Download - Building Energy Codes 101 - An Introduction
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Building Energy Codes 101 - Building Energy Codes 101 - An IntroductionAn Introduction
Department of EnergyEnergy Efficiency & Renewable Energy
PNNL-SA-72577
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● Purpose: To provide a basic introduction to the varied and complex issues associated with building energy codes.
● Authors: The U.S. Department of Energy’s (DOE’s) Building Energy Codes Program (BECP), with valued assistance from the International Codes Council (ICC) and the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).
● Audience: Anyone with an interest in building energy efficiency, including state energy officials, architects, engineers, designers, and members of the public.
● For more information on building energy codes, refer to the BECP website at www.energycodes.gov.
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U.S. Energy Use
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Code Benefits
Reduced energy consumption by approximately 0.5-quadrillion Btu per year by 2015,and 3.5-quadrillionBtu per yearby 2030.
Rising cost savingsmore than $4 billion
per year back inhomeowners’ pockets by 2015, a figure that could rise to over $30 billion per year by 2030
Reduced CO2 emissionsby roughly 3 percent in terms of
the projected national CO2 emissions in 2030.
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Code Challenges
•Code Development• Reaching consensus on the details
•Code Adoption• Not automatic in many states
•Code Compliance• Learning to design using new standards and techniques• Implementing new requirements at the jobsite• Providing staff and resources to plan, review, and inspect.
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Building Energy Codes
ASHRAE Standard 90.1
International Energy Conservation Code
State and Locally Adopted Codes
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• Building EnvelopeBuilding Envelope
• MechanicalMechanical
• Service Water HeatingService Water Heating
• LightingLighting
• Electrical PowerElectrical Power
What Do Building Energy Codes What Do Building Energy Codes and Standards Cover?and Standards Cover? For both residential and commercial:For both residential and commercial:
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Residential Codes
Federal
83 MEC
89 MEC
77 MCEC
92 MEC
95 MEC
93 MEC
00 IECC
98 IECC
90.1-1999
03 IECC
90.1-2004
10 CFR434
FEDCOM I
10 CFR434
FEDCOM II
90.1-2001
90A-1980
86 MEC
Commercial Standards
10 CFR435
FEDCOM 0
90.1-1989
10 CFR 435 COSTSAFR
FEDRES
Codified 90.1-1989
06 IECC
90.1-2007
09 IECC
90-1975
10 CFR 435Subpart A
10 CFR433
Energy Codes & Standards History
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Model Codes & Standards
International Energy Conservation Code (IECC)
Type
Residential & commercial buildings; mandatory, enforceable language
Model Energy Code
Title ApplicabilityCommon Versions
2003 IECC2006 IECC2009 IECC
90.1-200490.1-2007
Energy Standard All buildings except residential 3 stories or less
ASHRAE Standard 90.1 Energy Efficient Design of New Buildings Except Low-Rise Residential Buildings
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Baseline: IECC and ASHRAE 90.1
Both IECC and ASHRAE 90.1 apply, ASHRAE 90.1 likely usedBoth IECC and ASHRAE 90.1 apply, ASHRAE 90.1 likely used
IECC appliesIECC applies
Both IECC and ASHRAE 90.1 apply,either used to complyBoth IECC and ASHRAE 90.1 apply,either used to comply
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Code Development –Open and Public
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IECC Code Process
CodeChange
ProposalsSubmitted
CodeDevelopment
Hearing, PublicTestimony,
Committee Vote,Possible
Assembly Vote,ProposalsSubmitted
Public CommentPeriod
Challengesof Code
DevelopmentHearing
ProposedModifications
Final ActionHearing,Public
Testimony,Final Vote of
GovernmentalMembers
New CodePublished andDistributed byDate Certain
New CodePublished andDistributed byDate Certain
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ASHRAE 90.1 Process
CommitteeProposesStandardChanges
PublicReview
andComment
CommentAccepted
CommitteeApproval
ASHRAEBoard ofDirectorsApproval
ANSIApproval
NewNewStandardsStandards
or Addendaor AddendaPublishedPublished
SubstantiveChanges
Appeal ofCommitteeApprovalupheld denied
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Energy Code Adoption Can occur at the state or local level in one of two ways: •directly through legislative action (state level)•by regulatory action throughstate or local agencies.
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Typical Adoption Process,State and Local
ProposalUndergoes
Public ReviewProcess
Results AreIncorporated
into theProposal
ApprovingAuthorityReviews
Legislation orRegulation
After Filed orApproved,
Code BecomesLaw
StateAppointed Council or Committee
LocalBuildingOfficials
Mayor
StateEnergyOffice
CityCouncil
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• Wall, floor, ceiling• Doors, windows• Heating, ventilating,
and cooling systems andequipment
• Lighting systems andequipment
• Water-heating systemsand equipment
How Energy Codes AffectBuilding Design and Construction
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Codes and Architecture
Increased insulation levels andefficient windows coupled with an efficient lighting system will reduce the heat loss from the building and heat gain from the lighting system.
Increased insulation levels andefficient windows coupled with an efficient lighting system will reduce the heat loss from the building and heat gain from the lighting system.
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For InstanceThe residential builder may use
2” X 6” studs(instead of 2” X 4”)for walls in a home
so that higher levelsof insulation can be
installed to meetthe code.
Codes and Construction
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Building Envelope
The energy code specifies the insulation levels in the floor,
ceiling, and walls and requirements intended to seal
the building against air leakage and moisture migration.
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Heating, ventilating, and cooling
Energy codes providecriteria for the
size and efficiency of HVAC systems and equipment.
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Lighting and Electrical
The energy codes provideminimum criteria to support
efficient, effective lighting—and in commercial spaces—
lighting controls.
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Water Heating
Energy codes provideminimum criteria to
effectively heat anddeliver hot water.
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Going Above and Beyond Code
Yukon Kuskokwim Health Corporation, Community Health Building, Bethel, AK
ASHRAE Advanced Energy Design Guide for Small Office Buildings, 2004
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Energy Code Enforcement and Compliance
Enforcement, or making sure Enforcement, or making sure that a building is in compliancethat a building is in compliancewith an energy code, is the last with an energy code, is the last
step in the building process.step in the building process.
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Codes and the Building Process
Save Energyand Money
Reduce CarbonEmissions
LocalGovernment
LocalGovernment
LocalCodeLocalCode
ArchitectsBuilders andEngineers
BuildingConstruction
Review PlansReview products, materialsequipment specificationsReview tests, certificationreports, product listingsInspect building and itssystems during constructionEvaluate materialssubstituted in the fieldInspect prior to occupancy
StateGovernment
StateGovernment
StateCodeStateCode
C O M P L I A N C E
BuildingEnergy Code
BuildingEnergy Code
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DOE and Federal Support includes:
1. Participation in development andupdating of codes andstandards
2. Provision of financial andtechnical assistance toadopt, implement, andenforce codes and standards.
1. Provide compliancetools.
2. Provide information andresources, complianceproducts, training, and energycode related news.
DOE Support
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REScheck™
DOE’s residential compliance software
(Windows or Mac version)
Desktop Software ToolsDesktop Software Tools Web-Based ToolsWeb-Based Tools
No-cost, easy-to-use software that will demonstrate compliance.
www.energycodes.gov/software.stm
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COMcheck™
DOE’s commercial compliance software
(Windows or Mac version)
Desktop Software ToolsDesktop Software Tools Web-Based ToolsWeb-Based Tools
No-cost, easy-to-use software that will demonstrate compliance.
www.energycodes.gov/software.stm
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Adopt, Implement, Enforce – Resources
www.energycodes.gov
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BECP is developing guidelines and tools to use in measuring compliance with building energy codes, which:
• Foster uniformity and objectivity in measuring compliance rates
• Eliminate need for each state to develop itsown procedures and tools
• Provide tools that states can adapt for their own preferred use
• Collect additional data and support related activities.
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Adopt, Implement, Enforce – Resources
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Thank You!
www.energycodes.gov
Additional resources, including:•Code Notes•Technical Assistance to Users• Energy Codes 101•Setting the Standard•Training Materials•Resource Center
Are available through theBuilding Energy Codes Program
For more information, contact:Jean Boulin, Program ManagerPhone: 202-586-9870Email: [email protected]
PNNL-SA-72577