1、ANSI/ASHRAE Addendum e toANSI/ASHRAE Standard 160-2009Criteria forMoisture-ControlDesign Analysis inBuildingsApproved by ASHRAE on November 30, 2016, and and by the American National Standards Institute on November 30,2016.This addendum was approved by a Standing Standard Project Committee (SSPC) fo
2、r which the Standards Committee has estab-lished a documented program for regular publication of addenda or revisions, including procedures for timely, documented, con-sensus action on requests for change to any part of the standard. The change submittal form, instructions, and deadlines may beobtai
3、ned in electronic form from the ASHRAE website (www.ashrae.org) or in paper form from the Senior Manager of Standards. The latest edition of an ASHRAE Standard may be purchased on the ASHRAE website (www.ashrae.org) or from ASHRAE Cus-tomer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-
4、mail: ordersashrae.org. Fax: 678-539-2129. Telephone: 404-636-8400 (worldwide), or toll free 1-800-527-4723 (for orders in US and Canada). For reprint permission, go towww.ashrae.org/permissions. 2016 ASHRAE ISSN 1041-2336ASHRAE is a registered trademark of the American Society of Heating, Refrigera
5、ting and Air-Conditioning Engineers, Inc.ANSI is a registered trademark of the American National Standards Institute.SPECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus Standard developed under the auspices of ASHRAE. Consensus is definedby the American National Stand
6、ards Institute (ANSI), of which 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
7、 that all views and objections 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 intern
8、ational 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 may or may not be ASHRAE me
9、mbers, allmust be technically 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
10、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 and acceptedind
11、ustry practices. However, ASHRAE 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
12、 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 rating purposes, bysuggesting safe practices in designing and installing equipment, by providing proper de
13、finitions of this equipment, and 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 equipme
14、nt and in advertising, no claim shall be made, either stated or implied,that the product has been approved by ASHRAE.ASHRAE Standing Standard Project Committee 160Cognizant TC: 4.4, Building Materials and Building Envelope PerformanceSPLS Liaison: Keith I. EmersonStanley D. Gatland, II, Chair* Peter
15、 J. Adams* Jonathan Humble*Achilles N. Karagiozis, Vice Chair* Lois Arena* Manfred Kehrer*Samuel Glass, Secretary* Elliott Horner* Fitsum Tariku* Denotes members of voting status when the document was approved for publicationASHRAE STANDARDS COMMITTEE 20162017Rita M. Harrold, Chair Michael W. Gallag
16、her 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. StankeDonald M. Brundage Roger L. Hedrick Wayne H. Stoppelmoor, Jr.Drury B. Crawley Rick M. Heiden Jack H. ZarourJohn F. Dunlap, S
17、rinivas 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. Reiniche, Senior Manager of Standards ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribut
18、ion, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.ANSI/ASHRAE Addendum e to ANSI/ASHRAE Standard 160-2009 1(This foreword is not part of this standard. It is merelyinformative and does not contain requirements necessaryfor conformance to t
19、he standard. It has not been pro-cessed according to the ANSI requirements for a standardand 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.)FOREWORDThis addendu
20、m revises Sections 6.1 and 7.5 as indicatedbelow. Since the publication of Standard 160-2009, it hasbecome apparent that the performance evaluation criteria formold growth are too stringent. Section 6.1 currently prescribesa simplified criterion that is easy to calculate but difficult tomeet: a flat
21、 80% 30-day running average surface relativehumidity criterion, bounded by temperatures between 5C(41F) and 40C (104F). A number of researchers and prac-titioners have reported to the committee that assemblies thatare known to have satisfactory performance in reality are fail-ing the criterion in si
22、mulation. Furthermore, the scientific lit-erature indicates that mold growth requires a much morecomplex description. Mathematical models have been devel-oped that predict mold growth risk as a function of time, sur-face temperature, and surface relative humidity. Such modelscan readily use as input
23、s the hourly outputs of a hygrothermalsimulation. The mold growth model selected for implementa-tion in Section 6.1 of Standard 160 by this addendum is empir-ical and has been validated with experimental data fordifferent materials with varying sensitivities to mold growth.This addendum will bring t
24、he standard more in line with thecurrent state of knowledge about mold growth while providinga less stringent criterion. Changes to Section 7.5 bring thereporting requirements in line with the changes to Section 6.1.Note: In this addendum, changes to the current standardare indicated in the text by
25、underlining (for additions) andstrikethrough (for deletions) unless the instructions specifi-cally mention some other means of indicating the changes. 6.1 Conditions Necessary to Minimize Mold Growth. Inorder to minimize problems associated with mold growth onthe surfaces of components of building e
26、nvelope assemblies,the following condition shall be met: a 30-day running aver-age surface RH 0C (Ts 32F) and RHs RHcrit) to unfavorable (Ts 0C (Ts 32F) or RHs RHcrit).The mold index decline coefficient used in the evaluationand the rationale for its selection shall be stated in the report.In the ab
27、sence of specific test data for the material surface,the recommended value of k3shall be 0.1B-25.7.5 Provide the moisture performance evaluation criteriaused and provide results.If conditions necessary to minimize mold growth areevaluated, provide the following: Criteria used (80% surface RH/other)
28、Moisture content and coincident temperatures of materials Material sensitivity class and rationale for its selection Mold index decline coefficient and rationale for its selection Time series of surface temperature and surface relativehumidity values Time series of mold index values Outcome (pass/fa
29、il)If corrosion is evaluated, provide the following: Criterion used (80% surface rh/other) Time series of surface temperature and surface relativehumidity values Outcome (pass/fail)M k1k21680.68 Ts13.9 RHslnln +0.14W 66.02+exp-= Tsin CM k1k21680.68 Ts321.8ln 13.9 RHs0.14W 66.02+lnexp-= Tsin Fk2max 1
30、 2.3 MMmaxexp 0=MmaxABRHcritRHsRHcrit100-CRHcritRHsRHcrit100-2+=Revise Section 7.5 as follows.M0.00133 k3when tdecl60 when 6 tdecl24 0.000667 k3when tdecl24= ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not
31、permitted without ASHRAEs prior written permission.ANSI/ASHRAE Addendum e to ANSI/ASHRAE Standard 160-2009 3FIGURE 6.1 Critical surface relative humidity as a function of surface temperature for different material sensitivity classes.TABLE 6.1.1 Recommended Mold Sensitivity Classes for Various Mater
32、ialsSensitivity Class MaterialsVery sensitive Untreated wood; includes lots of nutrients for biological growthSensitive Planed wood, paper-coated products, wood-based boardsMedium resistant Cement or plastic based materials, mineral fibersResistant Glass and metal products, materials with efficient
33、protective compound treatmentsTABLE 6.1.2 Parameters for Equations 6-4 and 6-6Sensitivity Classk1W A B C(if M 1) (if M 1)Very sensitive 1 2 0 1 7 2Sensitive 0.578 0.386 1 0.3 6 1Medium resistant 0.072 0.097 1 0 5 1.5Resistant 0.033 0.014 1 0 3 1 ASHRAE (www.ashrae.org). For personal use only. Additi
34、onal reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission. ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without
35、ASHRAEs prior written permission.POLICY STATEMENT DEFINING ASHRAES CONCERNFOR THE ENVIRONMENTAL IMPACT OF ITS ACTIVITIESASHRAE is concerned with the impact of its members activities on both the indoor and outdoor environment.ASHRAEs members will strive to minimize any possible deleterious effect on
36、the indoor and outdoor environment ofthe systems and components in their responsibility while maximizing the beneficial effects these systems provide,consistent with accepted Standards and the practical state of the art.ASHRAEs short-range goal is to ensure that the systems and components within its
37、 scope do not impact theindoor and outdoor environment to a greater extent than specified by the Standards and Guidelines as established byitself and other responsible bodies.As an ongoing goal, ASHRAE will, through its Standards Committee and extensive Technical Committee structure,continue to gene
38、rate up-to-date Standards and Guidelines where appropriate and adopt, recommend, and promotethose new and revised Standards developed by other responsible organizations.Through its Handbook, appropriate chapters will contain up-to-date Standards and design considerations as thematerial is systematic
39、ally revised.ASHRAE will take the lead with respect to dissemination of environmental information of its primary interest andwill seek out and disseminate information from other responsible organizations that is pertinent, as guides to updatingStandards and Guidelines.The effects of the design and s
40、election of equipment and systems will be considered within the scope of thesystems intended use and expected misuse. The disposal of hazardous materials, if any, will also be considered.ASHRAEs primary concern for environmental impact will be at the site where equipment within ASHRAEs scopeoperates
41、. However, energy source selection and the possible environmental impact due to the energy source andenergy transportation will be considered where possible. Recommendations concerning energy source selectionshould be made by its members. ASHRAE (www.ashrae.org). For personal use only. Additional re
42、production, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.ASHRAE 1791 Tullie Circle NE Atlanta, GA 30329 www.ashrae.org About ASHRAEASHRAE, founded in 1894, is a global society advancing human well-being through sustainable te
43、chnology for thebuilt environment. The Society and its members focus on building systems, energy efficiency, indoor air quality,refrigeration, and sustainability. Through research, Standards writing, publishing, certification and continuingeducation, ASHRAE shapes tomorrows built environment today.
44、For more information or to become a member of ASHRAE, visit www.ashrae.org.To stay current with this and other ASHRAE Standards and Guidelines, visit www.ashrae.org/standards.Visit the ASHRAE BookstoreASHRAE offers its Standards and Guidelines in print, as immediately downloadable PDFs, on CD-ROM, a
45、nd viaASHRAE Digital Collections, which provides online access with automatic updates as well as historical versions ofpublications. Selected Standards and Guidelines are also offered in redline versions that indicate the changes madebetween the active Standard or Guideline and its previous version.
46、 For more information, visit the Standards andGuidelines section of the ASHRAE Bookstore at www.ashrae.org/bookstore.IMPORTANT NOTICES ABOUT THIS STANDARDTo ensure that you have all of the approved addenda, errata, and interpretations for thisStandard, visit www.ashrae.org/standards to download them free of charge.Addenda, errata, and interpretations for ASHRAE Standards and Guidelines are no longerdistributed with copies of the Standards and Guidelines. ASHRAE provides these addenda,errata, and interpretations only in electronic form to promote more sustainable use ofresources.12/16
