ASHRAE 160 ADD B-2012 Criteria for Moisture-Control Design Analysis in Buildings.pdf

1、ANSI/ASHRAE Addendum b toANSI/ASHRAE Standard 160-2009Criteria forMoisture-ControlDesign Analysisin BuildingsApproved by the ASHRAE Standards Committee on October 2, 2012; by the ASHRAE Board of Directors on October 26, 2012;and by the American National Standards Institute on October 27, 2012.This a

2、ddendum was approved by a Standing Standard Project Committee (SSPC) for 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 stand

3、ard. The change submittal form, instructions, and deadlines may beobtained in electronic form from the ASHRAE Web site (www.ashrae.org) or in paper form from the Manager of Standards. The latest edition of an ASHRAE Standard may be purchased on the ASHRAE Web site (www.ashrae.org) or from ASHRAECust

4、omer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail: ordersashrae.org. Fax: 404-321-5478. 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. 2012 ASHRAE ISSN 1041-2336SPECIAL NOTEThi

5、s American National Standard (ANS) is a national voluntary consensus standard developed under the auspices of ASHRAE.Consensus is defined by the American National Standards Institute (ANSI), of which ASHRAE is a member and which has approved thisstandard as an ANS, as “substantial agreement reached

6、by directly and materially affected interest categories. This signifies the concurrenceof more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that aneffort be made toward their resolution.” Compliance with this standard is v

7、oluntary until and unless a legal jurisdiction makes compliancemandatory through legislation.ASHRAE obtains consensus through participation of its national and international members, associated societies, and public review.ASHRAE Standards are prepared by a Project Committee appointed specifically f

8、or 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 qualified in the subject area of the Standard. Every effort is made to balance the concerned interests o

9、n all ProjectCommittees.The Manager of Standards of ASHRAE should be contacted for:a. interpretation of the contents of this Standard,b. participation in the next review of the Standard,c. offering constructive criticism for improving the Standard, ord. permission to reprint portions of the Standard

10、.DISCLAIMERASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of available information andaccepted industry practices. However, ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components,or systems teste

11、d, installed, or operated in accordance with ASHRAEs Standards or Guidelines or that any tests conducted under itsStandards or Guidelines will be nonhazardous or free from risk.ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDSASHRAE Standards and Guidelines are established to assist industry and the

12、 public by offering a uniform method of testing for ratingpurposes, by suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providingother information that may serve to guide the industry.The creation of ASHRAE Standards and Guide

13、lines is determined by the need for them,and conformance to them is completely voluntary.In referring to this Standard or Guideline and in marking of equipment and in advertising, no claim shall be made, either stated or implied,that the product has been approved by ASHRAE.ASHRAE Standing Standard P

14、roject Committee 160CognizantTC:TC 4.4, Building Materials and Building Envelope PerformanceSPLS Liaison: Charles Barnaby*Denotes members of voting status when the document was approved for publicationAnton Tenwolde, Chair* Achilles N. Karagiozis* Elbert G. Phillips*William B. Rose, Secretary* Hartw

15、ig M. Kunzel* Paul H. Shipp*Lixing Gu* Wahid Maref* Raoul A. Webb*Jonathan Humble* Robert R. Marshall* Theresa A. Weston*Richard E. Peters*ASHRAE STANDARDS COMMITTEE 20122013Kenneth W. Cooper, Chair Julie M. Ferguson Janice C. PetersonWilliam F. Walter, Vice-Chair Krishnan Gowri Heather L. PlattDoug

16、lass 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 Ex

17、OSteven J. Emmerich Rick A. Larson Constantinos A. Balaras, COMark P. ModeraStephanie C. Reiniche, Manager of StandardsASHRAE is a registered trademark of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.ANSI is a registered trademark of the American National Standa

18、rds Institute.ANSI/ASHRAE Addendum b 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 the standard. It has not beenprocessed according to the ANSI requirements for astandard and may co

19、ntain 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.)FOREWORDThis addendum modifies Section 4.3 and Table 4.3.2 asshown below.Section 4.3: The SSPC realized that indoor desig

20、nhumidities exceeding 70% RH are excessive and would likelylead directly to indoor mold and should therefore not beallowed for design analysis.Table 4.3.2: It has become apparent that the residentialgeneration rates in Table 4.3.2 are very high. Changes toTable 4.3.2 are based on recent analysis of

21、measured indoorhumidity and ventilation data. Note: In this addendum, changes to the current standardare indicated in the text by underlining (for additions) andstrikethrough (for deletions) unless the instructions specifi-cally mention some other means of indicating the changes.4.3 Indoor Design Hu

22、midity. If the HVAC equipmentand controls are included in the design, the intended designindoor humidity shall be used. If no such provisions are made,then indoor design humidity shall be determined by one ofthree methods: a. Simplified method (in accordance with Section 4.3.1)b. Intermediate method

23、 (in accordance with Section 4.3.2)c. Full parameter calculation (in accordance with Section4.3.3)Indoor design humidity shall not exceed 70% RH.The indoor design humidity shall be checked for compli-ance with applicable standards, such as ANSI/ASHRAE Stan-dard 55.1If calculated design humidity is o

24、utside the rangesspecified, measures shall be taken to bring the humidity withinthe specified range.Addendum b to Standard 160-2009Revise Section 4.3 and Table 4.3.2 as follows.Table 4.3.2 Residential Design Moisture Generation RatesNumber of BedroomsNumber of OccupantsMoisture Generation Rate1 bedr

25、oom 2 8 7 L/day 0.9 0.8 x 10-4kg/s 0.7 0.64 lb/h2 bedrooms 3 12 9 L/day 1.4 1.0 x 10-4kg/s 1.1 0.83 lb/h3 bedrooms 4 14 10 L/day 1.6 1.2 x 10-4kg/s 1.3 0.92 lb/h4 bedrooms 5 15 11 L/day 1.7 1.3 x 10-4kg/s 1.4 1.0 lb/hAdditional bedrooms +1 per bedroom +1 L/day +0.1 x 10-4kg/s +0.1 lb/hPOLICY STATEME

26、NT DEFINING ASHRAES CONCERNFORTHE ENVIRONMENTAL IMPACT OF ITS ACTIVITIESASHRAE is concerned with the impact of its members activities on both the indoor and outdoor environment. ASHRAEsmembers will strive to minimize any possible deleterious effect on the indoor and outdoor environment of the system

27、s andcomponents in their responsibility while maximizing the beneficial effects these systems provide, consistent with acceptedstandards and the practical state of the art.ASHRAEs short-range goal is to ensure that the systems and components within its scope do not impact the indoor andoutdoor envir

28、onment to a greater extent than specified by the standards and guidelines as established by itself and otherresponsible bodies.As an ongoing goal, ASHRAE will, through its Standards Committee and extensive technical committee structure,continue to generate up-to-date standards and guidelines where a

29、ppropriate and adopt, recommend, and promote those newand revised standards developed by other responsible organizations.Through its Handbook, appropriate chapters will contain up-to-date standards and design considerations as the material issystematically revised.ASHRAE will take the lead with resp

30、ect to dissemination of environmental information of its primary interest and will seekout and disseminate information from other responsible organizations that is pertinent, as guides to updating standards andguidelines.The effects of the design and selection of equipment and systems will be consid

31、ered within the scope of the systemsintended 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. However, energy source selection and the possible environmental impact due to the energy source and energytransportation will be considered where possible. Recommendations concerning energy source selection should be made byits members.ASHRAE 1791 Tullie Circle NE Atlanta, GA 30329 www.ashrae.org11/12