Component Modeling Approach. Webinar Presentation Jan. 28, 2010

Transcription

1 Component Modeling Approach CMA & The 2008 Title-24 Update Webinar Presentation Jan. 28, 2010 Agenda Overview of Component Modeling Approach Using CMA for Title-24 Compliance CMAST Overview The CMA Program Status Q/A and Discussion 2

2 CMA & The 2008 Title-24 Update Host National Fenestration Rating Council Heschong Mahone Group Presenter Mudit Saxena, Sr. Project Manager, Heschong Mahone Group Discussion Panel Nelson Pena, California Energy Commission Charlie Curcija, CARLI, Inc. Mudit Saxena Heschong Mahone Group 3 Overview Overview of Component Modeling Approach Using CMA for Title-24 Compliance CMAST Overview The CMA Program Status 4

3 Overview Overview of Component Modeling Approach 5 What is CMA? Why was CMA developed? Why use CMA? Benefits of choosing CMA CMA Software Tool (CMAST) Using CMA for Title-24 Compliance CMAST Overview The CMA Program Status Component Modeling Approach What is it? A new performance rating method from NFRC Generates accurate, project-specific performance ratings, using an approved software (CMAST) Eliminates the need for lab-testing of a product sample. 6

4 Component Modeling Approach Components are lab tested individually, upfront. Available on an online database Frames Spacers Glazing Users build their own configuration in the CMA Software Tool (CMAST), then hit CALCULATE to get: U-factor SHGC VT of the whole fenestration product 7 Why was CMA developed? In 1999 NFRC developed the Non-Residential Site-Built Certification Program 8 Referenced in California Title-24 Energy Code: 2001, 2005 & 2008 Challenges of the Program: Required lab testing a sample before obtaining ratings Limited the scope of size and configuration No real-time access to information In 2002 NFRC initiated Component Modeling Approach (CMA) Program To address some of the limitations of Site-Built program

5 Component Modeling Approach Why use CMA? 2008 Title-24, Part 6 (as of Jan 1 st 2010) approved the use of CMA for: non-residential (inc. High Rise Res) site-built fenestration Utilize accurate U, SHGC values instead of the punitive CEC Default values (Table 116 A,B or NA6) CMA makes the process simple and efficient for now, may be expanded in the future 9 Advantages of CMA Saves Time 10 Lab testing/simulation of components done in advance Faster turn-around of Label Certificate (LC) web-based Approved components do not require re-certification Approved LCs can be re-used with minor modifications Reduces Cost Eliminates lab testing of sample fenestration Increases Convenience Try out multiple options - Pre-bid report option available A single label certificate for all fenestration in a project Simplifies compliance documentation

6 Advantage of CMA cont. Increases Accuracy Compared to punitive CEC default values CMAST program can provide an EnergyPlus output file DOE2 output file is being developed Maximizes Envelope Energy Efficiency Compare energy performance of fenestration products Allows bidding, quoting and research on options Obtain credit for high performance fenestration products in Title-24 energy compliance 11 CMA Software Tool (CMAST) Core Functions Maintain database of approved component data Define projects Assemble components, and Calculate whole product ratings 12

7 CMA Software Tool (CMAST) Quick turn-around no lab testing Real-time web-based access Bidding, quoting research capability Create a CMA LC Label Certificate 13 CMA Software Tool (CMAST) Can be downloaded for a free 6-month trial Software support: cmast_support@designbuildersoftware.com Phone:

8 Overview Overview of Component Modeling Approach Using CMA for Title-24 Compliance Types of fenestration that can use CMA 2 ways to show compliance Illustrative example The CMA process CMA Label Certificate Acceptance requirement CMAST Overview The CMA Program Status 15 CMA in Title Title approved the use of CMA for Nonresidential projects inc. high-rise residential Site-built fenestration is fenestration designed to be field-glazedor field assembled using specific factory cut or otherwise factory formed framing and glazing units Any size total fenestration area irrespective of whether total fenestration area is < or > than 10,000sf 16

9 Site-built fenestration Field-fabricated fenestration Field-fabricatedis a fenestration product whose frame is made at the construction site of standard dimensional lumber or other materials that werenot previously cut, or otherwise formedwith the specific intentionof being used to fabricate a fenestration product. Site-Built is fenestration designed to be field-glazed or field assembledusing specific factory cutor otherwise factory formed framing and glazing units. Can use CMA in Title Commercial Site-Built Fenestration Three Ways to Comply with Title : 1. CEC Default Values (Tables 116-A & B) Tables 116 A & B: Worst Approach(least energy credit) 2. CEC Default Values (NA6) Calculated Thermal Performance - NA6: Barely Acceptable Approach(some energy credit) Only for <10,000sf vertical glazing area 3. NFRC Values (Site-Built or CMA) Best Approach(most energy credit) Nonresidential Compliance Manual Section 3.2 New to Title

10 Example A building is using a Viracon Solarscreen Low-E Insulating Glass (VE 4-2M) with metal frame for a curtain wall. Calculate window performance values: 19 U-factor SHGC VT Using CEC Default Tables (116-A, 116-B) Calculated Thermal Performance (NA6) CMA Center of glass values 20 Note: these values cannot be used for Title-24 compliance purposes

11 1. Using CEC Default Tables A double pane, metal frame, site-built curtain wall will get a U- factor of 0.71 from the default table Note: footnotes that adjust for Low e and airspace in 2005 have been removed in 2008 version Using CEC Default Tables A double pane, metal frame, site-built curtain wall will get a SHGC of 0.60 from the default table Updated SHGC from 0.73 to.60 to reflect that this glazing product is tinted, on

12 Comparing Results ViraconSolarscreenLow-E Insulating Glass (VE 4-2M) with metal frame CECDefault Tables 2 U-Factor 0.71 SHGC VT 0.72 Calculated Thermal Performance 3 Percent difference (from CEC Default Tables) CMA Percent difference (from CEC Default Tables) 1 Updated SHGC from 0.73 to.60 to reflect that this glazing product is tinted, on CEC Default value for VT is calculated separately using a formula in NA5 Envelope Tradeoff Procedure: VT = SHGC x Calculated Thermal Performance can only be used for projects with <10,000sf vertical glazing Using Calculated Thermal Performance (NA6) 24

13 2. Using Calculated Thermal Performance (NA6) Using Calculated Thermal Performance (NA6) U T = C 1 + (C 2 x U C ) U T = (0.872 x 0.29) U T = 0.56 SHGC T = (0.86 x SHGC C ) SHGC T = (0.86 x 0.26) SHGC T =

14 Comparing Results ViraconSolarscreenLow-E Insulating Glass (VE 4-2M) with metal frame CECDefault Tables 2 Calculated Thermal Performance 3 Percent difference (from CEC Default Tables) U-Factor % SHGC % VT % CMA Percent difference (from CEC Default Tables) 27 1 Updated SHGC from 0.73 to.60 to reflect that this glazing product is tinted, on CEC Default value for VT is calculated separately using a formula in NA5 Envelope Tradeoff Procedure: VT = SHGC x Calculated Thermal Performance can only be used for projects with <10,000sf vertical glazing 3. Using CMA 28

15 3. Using CMA 29 Comparing Results ViraconSolarscreenLow-E Insulating Glass (VE 4-2M) with metal frame 30 CECDefault Tables 2 Calculated Thermal Performance 3 Percent difference (from CEC Default Tables) CMA Percent difference (from CEC Default Tables) U-Factor % % SHGC % % VT % % 1 Updated SHGC from 0.73 to.60 to reflect that this glazing product is tinted, on CEC Default value for VT is calculated separately using a formula in NA5 Envelope Tradeoff Procedure: VT = SHGC x Calculated Thermal Performance can only be used for projects with <10,000sf vertical glazing

16 Using CMA in Title-24 Energy Compliance Sample Nonresidential Building 4,480 sf Conditioned space Climate Zone 12 (Sacramento) 900sf of window area Using T Performance approach This building does not comply (barely!) 31 32

17 33 Compliance Report without CMA Compliance Report with CMA 34

18 CMA Process DESIGN PHASE An Architect, energy consultant or a window contractor use CMAST to create a virtual model of the proposed fenestration product. A pre-bid certificate can be generated at this time for use in soliciting bids and for energy calculations by the energy consultant 35 CMA Process FIELD INSPECTION PHASE During this phase, an architect or an owners agent contacts an NFRC ACE to generate a CMA Label Certificate. Title-24 requires that the CMA Label Certificate be posted on-site for field inspection 36

19 37 CMA Process CMAST DEVELOPMENT An IA approves components (glazings, frames, spacers) before they are available for use in CMA Label Certificate An IA is also responsible for spot review of CMA Label Certificates generated by an ACE CMA Process ACE : Approved Calculation Entity Trained by NFRC on use of CMAST to ensure QA Conducts performance rating calculations using CMAST Generates the final CMA Label Certificate IA : Independent Certification and Inspection Agency Trained by NFRC on testing procedures of components Reviews simulation laboratory and test laboratory reports Reviews calculation reports prepared by ACE Conducts random trail audits of CMA Label Certificates 38

20 CMA Process -3 Forms Form ENV-1C: Certificate of Compliance NFRC CMA Label Certificate Form ENV-2A: Certificate of Acceptance 39 Form ENV-1C: Certificate of Compliance Documentation Author fills out page 1 of the ENV-1C indicating Source under Fenestration Surface Details as NFRC Plan Checker checks for completeness Plan Checker also checks that Max SHGC and Max U-factor on this form are consistent with bldg plans 40

21 Certificate of Compliance (ENV-1C) 41 Documentation Author to indicate source as NFRC NFRC CMA Label Certificate To be used in lieu of FC-1/FC-2 Fenestration Certificates for CEC s Default Values Must be available on job site for field verification NOT required to be submitted with permit application documents Responsible party verifies performance rating values Enforcement Agency collects 42

22 CMA Label Certificate Enforcement Agency Collects Form Responsible Party Verifies Form ENV-2A: Certificate of Acceptance Responsible Party completes and signs Checks the box: NFRC CMA Label Certificate under Building Information - Label Certificate Fills out and NFRC Label Certificate ID #s 44

23 Certificate of Acceptance (ENV-2A) Enforcement Agency Collects Form Responsible Party completes these fields N/A Acceptance Requirements (NA7.4.1) Responsible Party verifies that U-factor and SHGC of installed window match: NFRC CMA Label Certificate Energy compliance documentation Building plans On job site, Enforcement Agency (Inspector) collects: NFRC CMA Label Certificate ENV-2A form (signed by the Responsible Party) ENV-INST form (signed by the Window Installer) and may verify that thermal efficiencies of installed window are equal or better than values on NFRC CMA LC 46

24 Overview Overview of Component Modeling Approach Using CMA for Title-24 Compliance CMAST Overview Software overview The CMA Program Status 47 CMAST Overview CMAST is a desktop client Download and install from NFRC website (Free 6- month trial) Requires Window 6.2 and Therm6.2 Download and install from LBNL website (Free) 48

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29 57 Overview Overview of Component Modeling Approach CMA Software Tool (CMAST) Using CMA for Title-24 Compliance CMAST Overview The CMA Program Status Program Status Cost Additional resources 58

30 CMA Program Status CMA has just completed the pilot program stage and is fully implemented as of January 2010 Frame, spacer and glass manufacturers are working with accredited simulation labs to get products into CMAST Products have been approved, are available for use (as of 1/2010) Glazing: 2,067 Frame: 13 Spacer: 8 CMAST has been officially approved by the NFRC board of directors CMAST can be downloaded for a 6-month free trial from 59 CMA Costs CMA Software Usage Fees After the 6-month trial period, the CMAST software will no longer sync with the online database, and will need to be purchased Description Software License fee Additional license fees for additional users within the company Yearly maintenance fee Fee $500 (initial, one-time fee) $125 per user (initial, onetime fee) $250 plus $25 per additional user 60

31 CMA Costs CMA Label Certificate Fee A fee will be charged at the time an ACE generates a label certificate Project Size Fees 1000 sf $ ,000 sf $100 10,001 50,000 sf $500 50, ,000 sf $1000 >100,000 sf $ An ACE may also charge a fee for their service to generate Label Certificate ACE Organizations (as of Jan/2010) 62

32 Additional Resources NFRC Website NFRC Staff John Lewis: Sr. Manager, Business Dev & Outreach, CMAST Support CEC Staff Nelson Peña: Energy Commission CMA Lead, CEC Energy Hotline Q/A and Discussion When discussion is complete, please fill out our evaluation Evaluation will pop-up when you the close webinar A CMA poster will be sent to all those who complete the feedback from! Thank you! 64