TWIGA

Insulation Solution from TWIGA for Hotel Projects-Cost Saving

Fire and Health Safety issues

U.P.TWIGAJanuary 2010

TWIGA TWIGA Introduction of TWIGA

• A leading manufacturer of Glass Wool Insulation (green building material) in

India for more than 30 years.

• An ISO 9001 Company.

• A licensee of ISOVER-Saint Gobain.

• Total Capacity : 18000 MT per annum. Capacity addition is underway to meet

future demands.

• Three manufacturing units- Ambernath (near Mumbai) Sikandrabad (U.P),

Ghaziabad (U.P)

• Production line for Flexible Duct & Preformed Pipe Section has been set up at

its existing manufacturing facilities.

• In 2009 Twiga has received FM approval for its Glass wool products for use in HVAC and Building insulation.

TWIGA Topics Today

• Basics about insulation.

• Performance of insulation—Glass Wool as a Green Building Material

• Glass wool Application in Hotel projects :

-> Duct Wrap-> Duct Acoustic-> Insulated Ventilated Facade-> Dry wall/Partition Wall

• Case Study on Cost and Performance

• ECBC/ ASHRAE Compliance

• Health Safety of Glass wool

• Product Profile

TWIGA Basic Thermal Sc: Fourier Law of heat conduction

CONDUCTION :Heat flow without physical movement of the medium.

• The rate of heat flow ( Q in W/m2)

-directly proportional to the temperature difference ( T1-T2,where T1=hot face temp. T2=Cold face temperature)

-Inversely proportional to the thickness of the material (L)

-Depend on the nature of the material and its temperature ( K-thermal conductivity)

Q = K.A (T1-T2) / L

or, Q/A = (T1-T2) / (L/K). or, Q/A = (T1-T2) / Ror, Q/A =U.(T1-T2)

What is thermal insulation?

The material resist the heat flow when subjected to a temperature differential across it.

[ R= L/K ]

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Better Insulation implies to :

- Lower K-value (Property of the material)

Basic information of a product and it have to be a tested data. It is independent to physical dimension of the product.

- Higher R-value (Property of the Object or Product and/or System)

Can be derived from the eqn. R= L / K.- Lower U-value (Property of the system)

Can be derived from U = 1 / (R1+R2+…)

T1 T2

Q

K

QLRso R1 R2 R3 Rsi

∑R=Rso+R1+R2+R3+Rsi

U = 1/ ∑R

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PERFORMANCE OF INSULATION

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Thermal Performance

Acoustic Performance

Fire Performance

Environmental Performance

To Achieve specified R-value/ U-value of the system.

To control condensation

Noise Absorption: To meet specified NRC value

Noise IsolationTo meet specified STC value

Non Combustibility

Non toxicity

zero Spread of flame

Limited fire propagation index

Very low Embodied energy

Recycled content( without compromising on performance)

Re-usability

Waste Management

TWIGA

GLASS WOOL–A GREEN BUILDING MATERIAL

• Features:– Substantial reduction in energy conservation.– Zero Ozone Depleting Potential– Minimum VOC– Excellent Fire Properties– Uses Abundant & Renewable Raw Materials of nature. – Lowest embodied energy compared to other insulation

materials.

TWIGA

GLASS WOOL –A GREEN BUILDING MATERIAL

• TWIGA Products:

– For HVAC • Twiga Duct Wrap – TI-1500/25, TI-1500/50 with FSK or Tough guard

Laminations • Twiga Flexible Duct• Twiga Duct Board• Twiga Duct Acoustic Liners – TI-3000/12, or TI-3000/25 with Fiberglass

Tissue Facing.

– For Building Envelope• Over deck Insulation: High density GW Blocks with crimped surface.• Under deck Insulation: Twiga Insul – Slabs/Rolls TI-1500/75 with Aluminium

Foil/ Polypropylene facing.• Partition Walls: Twiga Insul TI-2000/50.• Cavity Wall: Twiga Insul TI-3000/50.• External Wall: Twiga Insul TI 3000/50.• False Ceiling: Twiga Insul TI-1500/50.• Spandrel Insulation for Structural Glazing: TI-3000/50 BGT.

TWIGA

GLASS WOOL –A GREEN BUILDING MATERIAL

Contribution of Glass wool to LEED Rating:

LEED Credit Category LEED Credits Available Glasswool Contribution Energy and Atmosphere – Optimize Energy Performance.

1-10 Points depending on percent reduction of energy used.

Helps reduce building energy consumption by 20 to 30%.

Material and Resource – Recycled Content

1-2 points depending on post consumer, post industrial recycled content.

Glasswool can be recycled. In house scrap wool is being recycled.

Material and Resource – Regional / Local Manufacturing

1-2 points depending on whether 20% of total building material is locally manufactured (within 800 KM radius).

Two manufacturing units of Twiga in Uttar Pradesh and Maharashtra help to provide these points.

Innovation and Design Process 1-4 points depending on the innovation applied

Acoustic benefit in buildings, fiberglass wool as concrete reinforcement.

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Glass wool application in Hotel projects

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Optimizing HVAC thru. Duct insulation

Twiga Glass Wool insulation

R= 0.76 m2. K/W to 1.5 m2. K/W

Thickness : 25, 50 mm

Density: 24 Kg/cu.m

Lamination: FSK, Tough-guard

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Duct Acoustic

• Available in Slabs- Density :32 and 48 Kg/m3

- Thickness :12mm, 25 mm,50 mm

- Facing : Glass Tissue, Glass cloth.

Glass wool NRC [100 to 8000 Hz.]

12kg/m3-50 mm thick 0.7516kg/m3-50 mm thick 0.9224kg/m3-50 mm thick 1.1232kg/m3-50 mm thick 1.2448kg/m3-25 mm thick 0.7248kg/m3-12 mm thick-BGT faced

0.66

Acoustic reductionAcoustic reduction∆∆L (in dB/m) = 1.05 x L (in dB/m) = 1.05 x αα1.4 x (P/S)1.4 x (P/S)αα=NRC value @ certain frequency=NRC value @ certain frequencyP=Duct Perimeter (in m)P=Duct Perimeter (in m)S=Cross sectional area of duct (in m2)S=Cross sectional area of duct (in m2)

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Elaboration on Insulated Ventilated Façade / Rain screen

• A complex system of wall insulation where a ventilated air gap is ‘constructed’ after an external layer of glass wool insulation on masonry wall.

• It is a protective covering of the building skin hence it increases building life.

• Provide good insulation value to meet required energy performance.

• Superior aesthetic, yet easy to install.

• As per ECBC 2007 the U value of Opaque wall should be 0.44 maximum.

• ( U-0.43,can be achieved by using 24kg/m3 density of Glass wool with 60 mm thickness)

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Ventilated Facade

Glasswool External Insulation

Elements of VF

Fixing illustration

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Dry Wall Construction/Partition Wall

• Light weight partition system

• Metallic framework (Studs, Floor and Ceiling Channels)

•Plasterboards fixed to framework using self tapping screws

• Finished with a jointing compound and paper tape for a monolithic finish.

•High thermal and acoustic performance with Glass wool insulation.

TWIGA Examples of Drywall systems

1. Dry lining systems

2. Interior partitions systems

3. Apartment partition walls

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Case study on cost and performance of Insulation with reference to ECBC 2007/ASHRAE 90.

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Case Study for HVAC Insulation

1. Required insulation performance as per Energy Conservation Building Code-ECBC-2007/ASHEAR.90.1 2004:

Thermal resistance (R-Value) minimum for Supply Air Ducts R= 1.4 m2 deg./WThermal resistance (R-Value) minimum for Return Air Ducts R= 0.6 m2 deg./W

2. Fire Properties :BS 476: Part 4 – Non CombustibleBS 476: Part 5 – Not Easily Ignitable BS 476: Part 6 – Fire propagation Index (I<12) BS 476: Part 7 - Surface spread of flame (Class 1)

3. Suggested Material for Duct Wrap:Fiberglass Wool Insulation : 24 Kg/m3.Closed Cell Foam Nitrile Rubber : 60±2 Kg/m3Closed Cell Crosslink Polyethylene : 30±2 Kg/m3

Twiga-Fiberglass wool Closed Cell Nitrile / XLPE foam

Thermal Conductivity 0.033 W/m.K @ 25ºC 0.034 W/m.K @ 20ºC

TWIGA

Particulars Twiga-Fiberglass wool Closed Cell Nitrile / XLPE foam

25mm 9mm

Application area Supply Air Duct Return Air Duct Supply Air Duct Return Air Duct

Quantity of insulation material (sqm.)

15000 18000 15000 18000

Total Cost of insulation material

Rs.30 Lacs Rs.66 Lacs

0.26m2.degC./W

Price per sqm. with FSK (exclusive of duties)

Rs.112/ Rs.74/ Rs.225/ Rs.180/

Rs.13Lacs Rs.32 Lacs

Saving on typical project of 33,000sqm.

Rs.36 Lacs

Fire properties as per BS476:Part 4

Non Combustible Does not meet BS 476 part 4- ( Combustible)

Fire properties as per BS476:Part 5

Not Easily Ignitable Does not meet BS 476 part 5 -( Easily Ignitable)

Cost of insulation material

Rs.17Lacs Rs.34Lacs

0.76m2.degC./W

Thickness of insulation material

50mm 13mm

Thermal resistance (R-Value)

1.52 m2.degC./W 0.38m2.degC./W

ECBC-2007 / ASHRAE90.1-2004

Comply as per ECBC-2007/ ASHRAE 90.1-2004.

Do not comply as per ECBC-2007 /ASHRAE 90.1-2004

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Particulars Twiga-Fiberglass wool Closed Cell Nitrile / XLPE foam

Biological Inorganic. Does not encourage growth of mold or fungi

Organic. Support mold growth. It also has impact on the shelf /aging

Smoke & Fumes Does not emit dense smoke and toxic fumes

Release dense smoke and Toxic fumes.

Fire properties as per BS476:Part 7

Class 1 Class 1

Fire properties as per BS476:Part 6&7

Class ‘O’ Typically does not conform to Class ‘O’

Temperature Resistance -195 to 230 ºC -40 to 110 ºC

TWIGA ECBC Compliant vs. Cost

ECC Compliant

Supply air duct for exterior and un-vented attic without roof insulation

112

815

225

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

Glass Wool-50mm(Industry

practice)

Nitrile Rubber-52mm Nitrile Rubber-13mm(Industry

practice)

Duct thermal Insulation Options

R-va

lue(sq

.mK/W)

0

100

200

300

400

500

600

700

800

900

Prod

uct C

ost(R

s./sq.m)

R-value(sq.m.K/W)Product Cost(Rs./sq.m) Salient Features :

Excellent Cost advantage with Glasswool :

80 % saving on product cost for ECBC compliant duct insulation

The common industry practice for NR does not conform to ECBC

Moreover Glass Wool conforms to stringent Fire requirements like non combustibility, Class ‘O’. it is also FM Approved insulation.

ECBC Compliant ECBC

Non Compliant

Return Air duct for exterior, un-vented attic without roof insulation & Supply duct for unvented attic with roof insulation, unconditioned space

74

410

180

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Glass Wool-25mm(Industrypractice)

Nitrile Rubber-25mm Nitrile Rubber-9mm(Industrypractice)

Duct thermal insulation options

R-v

alue

(sq.

m./W

)

0

50

100

150

200

250

300

350

400

450

Prod

uct C

ost(R

s/sq

.m)

R-valueProduct Cost

ECBC Compliant ECBC

Non Compliant

TWIGA HVAC InsulationSupply air duct in un-vented attic without roof insulation.

R-value (sq.m.K/W)

Product cost (Rs./sq.m)

Glass Wool-50mm 1.52 112

Nirile rubber-52 mm

1.4 815

Nitrile rubber-13mm

0.35 225

Return duct in un-vented attic without roof insulation; supply; supply duct in unvented attic with roof insulation and unconditioned space

R-value (sq.m.K/W)

Product cost (Rs./sq.m)

Glass Wool-25mm 0.76 74

Nirile rubber-25 mm 0.68 410

Nitrile rubber-9mm 0.24 180

ECBC Compliant

ECBC Non

ECBC Compliant

ECBC Non CompliantCompliant

Salient Features :

Excellent Cost advantage with Glass Wool : 80 % saving on product cost for ECBC compliant duct insulation .The common industry practice for NR does not conform to ECBC.

Moreover Glass Wool conforms to stringent Fire requirements like non combustibility, Class ‘O’. it is also FM Approved insulation.

TWIGA

Prestigious Hotel Projects with Glass wool insulation

•Projects Location Projects Location

DelhiDelhiDelhiDelhiDelhiDelhiDelhiDelhiDelhiHyderabadHyderabadKolkataKolkataKolkataKolkataAgraAgra

AgraMaduraiTrivandrumOotyCochinChennaiChennaiChennaiChennaiGurgaonGurgaonJaipurKhajurahoMumbaiMumbaiMumbaiMumbai

Inter ContinentalHyatt RegencyLe MeridienMarriott Welcome HotelMaurya Sheraton HotelTaj Groups of HotelRadisson HotelHotel AshokaBest WesternHotel Taj KrishnaITC Fortuna KatriyaHindustan InternationalHyatt RegencyTaj BengalGrand Hyatt Holiday InnJaypee Palace

Clarks ShirazLe MeridienHotel AshokTaj MalabarPark SheratonHotel RadissonHotel TridentHotel Ramada RajparkHotel Balaji OberoiTaj GVKPiccadillyFortune HotelHotel BristalITC Hotel,Parel Trident HotelJ.W.MarriottCharlet Hotel

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Health & Safety issues with Glass wool Insulation

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Some Facts

1. In Oct.2001 IARC (International Agency for Research on Cancer) re evaluated 1988 IARC assessment of glass fiber and removed glass, rock and slag wool from its list of substances “possibly carcinogenic”.

2. WHO’s report on SVFs 1988: “Fibers were not a cause for adverse health effect in building occupants”.

3. TWIGA introduced the manufacturing of Bio-soluble glass fibers in India under technical guidance of ISOVER SAINT GOBAIN.

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Other Related Studies

• NAIMA (North American Insulation Manufacturer Association) study in 1997 :

-Impact of SVF’s (synthetic vitrified fiber) on Indoor Air Quality.

-Total 205 samples collected from 51 commercial and residential building

-21 outdoor samples collected from 19 outside building.-Result : air borne respirable fiber level is in the building

sample is very low and primarily organic, where the SVF and total inorganic fibers could not be calculated as the amount is negligible. SVF were found only 2 in 205 samples examined.

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Cont.

●Duke University Medical Centre Study in 2001*:-HVAC system is not a significant source of glass fiberemission.-Fiber count in supply diffuser was very low averagevalue being 0.00015 fiber/cc.

Based on all these studies, it is quite conclusive that Fiberglass wool is completely safe and don’t have any health hazard.

*Source : NAIMA

TWIGA

PRODUCT PROFILE

TWIGA TWIGA Product Portfolio

Glass Wool Pipe Sections

Flexible Ducts Fiber Glass Tissue

TWIGA TWIGA

Twiga Insul for thermal & acoustic insulation

Product General Properties Thermal Properties

• Colour : yellow.• Comes in roll, boards or

slab form.• DensitY : 10 – 130 Kg/m3.• Thickness: 12- 100 mm.• Maximum width : 1200

mm.• Facing options : Aluminum

foil (FSK) / polypropylene, fiberglass tissue, and glass cloth.

• Glass fiber chemically inert in nature & is inorganic.

• Stable in composition from -195oC to 230oC.

• Slightly alkaline with pH value very close to 7.

• Has no impurities. Free from shots, sulphur and cloride.

• Non corrosive to metal.• Do not support any mold

growth.• Bio soluble in nature.

• Low thermal Conductivity(K-value)

• HighThermal resistance (R-value).

TWIGA TWIGA

Twiga Insul for thermal & acoustic insulation

Fire Properties Acoustic Properties

• Non combustible as per BS 476 part 4.

• P class as per BS 476 part 5.Not easily ignitable.

• Very low Fire propagation indices as per BS 476 part 6

• Class 1 as per BS 476 part 7.Surface spread of flame is NIL.

• Class ‘O’ as per BS 476 part 6 and 7.

• Non toxic-toxicity index 0.65 only as per BS 6853.Also conforms to NES 713/802(Naval standard).

• Non oxygen depleting (Oxygen index 68).

• High STC value with various systems (For internal/external Walls, Metal Roof etc.)

• High NRC value:

Glass wool NRC [100 to 8000 Hz.]

12kg/m3-50 mm thick 0.75

16kg/m3-50 mm thick 0.92

24kg/m3-50 mm thick 1.00

32kg/m3-50 mm thick 1.05

48kg/m3-50mm thick 1.20

TWIGA

TWIGA: A technical Licensee of-

Technical Advantage•World Famous TEL technology

•Bio-soluble Glass Fiber

•Excellent thermal and acoustic properties

•Excellent Fire properties

•Eco Friendly

SAINT GOBAIN

FOUNDER MEMBER OF-

IMO CERTIFIED BY-

TWIGA THANK YOU

TWIGA