Thermal Insulation for Energy

Efficiency in Buildings in India

• 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%

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

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

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

PU Spray roof insulation Rockwool slab wall insulation

CASE STUDY

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 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 2015.

ACRYCS .

Eicher HQ, Gurgaon

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

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 Net Zero Building

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

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

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

Thank You