allowing for a simpler evaluation of products.d. New Informative Appendix K uses the base methodology totest across sequenced filters. This allows users a method oftesting their system in a controlled lab environment. Descrip

36、tion of StandardThis standard addresses two air-cleaner performance charac-teristics of importance to users: the ability of the device toremove particles from the airstream and its resistance to air-flow. Air-cleaner testing is conducted at airflow rates not lessthan 0.22 m3/s (472 cfm) nor greater

37、than 1.4 m3/s (3000 cfm).A sample of air from a general ventilation system con-tains particles with a broad range of sizes having variedeffects, sometimes dependent on particle size. Coarse parti-cles, for example, cause energy waste when they cover heattransfer surfaces. Fine particles cause soilin

38、g and discolor-ation of interior surfaces and furnishings as well as possiblehealth effects when inhaled by occupants of the space. Whenair cleaners are tested and reported for efficiency in accor-dance with this standard, there is a basis for comparison andselection for specific tasks.The test proc

39、edure uses laboratory-generated KCl parti-cles dispersed into the airstream as the test aerosol. A parti-cle counter measures and counts the particles in 12 sizeranges, both upstream and downstream, for the efficiencydeterminations.This standard also delineates a method of loading the aircleaner wit

40、h synthetic dust to simulate field conditions. A setof particle size removal efficiency (PSE) performance curvesat incremental dust loading is developed and, together withan initial clean performance curve, is the basis of a compositecurve representing the minimum performance in each sizerange. Poin

41、ts on the composite curve are averaged and theaverages are then used to determine the minimum efficiencyreporting value (MERV) of the air cleaner.Coarse air cleaners may be tested for particle sizeremoval efficiency when they are clean, with results reportedin the prescribed format. (An example of a

42、 coarse air cleaneris the so-called “furnace” filter, a flat panel with a cardboardframe and spun glass fiber media.) However, the standardalso provides the basis for evaluation using the loading dustefficiency by weight, or “arrestance,” as well as an estimateof predicted life called “dust holding

43、capacity.”Electronic Air CleanersSome air cleaners, such as externally powered electrostaticprecipitators (also known as electronic air cleaners), may notbe compatible with the loading dust used in this test method.The dust contains very conductive carbon that may causeelectrical shorting, thus redu

44、cing or eliminating the effective-ness of these devices and negatively affecting their MERVs. Inactual applications, the efficiency of these devices maydecline over time, and their service life is dependent on theconductivity and the amount of dust collected.Passive Electrostatic Fibrous Media Air F

45、iltersSome fibrous media air filters have electrostatic charges thatmay be either natural or imposed on the media during manu-facturing. Such filters may demonstrate high efficiency whenclean and a drop in efficiency during their actual use cycle.The initial conditioning step of the dust-loading pro

46、ceduredescribed in this standard may affect the efficiency of the fil-ter but not as much as would be observed in actual service.Therefore, the minimum efficiency observed during testingmay be higher than that achieved during actual use.Courtesy copy ONLY for staff/committees responsible for this do

47、cument. ASHRAE (www.ashrae.org). Per international copyright law, additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.ANSI/ASHRAE Standard 52.2-2017 3Not an Application StandardUsers should not misinterpret

48、the intent of this standard. Thisis a test method standard, and its results are to be used todirectly compare air cleaners on a standardized basis irre-spective of their applications. Results are also used to givethe design engineer an easy-to-use basis for specifying an aircleaner. It is entirely p

49、ossible that an industry organizationmay use this test method as the basis for an application stan-dard with, for example, different final resistances.Footnotes are used throughout this standard to providenonmandatory guidance for the user in addition to the non-mandatory guidance found in the informative appendices.Footnotes are for information only and are not part of thestandard.AcknowledgmentsSSPC 52.2 wishes to acknowledge with thanks the contribu-tions of many people outside the voting membership, includ-ing European filtration authorities who made suggestio