National Fenestration Rating Councils Component Modeling Approach Southern California Edison Custome

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National Fenestration Rating Councils
Component Modeling ApproachSouthern California
EdisonCustomer Technology Application
CenterAugust 20, 2008
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Topics

• Introduction to NFRC
• Background
• Overview of the CMA Procedure
• Current CMA Program Development
• CMA Certification Program
• Benefits
• Application to California Energy Code (Title 24)
• CMA Software Development
• CMAST Core Functionality
• CMAST Demonstration

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NFRCs Mission

• NFRC develops and administers comparative energy
  and related rating programs that serve the public
  and satisfy the needs of its private sector
  partners by providing fair, accurate and
  credible, user-friendly information on
  fenestration product performance.

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Why rate products?

• Helps energy code development by providing
  standardized methods for determining the energy
  performance of fenestration products
• Provides a level playing field for comparing
  fenestration products provides baseline for
  product improvement
• Provides accurate third-party information on
  fenestration performance
• Promotes energy efficiency
• Promotes international harmonization
• Helps consumers make informed decisions

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Energy Factors Rated by the NFRC
VT (Visible Transmittance)
U-factor (thermal transmission)
SHGC (Solar Heat Gain)
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NFRC Standards

• NFRC 100 - Procedure for Determining U- Factor
• NFRC 200 - Solar Heat Gain Coefficient and
  Visible Transmittance Procedure
• NFRC 300 - Solar Optical Properties
• NFRC 400 - Air Leakage Procedure
• NFRC 500 - Condensation Resistance Procedure
• Various test methods

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NFRC Programs

• Product Certification Program (PCP) - Establishes
  rules for NFRC certified ratings
• Laboratory Accreditation Program (LAP)- Maintains
  credibility of simulation and test labs
• Certification Inspection Agency Program (CAP)
  Maintains credibility of third-party
  certification program
• Compliance and Monitoring Program - Enforces
  program requirements provides assistance to
  building officials
• Research and Education

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Why is Third-Party Certification So Important?

• A 3rd party independent certification program
  provides the checks and balances necessary to
  ensure design intent and performance!

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Third Party Certification
FENESTRATION PRODUCER Drawings Bill of
Material
Plant Inspection Reports Quality Control
Reports
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Rating the Energy Performance of Fenestration
Systems in Architectural Applications

• The Need
• Transforming the non-residential fenestration
  market to better utilize energy efficient
  systems.
• The Answer
• A standardized energy performance rating for
  fenestration systems in architectural
  applications.

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Rating the Energy Performance of Fenestration
Systems in Architectural Applications

• Energy relevance
• Non residential buildings consume 15.4 quads of
  primary energy - 16 of all energy used in U.S.
• For space heating and cooling 1.1 quads (50
  heating 60 cooling)
• For lighting 3.8 quads (Daylighting could
  reduce consumption by 25)

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Rating the Energy Performance of Fenestration
Systems in Architectural Applications

• Energy relevance
• Whats a quad?
• Quadrillion Btus
• 1,000,000,000,000,000 Btus
• Barrel of oil 5,800,000 Btus

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Rating the Energy Performance of Fenestration
Systems in Architectural Applications

• Global Warming relevance
• Natural gas creates 117 pounds of CO2 for every
  million BTUs
• Coal creates 212 pounds of CO2 for every million
  BTUs
• Nonresidential buildings contribute over 1.5
  billion tons of carbon into the atmosphere every
  year!

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Rating the Energy Performance of Fenestration
Systems in Architectural Applications

• Non-Residential Relevance
• Only 30 of all nonresidential buildings use high
  performance (low-e) windows
• Single glazed units still being installed

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Rating the Energy Performance of Fenestration
Systems in Architectural Applications

• Non-Residential Relevance
• So the question is Why?
• No industry-accepted rating procedure
• Lack of labels/label certificates
• Lack of enforcement
• No simple marketing tools
• No liability for builder/architect downstream

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Rating the Energy Performance of Fenestration
Systems in Architectural Applications

• Non-Residential Relevance
• Why?
• No free-exchange of information
• Access to information about product performance
  is critical to market transformation

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Rating the Energy Performance of Fenestration
Systems in Architectural Applications

• The Need
• An industry accepted standard and rating program
  for determining and communicating the energy
  performance of fenestration products and systems
  in non-residential buildings

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Background- Site-Built Program

• Non-Residential/Site-Built Certification Program
  developed in 1999.
• Designed to address field-glazed or assembled
  products.
• Built upon existing software and programs
• Established standardized rating
  size/configuration used for curtain wall and
  storefront systems
• Label Certificate
• Responsible Party

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Site-Built Program

• Referenced in Title 24 - 2001 and 2005
• Successfully met the need of code officials
• Challenges of the program
• Required testing a specimen before getting the
  ratings
• The size and configuration limited scope
• Real time access to information

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Component Modeling Approach

• To address limitations of the Site-Built program,
  the Component Modeling Approach (CMA) procedure
  was developed in 2002.
• CMA program currently under development 2009
  implementation targeted.

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CMA Overview

• Component performance data used for obtaining
  overall product performance.
• Three primary components used
• Glazing Glazing optical spectral and thermal
  data from the International Glazing Database
  (IGDB)
• Frame Thermal performance data of frame
  cross-sections
• Spacer Keff of spacer component geometry and
  materials

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Overview - CMA Procedure
Glazing component
Spacer component
Frame component
Glazing infill / Center of Glazing assembly
Frame system / Frame assembly
Spacer system / spacer assembly
PRODUCT CONFIGURATION Overall product rating
calculation
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CMA Product Certification Program (CMA-PCP)

• Performance ratings of whole fenestration
  products in accordance with the NFRC 100.
• Components shall have performance values that are
  NFRC-approved and maintained in the NFRC Approved
  Component Library database.

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CMA-PCP

• An Approved Calculation Entity (ACE) shall
  calculate the values for the fenestration system
  using CMA software and the approved component
  libraries.
• A Specifying Authority seeking product
  certification under this CMA-PCP shall contract
  with an ACE to obtain an NFRC Label Certificate
  for a project.

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CMA-PCP

• Once the energy indices for a fenestration
  system(s) has been generated for a specified
  project, the Specifying Authority signs an NFRC
  License Agreement and is then issued a CMA Label
  Certificate for the project which lists the
  certified systems and their performance ratings.
• Label certificate data will be maintained online
  in the CMA Certified Products Directory for
  public access.

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Licensing

• The Specifying Authority is the entity who
  specifies the fenestration products and systems,
  as well as suppliers to be used on a given
  non-residential project in order to meet design
  and performance requirements.

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Quality Assurance

• Approved Calculation Entity (ACE) Review
  Calculations performed by the ACE shall be
  subject to review by an NFRC-licensed
  Certification and Inspection Agency (IA).
• Documentation Trail Audit IA conducts a
  documentation trail audit of the certified
  fenestration system(s) to ensure that the systems
  listed on the label certificate are reflective of
  the actual systems installed for a particular
  project.

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CMA Benefits

• User-Friendly Tool Established component
  libraries and user-friendly CMA software
  application allows general user to
• assemble components,
• configure whole fenestration products, and
• obtain performance calculations
• Building Energy Analyses Fenestration energy
  performance data for projects can be readily
  exported for use in bidding, energy analysis,
  determining specifications

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Benefits continued

• Code Compliance Label Certificate issuance is
  expeditious and cost-effective
• Product Certification Provides for a uniform,
  standardized, and accurate rating methodology
  that incorporates third-party oversight and
  quality control requirements
• Information Access A public directory of
  approved components, certified products, and
  other label certificate information is available
  on line for quick and easy access and verification

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California Energy Code

• The California Energy Commission proposes to
  adopt changes to the Building Energy Efficiency
  Standards contained in the California Code of
  Regulations (CCR), Title 24, Part 6 (also known
  as the California Energy Code) and associated
  administrative regulations in Part 1.
• The proposed amended standards will go into
  effect in 2009.

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Code continued

• An NFRC Label Certificate or Temporary Label is
  required that lists the U-factor and SHGC of
  non-residential fenestration products/systems in
  accordance with NFRC 100 and 200 rating
  procedures.
• For manufactured fenestration products the
  label certificate or temporary label shall list
  air leakage in accordance with NFRC 400 rating
  procedures.

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Code Continued

• For additional information
• http//www.energy.ca.gov/title24/

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CMA Software Development

• CMA Software development project began in May
  2007.
• Fensize, the precursor of the CMA software was
  designed in 2002 by current CMA software
  contractor, D. Charlie Curcija.
• A prototype of the CMA Software Tool (CMAST) will
  be ready for testing in June 2008.

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CMA Software Development

• CMAST Alpha Testing (client based) June/July
  2008
• Beta testing (network/synchronization) -October
  2008
• CMAST deployment - January 2009
• Six-month Pilot Project to conclude August
  2009
• Full implementation - August 2009

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CMAST Functionalities

• Performance data of the three primary components
  are used for obtaining whole product performance
• Has client-based and web-based functionalities
• Allows for access to a central database of
  NFRC-approved components maintained on a central
  web-based server
• Provides energy performance ratings at NFRC
  standard size and actual size.
• Allows for the saving and storage of data
• Frame and glazing assemblies
• Spacer Keff
• Fenestration systems
• Project information

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CMAST Core functions

• CMA software tool will be able to
• Maintain libraries of component data
• Define projects
• Assemble components, and
• Calculate whole product ratings
• Assemblies are generated in the software prior to
  whole product calculation
• Center of Glazing assembly
• Spacer and edge seal assembly
• Frame assembly

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CMAST-Component Assemblies

• Center of glazing assembly is generated from
  glazing components data, geometry (i.e., gap
  width) and gap fill (UC, SHGCC, VTC are
  calculated)
• Spacer assembly is generated from spacer
  components and any applicable sealants/desiccants
  (keff is calculated)
• Frame assembly is generated from frame components
  (product layout and associated areas are
  generated)

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CMAST Whole Product Calculation

• Whole products are then calculated from the
  assemblies
• Frame assembly selected first
• Glazing infill (center of glazing assembly) is
  selected and placed in frame assembly openings
  (glazing infill locations)
• Spacer system (spacer and edge seal assembly) is
  then selected and placed in glazing infill
• Whole product performance is calculated after all
  three assemblies are specified

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CMAST Output

• Project data and fenestration system performance
  data for a project can be exported for use in
  bidding, energy analysis, determining
  specifications, etc.
• Product Certification and issuance of NFRC Label
  Certificate for code compliance.
• Public directory of approved components,
  certified products, and other label certificate
  information.

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CMAST Demo