1、ASHRAE STANDARDAmerican Society of Heating, Refrigeratingand Air-Conditioning Engineers, Inc.1791 Tullie Circle NE, Atlanta, GA 30329www.ashrae.orgEnergy-EfficientDesign of Low-RiseResidential BuildingsANSI/ASHRAE Standard 90.2-2007(Supersedes ANSI/ASHRAE Standard 90.2-2004)Includes ANSI/ASHRAE adde
2、nda listed in Appendix CSee Appendix C for approval dates by the ASHRAE Standards Committee, the ASHRAE Board of Directors, andthe American National Standards Institute.This standard is under continuous maintenance by a Standing Standard Project Committee (SSPC) for which theStandards Committee has
3、established a documented program for regular publication of addenda or revisions,including procedures for timely, documented, consensus action on requests for change to any part of the stan-dard. The change submittal form, instructions, and deadlines may be obtained in electronic form from the ASHRA
4、EWeb site, http:/www.ashrae.org, or in paper form from the Manager of Standards. The latest edition of an ASHRAEStandard may be purchased from ASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail: ordersashrae.org. Fax: 404-321-5478. Telephone: 404-636-8400 (worldwide), or
5、 toll free 1-800-527-4723(for orders in U.S. and Canada). Copyright 2007 ASHRAE, Inc.ISSN 1041-2336SPECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus standard developed under the auspices of the AmericanSociety of Heating, Refrigerating and Air-Conditioning Engineers
6、 (ASHRAE). Consensus is defined by the American National StandardsInstitute (ANSI), of which ASHRAE is a member and which has approved this standard as an ANS, as “substantial agreement reachedby directly and materially affected interest categories. This signifies the concurrence of more than a simp
7、le majority, but not necessarilyunanimity. Consensus requires 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 obtain
8、s consensus through participation of its national and international members, associated societies, and publicreview.ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. TheProject Committee Chair and Vice-Chair must be members of ASHRAE
9、; while other committee members may or may not be ASHRAEmembers, all must be technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interestson all Project Committees. The Manager of Standards of ASHRAE should be contacted for:a. interpretation of th
10、e 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.ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDSASHRAE Standards and Guidelines are established to assis
11、t industry and the public by offering a uniform method of testing for rating purposes, by suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other information that may serve to guide the industry. The creation of ASHRA
12、E 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 marking of equipment and in advertising, no claim shall bemade, either stated or implied, that the product has been approved by ASHRAE.DISC
13、LAIMERASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of availableinformation and accepted industry practices. However, ASHRAE does not guarantee, certify, or assure the safety orperformance of any products, components, or systems tested, in
14、stalled, or operated in accordance with ASHRAEs Standardsor Guidelines or that any tests conducted under its Standards or Guidelines will be nonhazardous or free from risk.ASHRAE STANDARDS COMMITTEE 20062007David E. Knebel, ChairStephen D. Kennedy, Vice-ChairMichael F. BedaDonald L. BrandtSteven T.
15、BushbyPaul W. CabotHugh F. CrowtherSamuel D. Cummings, Jr.Robert G. DoerrRoger L. HedrickJohn F. HoganEli P. Howard, IIIFrank E. JakobJay A. KohlerJames D. LutzCarol E. MarriottMerle F. McBrideMark P. ModeraRoss D. MontgomeryH. Michael NewmanStephen V. SantoroLawrence J. SchoenStephen V. SkalkoBodh
16、R. SubherwalJerry W. White, Jr.James E. WoodsRichard D. Hermans, BOD ExOHugh D. McMillan, III, COClaire B. Ramspeck, Assistant Director of Technology for Standards and Special ProjectsASHRAE Standing Standard Project Committee 90.2Cognizant TC: TC 7.6, System Energy UtilizationSPLS Liaison: Hugh F.
17、CrowtherASHRAE Staff Liaison: Steven C. FergusonJonathan Humble, Chair*Denise M. BeachDavid C. Bixby*Paul W. Cabot*Roy R. Crawford*S. Craig Drumheller*Thomas A. FarkasAllan Fraser*Stephen D. KennedyJohn J. LoyerRobert G. Lucas*Merle F. McBride*Ronald G. Nickson*Wayne R. Reedy*Steven Rosenstock*Bipin
18、 Vadilal Shah*Sirajuddin ShaikhSteve Skalko*Roland TempleMartha G. VanGeem*Raymond J. Wojcieson*Denotes members of voting status when this standard was approved for publication.CONTENTSANSI/ASHRAE Standard 90.2-2007Energy-Efficient Design of Low-Rise Residential BuildingsSECTION PAGEcKKKKKKKKKKKKKKK
19、KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK ON=m KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK
20、KKKKKKKKKK PO=pKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK PP=aI=I=I=p KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK PQ=KKKKKKKKKKKKKKKKKKKK
21、KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK QR=_=b=oKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK QS=eI=sI=J=EesF=p=bKKKKKKKKKKKKKKKKKKKKKK
22、KKKKKKKKKKKKKKKKKKKKKKKKKKK NMT=p=t=eKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK NPU=b=jKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK
23、 NPV=a KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK OONM=k=oKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK PUk=W=b
24、=m=m=qJl=jKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK QMf=_W=f=o KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK QQf=W=a=fKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKQRNOTEWhen addenda, interpretatio
25、ns, 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 2007 American Society of Heating,Refrigerating and Air-Conditioning Engineers, Inc.1791 Tullie Circle NEAtlanta, GA 30329www.ashrae.orgAll rights reser
26、ved.2 ANSI/ASHRAE Standard 90.2-2007(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-dard and may contain material that has not bee
27、n subjectto public review or a consensus process. Unresolvedobjectors on informative material are not offered theright to appeal at ASHRAE or ANSI.)FOREWORDThe original Standard 90.2 was published in 1993, andrevised editions were published in 2001 and 2004. TheASHRAE Board of Directors voted in 199
28、9 to place ASHRAEstandards on continuous maintenance, permitting the standardto be updated several times each year through the publicationof approved addenda to the standard. Starting with the 2001edition, the standard is now published in its entirety everythird year. This schedule was intended to a
29、llow the standard tobe submitted and proposed by the deadline for inclusion orreference in model building and energy codes. All approvedaddenda and errata will be included in the new edition everythree years. This procedure allows users to have some cer-tainty about when new editions will be publish
30、ed.This 2007 edition of the standard has several new fea-tures, which can be viewed in brief in Appendix C of this docu-ment or online at www.ashrae.org. The committee welcomessuggestions for improving the standard. Users of the standardare encouraged and invited to use the continuous maintenancepro
31、cedure to suggest changes. A form, Submittal of ProposedChange, is included at the back of this standard. The commit-tee will take formal action on every proposal received.The Standing Standards Project Committee is continu-ally considering changes and proposing addenda for publicreview. When addend
32、a are approved, notices will be pub-lished on the ASHRAE Web site. Users are encouraged tosign up for the free ASHRAE Internet Listserv for this stan-dard to receive notice of all public review drafts and pub-lished addenda and errata.ANSI/ASHRAE Standard 90.2-2007 31. PURPOSE The purpose of this st
33、andard is to provide minimumrequirements for the energy-efficient design of residentialbuildings.2. SCOPE 2.1 This standard provides minimum energy-efficiencyrequirements for the design and construction ofa. new residential dwelling units and their systems and b. where explicitly specified,1. new po
34、rtions of residential dwelling units and theirsystems and2. new systems and equipment in existing dwelling units.Note: There are no requirements in this standard thatapply to new portions of residential dwelling units and theirsystems, nor to new systems and equipment in existing dwell-ing units.For
35、 the purposes of this standard, “residential dwellingunits” include single-family houses, multi-family structures(of three stories or fewer above grade), and modular houses.This standard does not include “transient” housing, such ashotels, motels, nursing homes, jails, and barracks, or manu-factured
36、 housing. 2.2 This standard applies to the building envelope, heatingequipment and systems, air-conditioning equipment andsystems, domestic water-heating equipment and systems,and provisions for overall building design alternatives andtrade-offs. 2.3 This standard does not apply to a. specific proce
37、dures for the operation, maintenance, anduse of residential buildings; b. portable products such as appliances and heaters; andc. residential electric service or lighting requirements. 2.4 This standard shall not be used to abridge any safety,health, or environmental requirements. 3. DEFINITIONS, AB
38、BREVIATIONS,ACRONYMS, AND SYMBOLS 3.1 Purpose. The purpose of this section is to define allterms, abbreviations, acronyms, and symbols unique to thisstandard. 3.2 Scope. These terms, abbreviations, acronyms, and sym-bols are applicable to all sections of this standard. Definitionsas contained in ASH
39、RAE Terminology of Heating, Ventilation,Air Conditioning, fenestration assemblies,including all glazed surfaces and sash and framingelements; and door assemblies. Areas of vents, grilles, andpipes are excluded. area of all fenestration assemblies: interior surface area ofsuch assemblies including al
40、l glazed surfaces (such aswindows, skylights, and sliding glass doors), sashes, curbing,or framing elements that enclose conditioned space. For doorswhere the daylight opening area is less than 50% of the doorarea, the fenestration area is the daylight opening area. For allother doors, the fenestrat
41、ion area is the door area. area of all floor assemblies: interior surface area of suchassemblies that enclose conditioned space. area of all opaque wall assemblies: gross area of exteriorwalls measured on the exterior consisting of all opaque wallareas (including foundation walls, between-floor span
42、drels,peripheral edges of floors, etc.) that enclose conditioned space(including interstitial areas). assembly: portion of an envelope component represented byan arrangement and connection of building constructionmaterials with a specific thermal transmittance or thermalconductance. conditioned spac
43、e: an enclosed space within a building that isprovided with mechanical heating and/or cooling energy.envelope component: major section of the entire envelope,such as the opaque walls above grade, ceilings, slabs, floors,glazings, doors, or walls below grade. fenestration: all light-transmitting asse
44、mblies in a buildingenvelope, including the glazing material, sash, frame, andpermanently affixed external or internal shading devices,where such component assemblies enclose conditioned space.heat trap: a device or arrangement of the piping entering andleaving a water heater, constructed to counter
45、act the convec-tive forces of the heated water (thermosyphoning) duringstandby periods.heated slab: concrete slab-on-grade floor containing wires,cables, pipes, or ducts that transfers heat to the conditionedspace. living unit: one or more rooms designed or used as living quar-ters providing complet
46、e, independent living facilities for oneor more persons, including permanent provisions for living,sleeping, eating, cooking, and sanitation. 4 ANSI/ASHRAE Standard 90.2-2007multi-family structure: building of three stories or fewerabove grade containing three or more living units other thantownhous
47、es, including a manufactured building (modular). prescriptive design: design of a living unit or building of thesame size and occupancy type as the proposed design thatcomplies with the prescriptive requirements of this standard.The prescriptive design includes specified assumptionsconcerning shape,
48、 orientation, HVAC, and other systemdesign features. The prescriptive design is used to generate thecompliance requirement for the annual energy cost method. proposed design: design of the living unit or building to beconstructed. The design takes into account all qualities,details, and characteristics of the building that significantlyaffect the use of energy, such as construction, geometry, orien-tation, exposure, materials, equipment, and renewable energysources. sash crack: sum of all perimeters of all ventilators, sashes,
