Thermal Insulation for Energy Efficiency in Buildings in India
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1 Thermal Insulation for Energy Efficiency in Buildings in India
2 Insulation Benefits Stop heat / cold ingress from outside Saves on fossil fuel Reduces emission of GHG. Lower energy losses; avoid the danger of oversized heating or cooling systems that works hard to compensate for the heat or cold losses through the building envelope. Effective insulation lowers heating or cooling bills, thus no longer being affected by rising energy costs Maintains controlled temp. for longer periods. Human Comfort improves the efficiency of occupier/user. Provides fungus-free and microbe-free healthier environ, due to absence of cold walls Environmental Economical Social
3 Impact of Insulation: Composite Climate (New Delhi) Summer: Heat in-flow (May) Business-as-usual construction Roof U-value: 4.2 W/m 2.K Wall U-value: 2.1 W/m 2.K Roof: 24.6 kwh/m 2 ECBC compliant roof & wall Roof U-value: W/m 2.K Wall U-value: 0.44 W/m 2.K Roof: 2.1 kwh/m 2 Wall: 8.1 kwh/m 2 Wall: 2.3 kwh/m 2 Source: BEEP analysis Reduction in heat in-flow through roof 90% Reduction in heat in-flow through walls 70%
4 Efficient Insulation Products Fibrous /Mineral Insulation Materials : Rock wool Glass wool Slag wool Rigid Insulations Extruded Polystyrene Foam Polyurethane Foam Polyisocyanurate Foam Expanded Polystyrene Foam PU/PIR XPS EPS
5 Roof Insulation (Over deck & Under deck) Over deck Insulation: Extruded Polystyrene on Roof & Floor Over deck Insulation: PU Spray Insulation on roof Over deck Insulation: XPS & PUF slabs Under deck Insulation: Extruded Polystyrene
6 Wall Insulation (Internal & External) Dry Wall Insulation with Mineral Wool Spray Insulation- Interior Walls & Roof External Wall Insulation with Extruded Polystyrene Curtain Wall Insulation Extruded Polystyrene (External Walls)
7 Basement Insulation Various Application Methods Floor Insulation Direct to Deck Metal Roof Spray Foam Inverted Roof Concept Cavity Wall Insulation- Extruded Polystyrene
8 Various Application Methods External Wall Insulation with Rockwool slabs PU External Roof & Wall Spray Insulation
9 Various Application Methods PU External Thermal Insulation Composite System PU Roof Insulation with water proofing membrane
10 CASE STUDY PU Spray roof insulation Rockwool slab wall insulation
11 Case Studies Buildings Cont Net Zero Energy Building, CEPT University, Ahmedabad Building Specs. Project Design Team Scope of Insulation Project Status Rating No of stories: 4 Roof Area: 425 sq. m Wall Area: 1200 sq. m Architect: VasuShilpa Consultant Green Consultant: CARBSE Roof Over deck PUF Spray 45 mm thick Wall Insulation with XPS 50 mm First floor : Under deck - Insulation with XPS 50 mm Ground Floor : Over deck - Insulation with XPS 50 mm Civil work completed
12 Case Studies Buildings Cont Eicher HQ, Gurgaon Sr. No. No. of Stories Roof Area (Sqm) Wall Area (Sqm) Architect Green Consultant Scope of Insulation Project Status Rating 1 7; 1300; 3600 Romi Khosla Spectral Roof Overdeck PUF Spray 40mm thick & 40 kg/m3 density. Wall External dry wall Insulation with Rockwool slab- 50 mm thick & 48 kg/m3 density Operation al 23% heat gain from envelope Platinum Runnerup in system design category, Bry Air Awards ACREX ACRYCS.
13 Case Studies Buildings Cont Infosys Campus: Mysore, Hyderabad, Bhubaneswar, Bangalore, Kochi, Trivandrum Sr. No. No. of Stories Roof Area (Sqm) Wall Area (Sqm) Architect Green Consultant Scope of Insulation Project Status Rating 1 4-6; 10000; Hafeez Contractor EDIFICE CRN Multiple Roof Overdeck with XPS 75mm thick Wall Insulation with XPS 50mm Operationa l LEED Platinum RSP
14 Case Studies Buildings Cont GAIL, Noida Sr. No. No. of Stories Roof Area (Sqm) Wall Area (Sqm) Architect Green Consultant Scope of Insulation Project Status Rating Roof Overdeck with Extruded Polystyrene 75mm thick Operational Wall Insulation with Extruded Polystyrene 75mm
15 Case Studies Buildings Cont Tata Consultancy Services, Gandhinagar Sr. No. No. of Stories Roof Area (Sqm) Wall Area (Sqm) Architect Green Consultant Scope of Insulation Project Status Rating 1 6; 15000; TRIL TRIL Roof Overdeck with XPS 75mm thick Operation al LEED GOLD Wall Insulation with XPS 25 mm
16 Case Studies - Buildings Bayer Eco Commercial Building Greater NOIDA Sr. No. No. of Stories; Roof Area (sq.m); Wall Area (sq.m) Architect Green Consultant Scope of Insulation Project Status Rating 1 G Sankalpan Architects Pvt. Ltd, Mumbai Spectral Roof Insulation Material 75 mm Thick PIR Insulation Exterior Wall Insulation (Type 1) - 80 mm Thick PIR Insulation Exterior Wall Insulation (Type 2) mm Thick PIR insulation Complet ed Platinum the highest LEED rated 2011
17 Case Studies Buildings Cont Indira Paryavaran Bhavan, Delhi Net Zero Building Sr. No. No. of Stories Roof Area (Sqm) Wall Area (Sqm) Architect Green Consult ant Scope of Insulation Project Status Rating 1 7; 2640; 4685 Dipender Prasad Architect +CPWD Kalpakrit Roof Overdeck PUF Spray 40mm thick & 40 kg/m3 density cavity. Wall Insulation with rockwool slab- 65 mm thick & 64 kg/m3 density Operation al Platinum & GRIHA 5 Star
18 Case Studies Buildings Cont TERI University, Delhi Sr. No. No. of Stories Roof Area (Sqm) Wall Area (Sqm) Architect Green Consultant Scope of Insulation Project Status Rating 1 4; 800; 1200 Mindspace/TERI GRIHA Roof Overdeck PUF Spray 40mm thick & 40 kg/m3 density cavity. Wall Insulation with rockwool slab- 50 mm thick & 96 kg/m3 density Operation al GRIHA 5 Star
19 Case Studies Buildings Cont TERI University, Delhi Sr. No. No. of Stories Roof Area (Sqm) Wall Area (Sqm) Architect Green Consultant Scope of Insulation Project Status Rating 1 4; 800; 1200 Mindspace/TERI GRIHA Roof Overdeck PUF Spray 40mm thick & 40 kg/m3 density cavity. Wall Insulation with Rockwool slab- 50 mm thick & 96 kg/m3 density Operation al GRIHA 5 Star
20 ECBC Requirements: Prescriptive (Roofs) Maximum U-factor is prescribed for the complete roof assembly. Minimum R-value is prescribed for insulation alone (excluding air films) Recommendations made for proper placement, installation and protection of insulation Source : ECBC Code
21 ECBC Requirements: Prescriptive (Walls) Maximum U-factor is prescribed for the complete wall assembly Minimum R-value is prescribed for insulation alone (excluding air films) Source : ECBC Code
22 Thank You
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