Window Labelling Program for India

Transcription

1 Window Labelling Program for India Stakeholder consultation meeting : September 9, 2014, New Delhi

2 How Close or Far are we presently from Windows?

3 Window frame material Run Chart Fixed Aluminu m Slidin g Casement Single Pane Clear glass Tinted Glass Reflective Glass Fixed UPVC Slidin g Clear + Clear Wood Casement Fixed Sliding Casement Double Pane Clear + Low-e Low-e + Clear Low-e+Low e Solar reflective+low e

4 Environmental Conditions Standard used ISO U- Factor Calculation Interior Temperature Exterior Temperature Exterior Wind Velocity Radiant mean temperature exterior Radiant mean temperature interior 24 ºC (75.2 ºF) 32 ºC (89.6 ºF) 3.3 m/s (7.5 mph) Tr,m = T exterior Tr,m = T interior Solar heat gain Calculation Interior Temperature 24 ºC (75.2 ºF) Exterior Temperature 32 ºC (89.6 ºF) Exterior Wind Velocity 2.8 m/s (6.3 mph) Radiant mean temperature exterior Tr,m = T exterior Radiant mean temperature interior Tr,m = T interior Incident solar flux 783 W/m 2 (248 btu/hr-ft 2 ) Solar Spectrum ISO 9050/ 9845

5 Two Types of Wooden Fixed Frame Profile -Plotted for Different Glass Types U- Value (W/m²-⁰k) Observations RECOMMENDED: Type Of Frame Profile 2 Type Of Frame Profile E 0 CLEAR BLUE GREEN COATED COATED CLEAR CLEAR LOW-E COATED LOW- GLASS TINTED TINTED BLUE GREEN +CLEAR +LOW-E +CLEAR +LOW-E +LOW-E

6 VL T SHGC U- VALUE Material of Window Frame Fixed Windows 6 Observations 4 2 RECOMMENDED: CLEAR BLUE GREEN COATED COATED CLEAR CLEAR LOW-E COATED LOW-E COATED GLASS TINTED TINTED BLUE GREEN +CLEAR +LOW-E +CLEAR +LOW-E +LOW-E RECOMMENDED: 0.25 Max. RECOMMENDED: 0.27 Min. CLEAR BLUE GREEN COATED COATED CLEAR CLEAR LOW-E CLEAR BLUE GREEN COATED COATED CLEAR CLEAR LOW-E LOW-E COATED LOW-E GLASS TINTED TINTED BLUE GREEN +CLEAR +LOW-E +CLEAR GLASS TINTED TINTED BLUE GREEN +CLEAR +LOW-E +CLEAR WOODEN FRAMES +LOW-E +LOW-E UPVC FRAMES +LOW-E +LOW-E ALUMINIUM FRAMES

7 VL T SHGC U- VALUE Type of Window Frame For Varying Materials Frame Profile 1 ALUMINU M UPVC WOOD Observations RECOMMENDED: 3.3. RECOMMENDED: 0.25 Max. RECOMMENDED: 0.27 Min. CLEAR BLUE GREEN COATED COATED CLEAR CLEAR LOW-E CLEAR BLUE GREEN COATED COATED CLEAR CLEAR LOW-E CLEAR BLUE GREEN COATED COATED CLEAR CLEAR LOW-E COATED LOW-E COATED LOW-E COATED LOW-E GLASS TINTED TINTED BLUE GREEN +CLEAR +LOW-E +CLEAR GLASS TINTED TINTED BLUE GREEN +CLEAR +LOW-E +CLEAR GLASS TINTED TINTED BLUE GREEN +CLEAR +LOW-E +CLEAR +LOW-E +LOW-E FIXED +LOW-E +LOW-E CASEMENT +LOW-E +LOW-E SLIDING WINDOW WINDOW WINDOW

8 VL T SHGC U- VALUE Type of Window Frame For Varying Materials- Frame Profile 2 ALUMINU M UPVC WOOD RECOMMENDED: 3.3. RECOMMENDED: 0.25 Max. RECOMMENDED: 0.27 Min. Observations CLEAR BLUE GREEN COATED COATED CLEAR CLEAR LOW-E CLEAR BLUE GREEN COATED COATED CLEAR CLEAR LOW-E CLEAR BLUE GREEN COATED COATED CLEAR CLEAR LOW-E COATED LOW-E COATED LOW-E GLASS TINTED TINTED BLUE GREEN +CLEAR +LOW-E +CLEAR COATED LOW-E GLASS TINTED TINTED BLUE GREEN +CLEAR +LOW-E +CLEAR GLASS TINTED TINTED BLUE GREEN +CLEAR +LOW-E +CLEAR +LOW-E +LOW-E +LOW-E +LOW-E FIXED CASEMENT +LOW-E +LOW-E SLIDING WINDOW WINDOW WINDOW

9 Labeling? STAR Label Degree of performance Three variables U value SHGC VLT Reference Commercial / Residential Building Endorsement Label Label shows compliance Single Label communicates intent Tries to capture large market First generation building component lable

10 How do we convince market? How do we form policy? How much will we save?

11 Scenario: Energy Saving Cases BAU BAU+ Window Type Other Envelope & System Type BAU Compliant Compliant BAU BAU Compliant BAU Business as usual, Energy Conservation Building Code

12 Run Chart Hot & Dry Climate Daytime Schedule 24 Hr Schedule Warm & Humid Climate Composite Climate Moderate Climate 2000 m m m 2 20 % 40 % 60 % BAU Case BAU+ Case Case Cold Climate

13 Geometry Plan 20% WWR 40% WWR 60% WWR

14 Envelope Properties Window Glazing measures Type WWR U-Factor SHGC VLT BAU 20% BAU 40% BAU 60% (CP, HD, WH) 20% (CP, HD, WH) 40% (CP, HD, WH) 60% (Moderate) 20% (Moderate) 40% (Moderate) 60% (Cold) 20%

15 Type Envelope Properties Opaque Construction Measures Daytime Schedule 24 Hr Schedule Maximum Maximum Wall U- Roof U- Maximum Value Value Wall U-Value Maximum Roof U- Value BAU (HD,WH,CP) (Moderate) (Cold)

16 Geometry type Five Zone Square Building No. of Floors 5 Floor Height 3m BEE ECONIRMMAN Simulation Tool for Compliance Input Parameters BAU LPD EPD OD Cooling COP Infiltration Cooling Setpoint Heating Setpoint Daylight Control Model Data for Simulation sqm/person ach 24 C 18 C Yes sqm/person ach 24 C 18 C No

17 Life Cycle Cost Model Data for Simulation Life-cycle cost analysis (LCCA) is a method for assessing the total cost of facility ownership. It takes into account all costs of acquiring, owning, and disposing of a building or building system Pay Back Period Pay Back period is the period of time required for the return on an investment to "repay" the sum of the original investment CPWD Schedule of Rate for May 2012 used for BAU cases SSEF funded SoR revision document by TERI Market Survey

18 EPI (kwh/m2) % 40 % % % % % % % 60 % % % % EPI (kwh/m2-year) 20 % % 60 % BAU+ BAU m2 - Daytime BAU Additional EPI BAU+ Additional EPI 150 EPI Hot & Dry Warm & Humid Composi te Moderate Cold

19 40% 32 % 37 % EPI Savings (kwh/m2-year) 29 % 27 % * 203 * 204 * % WWR 4500 m2 Daytime * * 136 Other Savings Window Savings Hot & Dry Warm & Humid Composite Moderate Cold * BAU EPI

20 EPI Savings (kwh/m2) % WWR Hot & Dry Due to other measures Due to Windows (36.12) (56.21) (31.28) (47.32) (14.26) (24.56) Daytime 24 Hr Daytime 24 Hr Daytime 24 Hr 2000 m m m2

21 BAU BAU+ BAU BAU+ BAU BAU+ BAU BAU+ BAU BAU+ EPI (kwh/m2) Years 250 EPI & Payback m2 40% WWR Daytime EPI Payback Period Hot & Warm & Cold Dry Humid Composit Moderate Centre for Advanced Research in Building Science and Energy, CEPT e University, Ahmedabad INDIA Rajan Rawal, September 09, 0

22 Payback (Years) 40% WWR Hot & Dry Other Payback Window payback 24 Hr Daytime 24 Hr Daytime 24 Hr Daytime 2000 m m m2

23 LCC Savings 20 % 21 % 19 % 17 % 15 % 4500 m2 40% WWR Daytime Due to Other measures 14 % 11 % 12 % 9 % 7 % Due to Windows Hot & Dry Warm & Humid Composite Moderate Cold

24 21% 15% Daytime Use Building 25% 12% 24 Hr Use Building 20% 14% Daytime Use Building 24% 11% 24 Hr Use Building 20% 8% Daytime Use Building LCC Savings 25% 6% 24 Hr Use Building 40% WWR Hot & Dry Due to other measures 2000 m m m2

25 Hot & Dry Cold Hot & Dry Warm & Humid Warm & Humid Composite Moderate Cold Composite Moderate 20.0% 18.0% EPI Savings from Windows 16.0% 14.0% 4500 m % 10.0% 8.0% 6.0% 4.0% 2.0% 0.0% Daytime Schedule 24 Hour Schedule

26 Hot & Dry Warm & Humid Composite Moderate Cold Hot & Dry Warm & Humid Composite Moderate Cold 18.0% 16.0% 14.0% LCC Savings from Windows 4500 m % 10.0% 8.0% 6.0% 4.0% 2.0% 0.0% Daytime Schedule 24 Hour Schedule

27 EPI (kwh/m2-yea

28 Establish Administration of Window Labeling Program BEE NABL ROUND ROBIN Window Labeling Program Committee Recognize QA Check 5 Establish 1 Testing Facilities Technical labs Administrative Agency 3 Test Report 2 Sample Product Sample Label 4 3 Test Report 5 QA Check Site

29 Infrastructure for Window Labeling Program Laboratory Facilities Spectrophotometer with FTIR Simulation capabilities Guarded Hot Box Solar Calorimeter Site test tools Thermography Camera. Equipment for measurements such as calipers and tape measure Equipment to measure IG-Unit glass thickness and gap width. Equipment to verify the presence of Low-E and placement of the coating in an IG unit, e.g., Emissometer (capabl e of determining the surface of low emissivity coatings)

30 Simultaneous research program to facilitate policy formation Adoption of Standards Environmental Conditions Data base for product available in India Portal Online tools for selection of fenestration Affordable test facilities Innovation in test equipment Sky Models Radiation data base

31 Thank You