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TRANSCRIPT
Climate map of India
Heat flow Trend
Electricity consumption by buildings in India
Effect of roof insulation
Benefits of insulation
Types of insulation
Application areas for insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
Climate map of India
Heat flow Trend
Electricity consumption by buildings in India
Effect of roof insulation
Benefits of insulation
Types of insulation
Application areas for insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
Five Climate Zones in India
ECBC refers to these and suggest different
compliance for different zones
Hot – Dry
Warm – Humid
Composite
Temperate
Cold
R value Specified for all zones (roofs &
walls)
Climate Map of India
Source: ECBC
Climate map of India
Heat Flow Trend
Electricity consumption by buildings in India
Effect of roof insulation
Benefits of insulation
Types of insulation
Application areas for insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
Heat Load Components:
Composite Climate (New Delhi)
Roof: 31%
Wall: 32%
Windows:
31%
Infiltration: 6%
*Direct heat gain from windows not accounted
Source : BEEP
Summer Heat Flow (May)
Weather Conditions
Temperature Min.: 18.7oC, Max.: 42.6oC, Avg.: ~32oC
Relative Humidity
Min.: 13%, Max.: 97%, Avg.: ~50%
Net heat flow per unit area
Roof (15 m2) 24.6 kWh/m2
Wall (47.6 m2) 8.1 kWh/m2
Window (8.4 m2) 43.3 kWh/m2
Infiltration (based on floor area 15 m2)
5.0 kWh/m2
Heat Load Components:
Warm-Humid Climate (Chennai)
Roof: 25%
Wall: 32%
Windows:
36%
Infiltration: 7%
Source : BEEP
Summer: Heat in-flow (May)
Weather Conditions
Temperature Min.: 22.5oC, Max.: 39.5oC, Avg.: ~31.5oC
Relative Humidity
Min.: 33%, Max.: 98%, Avg.: ~69%
Net heat flow per unit area
Roof (15 m2) 17.0 kWh/m2
Wall (47.6 m2) 7.3 kWh/m2
Window (8.4 m2) 44.5 kWh/m2
Infiltration (based on floor area 15 m2)
4.9 kWh/m2
Climate map of India
Heat flow Trend
Electricity Consumption by buildings in India
Effect of roof insulation
Benefits of insulation
Types of insulation
Application areas for insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
Air Conditioning
57%Lighting
22%
Ventilation fans
16%
Miscellaneous
5%
Energy Consumption by a general Air conditioned building
Source : ISHRAE
Building Energy Consumption
Total Primary Energy Supply & Use – India
(2011)
Coal 43%
Oil and Gas 29%
Nuclear 1%
Hydro+Solar
2%
Biomass+Waste 25%
TPES - 750 Mtoe
Source: International Energy Agency
Energy demand in the building sector
The building sector represents 34% of
the country’s final electricity
consumption.
Electricity use in commercial buildings
has been increasing much faster than in
other sectors of the economy.
Since 2000, electricity consumption in
the building sector has doubled
Source: Energy Statistics -2012, Ministry of Statistics and Program Implementation,
GoI & French Development Agency Paper 106, Issues in Electricity demand in USA
India Europe and China March 2011; indiatogether.org
11
Climate map of India
Heat flow Trend
Electricity consumption by buildings in India
Effect of Insulation
Benefits of insulation
Types of insulation
Application areas for insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
Typical summer day in Composite climate (Delhi)
With a 50mm Envelop insulation.
Impact of Roof & Wall Insulation
Source : Owens Corning
15.00
20.00
25.00
30.00
35.00
40.00
45.00
50.00
External
Uninsulated
Insulated
Maximum Temperature Difference is 13.9°C @ 14:hrs
School building in a typical summer day in Composite climate (Indore, M.P.)
With a roof of 40mm insulation with metal cladding
Up to 6-7oC cooler than ambient
Up to 4-5oC cooler than RCC
Impact of Roof Insulation
Source : BEEP
Climate map of India
Heat flow Trend
Electricity consumption by buildings in India
Effect of roof insulation
Benefits of Insulation
Types of insulation
Application areas for insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
• 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.
Environmental
• Effective insulation lowers heating or cooling bills, thus no longer being affected by rising energy costs
• Maintains controlled temp. for longer periods.
Economical
• Human Comfort – improves the efficiency of occupier/user.
• Provides fungus-free and microbe-free healthier environ, due to absence of cold walls
Social
Insulation Benefits
Impact of Insulation:
Composite Climate (New Delhi) Summer: Heat in-flow (May)
Roof: 24.6 kWh/m2
Wall: 8.1 kWh/m2
Source: BEEP analysis
Roof: 2.1 kWh/m2
Wall: 2.3 kWh/m2
Business-as-usual construction Roof U-value: 4.2 W/m2.K Wall U-value: 2.1 W/m2.K
ECBC compliant roof & wall Roof U-value: 0.261 W/m2.K Wall U-value: 0.44 W/m2.K
Reduction in heat in-flow through roof ∼ 90% Reduction in heat in-flow through walls ∼ 70%
Climate map of India
Heat flow Trend
Electricity consumption by buildings in India
Effect of roof insulation
Benefits of insulation
Types of insulation
Application areas for insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
Fibrous /Mineral Insulation Materials :
•Rock wool
•Glass wool
•Slag wool
Rigid Insulations
•Extruded Polystyrene Foam
•Polyurethane Foam
•Polyisocyanurate Foam
•Expanded Polystyrene Foam
Efficient Insulation Products
PU/PIR XPS
EPS
Climate map of India
Heat flow Trend
Electricity consumption by buildings in India
Effect of roof Insulation
Benefits of Insulation
Types of Insulation
Application Areas for Insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
Roof Insulation (Over deck & Under deck)
Over deck Insulation:
PU Spray Insulation on roof
Over deck Insulation: Extruded
Polystyrene on Roof & Floor
Under deck Insulation:
Extruded Polystyrene
Over deck Insulation: XPS & PUF slabs
Wall Insulation (Internal & External)
Spray Insulation-
Interior Walls & Roof
External Wall Insulation with
Extruded Polystyrene
Curtain Wall Insulation Extruded
Polystyrene (External Walls)
Dry Wall
Insulation with
Mineral Wool
Climate map of India
Heat flow Trend
Electricity consumption by buildings in India
Effect of roof insulation
Benefits of insulation
Types of insulation
Application areas for insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
Various Application Methods
Floor Insulation Direct to Deck Metal Roof
Spray Foam Cavity Wall Insulation- Extruded
Polystyrene Inverted Roof Concept
Basement Insulation
Various Application Methods
PU External Roof & Wall Spray
Insulation
External Wall Insulation with
Rockwool slabs
Various Application Methods
PU External Thermal Insulation Composite System PU Roof Insulation with
water proofing membrane
Climate map of India
Heat flow Trend
Electricity consumption by buildings in India
Effect of roof insulation
Benefits of insulation
Types of insulation
Application areas for insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
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
Case Studies – Buildings Cont…
Sr.
No.
No. of Stories
Roof Area (Sqm)
Wall Area (Sqm)
Architect Green
Consultant
Scope of
Insulation
Project
Status
Rating
1 4-6;
10000;
13000
Hafeez
Contractor
EDIFICE
CRN
RSP
Multiple Roof– Overdeck
with XPS 75mm
thick
Wall – Insulation
with XPS – 50mm
Operationa
l
LEED
Platinum
Infosys Campus: Mysore, Hyderabad, Bhubaneswar, Bangalore,
Kochi, Trivandrum
Case Studies – Buildings Cont…
Sr.
No.
No. of Stories
Roof Area (Sqm)
Wall Area (Sqm)
Architect Green
Consultant
Scope of
Insulation
Project
Status
Rating
1 17
864
6084
Roof–
Overdeck with
Extruded
Polystyrene
75mm thick
Wall –
Insulation with
Extruded
Polystyrene –
75mm
Operational
GAIL, Noida
Case Studies – Buildings Cont…
Sr. No. No. of Stories
Roof Area (Sqm)
Wall Area (Sqm)
Architect Green
Consultant
Scope of
Insulation
Project
Status
Rating
1 6;
15000;
26000
TRIL TRIL Roof– Overdeck
with XPS 75mm
thick
Wall – Insulation
with XPS – 25
mm
Operation
al
LEED
GOLD
Tata Consultancy Services, Gandhinagar
Case Studies - Buildings
Sr. No. No. of Stories;
Roof Area
(sq.m);
Wall Area
(sq.m)
Architect Green
Consultant
Scope of Insulation Project
Status
Rating
1 G+1
530.3
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) -
150 mm Thick PIR
insulation
Complet
ed
Platinum –
the highest
LEED rated
building @
2011
Bayer Eco Commercial Building Greater NOIDA
Case Studies – Buildings Cont…
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
Platinum
Eicher HQ, Gurgaon
Case Studies – Buildings Cont…
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
Indira Paryavaran Bhavan, Delhi
Case Studies – Buildings Cont…
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
TERI University, Delhi
Climate map of India
Heat flow Trend
Electricity consumption by buildings in India
Effect of roof insulation
Benefits of insulation
Types of insulation
Application areas for insulation
Different application methods
Case studies
ECBC recommendations on insulation
Content
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
ECBC Requirements: Prescriptive (Roofs)
Source : ECBC Code
Maximum U-factor is prescribed for the complete wall assembly
Minimum R-value is prescribed for insulation alone (excluding air films)
ECBC Requirements: Prescriptive (Walls)
Source : ECBC Code
BEE and IPUA (India Polyurethane Association) have collaborated the
establishment of "India Insulation Forum (IIF)“ in 2013. The objective of IIF is
to enhance awareness of using thermal insulation in building envelope and
cold chain industry for energy conservation.
IIF also coordinate advocacy activities with Government bodies & nodal
agencies.
IIF is proposed to be represented by reputed companies making different
insulation materials used for energy efficiency in Buildings.
The IIF membership is open to all concerned with building insulation,
beginning with raw material suppliers, processors & applicators, builders &
contractors, architects, regulators and end users.
India Insulation Forum (IIF)