thermal insulation for buildings - · pdf filevhigher air conditioning loads and increased ......

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ROLE OF THERMAL INSULATION IN BUILDINGS

A TECHNICAL PRESENTATION BY

LLOYD INSULATIONS (INDIA) LTD

THERMAL INSULATION FOR THERMAL INSULATION FOR BUILDINGSBUILDINGS

INDIA IS A TROPICAL COUNTRY

v Ambient Temp varying from 25 Deg.C TO 45 Deg.C and in some places even 50 Deg.C

v Winter Temp varying from 20 TO 100C and in some places even Sub Zero Temperatures.

v High Humidity v ary ing f rom 60 to 98 Percent


HIGH AMBIENT & HIGH HUMIDITY RESULT IN

Uncomfortable working Conditions

v Lower Productivity

THERMAL INSULATION OF BUILDINGS

Typical Buildings in India


ROOF CONSTRUCTIONv Reinforced Cement Concrete (RCC) in 100mm to

150mm

v Pre-cast Roof Element having low Thermal resistance and Finished With Water Proofing


Walls are Usually 125mm to 225mm BrickwallWith Plaster

v To Cater to the Building Load and Wind Load

v With Windows /Glazing resulting in Heat Ingress

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ROOF OF BUILDINGSv Receive the maximum amount of Radiant heat

v Allow large quantities of heat to enter the Building Envelope


Resulting in:v Increase in temperature inside the Buildings

v .Inside Temperature is likely to go above than the Outside Ambient

v Higher Air Conditioning Loads and increased running time of the Compressors

v Higher Energy cost


High Heat Incid ence and Lo w Thermal Resistan ce of RCC/Brick W alls Calls for

‘INSULATION OF ROOF AND WALLINSULATION OF ROOF AND WALL’’

THERMAL INSULA TION FOR BUILDINGS

Building Energy Consumption

Air conditioning - 57 %Lighting - 22%Ventilation Fans - 16%Miscellaneous - 5%

ENERGY EFFICIENCY IMPROVEMENT METHODS

n Building energy efficiency includes two parts: envelop (insulation for roof, external wall, window, door and ground floor) and maintenance (energy efficiency improvement for lighting, air conditioner, water heater, green power acquirement such as solar power and wind power etc.).

n The role of thermal insulation is to improve Building Envelope's Energy efficiency.

IMPORTANCE OF THERMAL INSULATION

IN BUILDINGS

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Thermal Insulation is an essential part of all Buildings and performs many functions.

Energy Conservation – Reduces the heating / cooling load

Human Comfort – improves the efficiency of the workmen

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THERMAL INSULATION

Human Comfort in buildings depends, of course upon the proper design of Heating / Cooling equipment.

Efficient operation of these equipment however depends on the effectiveness of the Thermal Insulation.

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THERMAL INSULATION

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THERMAL INSULATION

The Design of Insulation requirements for buildings is not straight forward as the calculation of economic thickness for pipeline / equipment

Almost all Building material provide some resistance to heat flow and thermal insulation is a part of the system

Hence the design solution for the thermal insulation of buildings must be based on comparison of the system

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THERMAL INSULATION

Ø Location and Weather conditions

Ø Orientation of the building

Ø Wind / breeze

Ø Height of Ceiling

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THERMAL INSULATION

Factors influencing the design of insulation of building

Factors influencing the design of insulation of building

Ø Proportion of Glassed Areas, Door / Window / Ventilator openings

Ø Shading

Ø Whether the building is only heated or heated or cooled

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THERMAL INSULATION

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Because of the above factors, The

Thermal Conductance given by “U”

value forms the basis for design and

becomes the only governing factor for

selection of insulating mater ial

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THERMAL INSULATION

Thermal Conductance “U” is

defined as the reciprocal of the

total thermal resistance

U = 1/R

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THERMAL INSULATION

Thermal resistance R is given by

R = 1/fo + 1/fi + l/k

Where

fo –Outside surface conductancefi – Inside surface conductancel –Thickness of materialK – thermal Conductivity of the material

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THERMAL INSULATIONTHERMAL INSULATION FOR

BUILDINGSECBC NORMS

Energy Conservation Building Codes is Applicable to Buildings or Building

Complexes that have a connected Load of 500KW or a Contract Demand of

600KVA or greater

BUILDING INSULATION AND ENERGY CONSEVATION

ECBC NORMS

R – 2.1 / 2.35R – 3.5 / 2.2Cold

R – 2.1 / 2.0R – 2.1 / 1.8Moderate

R- 2.1 / 2.1R - 3.5 / 2.1Warm and

Humid

R- 2.1 / 2.1R - 3.5 / 2.1Hot and Dry

R- 2.1 / 2.1R - 3.5 / 2.1Compostie

Code requiring R-value of Insulation alone Roof / Wall

m2 deg. C / W

Code requiring R-value of Insulation alone Roof / Wall

m2 deg. C / W

Daytime use buildingOther Building Types

24-hour use buildingsHospitals, Hotels,Call

CentersClimate Zone

BUILDING INSULATION AND ENERGY CONSEVATION

ECBC NORMS

U- 0.409 /0.352U–0.261/0.369Cold

U- 0.409 /0.397U–0.409/ 0.431Moderate

U- 0.409 / 0.440U- 0.261/ 0.440Warm and

Humid

U- 0.409 / 0.440U-0.261/ 0.440Hot and Dry

U- 0.409 /0.440U- 0.261 /0.440Compostie

Code requiring U-value of Assembly Roof / Wall

w/m2 deg. C

Code requiring U-value of Assembly Roof / Wall

w/m2 deg. C

Daytime use buildingOther Building Types

24-hour use buildingsHospitals, Hotels,Call

CentersClimate Zone

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BUILDING INSULATION AND ENERGY CONSERVATION


Thermal Insulation SystemsCombination of Materials ,Ancillaries ,Protective

Finishes and Application Methods.

v Compatible with relative Accessories/Provisions

v Properties of Insulation Materials

vv BEST INSULATION MATERIAL MAY FAIL IF BEST INSULATION MATERIAL MAY FAIL IF NOT PROPERLY APPLIED.NOT PROPERLY APPLIED.


Thermal Insulation Material and Finishes chosen should Withstand the Vagaries in the Ambient and Humid Conditions in Tropical Indian Environment and Specifications be made to suit the Location.


Criteria For Selection Of Insulation Material

v Thermal C onducti vity

v Thermal Diffusivity

v Compressi ve Strength

v Water Absorption

v Fire Properties Viz Incombustbility/Fire Resistance

v Application

THERMAL INSULATION FOR BUILDINGS

BUILDING INSULATION OPTIONS

nRoof InsulationUnderdeck InsulationOverdeckInsulation

nWall InsulationInternalExternal

nFalse Ceiling


BUILDINGS OPTIONS

RCC BULDINGS

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OVERDECK INSULATION

APPLICATION OF INSULATION DIRECTLY OVER SLOPED RCC FOLLOWED BY WATER PROOFING & PROTECTIVE COVERING TREATMENT, FEATURING :

v PRE FORMED INSULATION BOARDS

v IN-SITU TECHNOLOGY


IMPORTANT PROPERTIES TO RECKON WITH v ADEQUATE COMPRESSION RESISTANCE

v LOW WATER ABSORPTION

v RESISTANCE TO HIGH AMBIENT TEMP.

v LOW THERMAL CONDUCTIVITY


Insulation Materials OptionsOVERDECK INSULATION

nSpray Polyurethane FoamnExtruded PolystyrenenPolyurethane/PIR SLABnExpanded Polystyrene


SPRAYING PUF / PIR FOAM


PROPERTIES OF SPRAYED IN-SITU PUF/PIR FOAM

v CLOSE CELL CONTENT

v 40-45 KG/M3 DENSITY

v NEGLIGIBLE WATER ABSORPTION

v JOINTLESS FOAMING

v LOW THERMAL CONDUCTIVITY

SPRAY PU FOAM & MEMBRANE WATERPROOFINGSPRAY PU FOAM & MEMBRANE WATERPROOFING

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SPRAY PU FOAM & MEMBRANE WATERPROOFINGSPRAY PU FOAM & MEMBRANE WATERPROOFING THERMAL INSULATION FOR THERMAL INSULATION FOR BUILDINGSBUILDINGS

FIXING OF PRE-FORMED SLABS


SLABS FIXED ON ROOF

SPRAY PU FOAM & LIQUID APPLIED WATERPROOFING


ADVANTAGES OF OVERDECK INSULATION v DOES NOT INTERFERE WITH INSIDE ON

GOING ACTIVITIES.

v JOINTLESS COVER TO THE ROOF SURFACE

- THERMAL BARRIER AGAINST HEAT IN FLUX

- PROTECTOR TO THE CONCRETE SURFACE

FROM FLUCTUATING EXTERNAL TEMP.

v VERY FAST APPLICATION


DISADVANTAGEOVERDECK INSULATION NEEDS TO BE TREATED WITH PROPER WATER PROOFING TREATMENT ENSURING NO WATER INGRESS INTO THE INSULATION. IN CASE THE WATER PROOFING TREATMENT IS DAMAGED, THE WATER INGRESS INTO THE INSULATION MAY LEAD TO COMPROMISING ITS INSULATION PROPERTIES.

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UNDERDECK INSULATIONPROVIDING INSULATION AS A CONTACT TREATMENT TO THE INNER SURFACE OF ROOF


Insulation Materials Options

UNDERDECK INSULATIONnRockwool Slabs/RollsnGlass wool Slabs/Rolls

UNDER DECK INSULATION


DISADVANTAGES OF UNDERDECK INSULATION

v ROOF SLAB IS SUBJECT STRESS DUE TO CHANGE IN TEMPERATURE DIFFERENCES IN THE AMBIENT

v INTERFERENCE WITH FALSE CEILING AND HVAC SYSTEM


INSULATION OVER FALSE CEILING

PLACING FIBROUS INSULATION PACKED IN POLYTHENE BAGS ON THE TOP OFSUSPENDED CEILING



False Ceiling Insulation

nRockwool Slabs/RollsnGlasswool Slabs/Rolls

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INSULATION OVE R FALSE CEILIN G BOA RDS



Wall InsulationnRockwool Slabs/RollsnPIR/Polyurethane FoamnExtruded Polystyrene


RESIN BONDED MINERALWOOL SLABS/ROLLS

SLAB ROLL


RIGID INSULATION

POLYISOCYANURATE SLABS OF DENSITY 36+2 KG/M3 AS PER IS : 12436, THICKNESS 30MM.


WALL INSULATIONFIXING OF WOODEN BATTENS OR GI CHANNEL AND PLACING HIGH DENSITY NON-COMBUSTIBLE MINERALWOOL SLABS OF DENSITY 48/64/96 KG/M3 AS PER IS:8183, 50MM THICKNESS IN BETWEEN AND FINALLY COVERED BY RIGID BOARDS FASTENED TO THE FRAME WORK.

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WALL INSULATION


GI CHANNEL FRA ME W OR K


WOODEN FRA ME W OR K


WALL INSULATION


WALL INSULATION


WALL INSULATION WITH WOODEN FRAME WORK & ROCKLOYD SLABS

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EXTERIOR THERMAL INSULATION AND COMPOSITE SYSTEMS

(ETICS)

CREATING TOMORROW'S SOL UTIONS

LLOYD INSULATIONS (INDIA) LTD.,

ETICS -A multi-layered exterior insulation system used on both commercial & residential buildings, provide superior energy efficiency and much greater design flexibility than other cladding products. • Thermal Insulation System• Simplest and most Reliable way of Insulation• Most Useful for Retention of Energy and Increase the Energy Efficiency• Two Ways to Retrofit Insulation i. e. Exterior and Interior

ETICS:MOST RELIABLE EXTERIOR INSULATI ON SYSTE M

1)Masonry2)Adhesive3)Polyurethane/PIR Foam4)Basecoat5)Fiber mesh6)Top Coat

LLOYD INSULATIONS (INDIA) LLOYD INSULATIONS (INDIA) LTD.,LTD.,


NOR MAL THIC KNESS OF V ARIOUS LAYERS :1) Adhesive : It is Dispersible Polymer powder modified

cementacious dry mixTotal thickness varies from 4mm to 10mm depending on uniformity of Substrate.

2) Insulation : It is Polyurethane Foam ( PU ) or PIR 3) Base Coat : It is Dispersible Polymer powder modified

cementacious dry mix Total Thickness will be 4-6mm


4)Fibre Glass mesh : 165 GSM which is to be impregnated inside base coat (reinforced) to get additional strength and to prevent cracks.

5) Texture Coat: It is Dispersible Polymer powder modified cementacious dry mix It can be in various colours by mixing pigments and also in various designs.

Total Thickness vari es from 12mm to 14mm


>0.08 N/mm228 days normal climate + 2 days water + 7 days normal climate

>0.03 N/mm228 days normal climate + 2 days water + 2 hours drying

>0.25 N/mm228 days normal climateBond strength adhesive / Insulation product

>0.25 N/mm228 days normal climate + 2 days water + 7 days normal climate

>0.08 N/mm228 days normal climate + 2 days water + 2 hours drying

>0.25 N/mm228 days normal climate

Bond strength substrate / adhesive

>0.08N/mm2or failure in the insulation product instead

After testing on the rig

>0.08N/mm2or failure in the insulation product instead

After 28 days normal climateBond strength base coat / Insulation

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ADVA NTAGES OF OUTSIDE INS ULATION :n Outstanding Thermal Insulationn Reduction in cooling costn Optimum Use of the Wall’s cooling Storage Capacityn Save Space Inside the Roomsn Great Design Flexibility for facadesn Increase in value of the Building

• ETICS is attached to outside face of exterior walls with adhesive and mechanical anchors. • ETICS is installed directly at construction site by hand by professional plastering contractors• ETICS is an assembled system and not retail product.• ETICS can also be made as prefabricated panels

HOW ETICS IS INSTALLED

LLOYD INSULATIONS (INDIA) LLOYD INSULATIONS (INDIA) LTD.,LTD.,

Typical applications of PUR ETICS in China

SPF ETICSSlab Stoc k

ETICS

Curta in Wal l

ETICS

PUR ETICS

Pouring On-s iteETICS

Prefabric ated

ETICS

ETICS bas edon sprayappl iedPoly -ure thanerigid foam

ETICS bas edon Poly -ure thanes lab s tockboard

ETICS forc urtain wal lins ula tionappl ication

ETICS bas edon pouringon-s ite Poly -ure thanerigid foam

ETICS of pre-fabric atedPoly -ure thaneins ula tionboard

Sys tem Structure

Subst r at e

Leve li ng m or t ar f or Su bst r at e2

Spr ay a ppl ie d P U r ig id f oam

I nt er f acial r en der

Level in g m or t ar

Fib er gl ass m es h

Pr ot ect i ve m or t ar

Top f i nis h

Typical applications of PUR ETICS in China- SPF ETICS

Sys tem Structure

Subs trate•

I ns ulationLay er••

Sy s tem Struc ture

Interfac ia lLay er

Ž

Level ing &

Protec tiv e Lay er•

Top Coat•

Sk etc h M ap

•

•

Ž

•

•

Top f i ni sh

Pr ot ect i ve m or t ar( + Fi ber gl ass

m esh whennecessar y)

I nt er f aci alr ender

SPFSubs t r at e

Typical applications of PUR ETICS in China-SPF ETICS

ETICS With Spray Polyurethane Foam

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Wall ready to receive Spray PU Foam

SPRAY PU FOAM IN PROGRESS



I Layer SPRAY PU FOAM Completed

SPRAY PU FOAM And LevellingMortar Applied

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SPRAY PU FOAM And LevellingMortar Applied Base Coat Mortar Applied

Fibre Glass Mesh Reinforcement being Applied

Base Coat II layer being applied

Finish Coat AppliedETICS Completed Awaiting Finish Coat

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Typical applications of PUR ETICS in China- Slab Stock ETICSSys tem s tructure

Subs trate

Top fin is h

Fiber glass mes hProtec tive m ortar

PU R s lab st ock b oar d

Lev eling m ortar for Subs tra te

Typical applications of PUR ETICS in China- Slab Stock ETICS

Sys tem Structure

Subs trate•

Sy stem Struc ture

AdhesiveLay er •

Insu la tionLay er Ž

Protec tiveLay er •

Top Coat•

Sk etch M ap

Top co atingSub strateAd h esiv emo rtar

Pro tectiv e mo rtarPUR slab

+ Fib er g lasssto ck bo ard

mesh

ETICS PU SLABSApplication of Interfacial Render

Application of Adhesive MortarAdhering the Slabs on to the WAll

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Slabs adhered to the wall Application of Base Coat

Application of Fibre Glass Mesh Fibreglass Mesh in Position

Final Base Coat in placeCross sectional View of ETICS PU SLABS

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FINISH COATTypical applications of PUR ETICS in China- Curtain Wall ETICS

Sys tem Structure

Subs trateSpray appl ied PU rig id foam

Interfac ia l render

Protec tive m ortar

Adhesion frame

Top fin is h

Typical applications of PUR ETICS in China- Curtain Wall ETICS

Subs trate•

System Structure

Insu la tionLay er••

In terfac ia lLay erŽ

Protec tiveLay er•

Top Coat•

Sub strate SPF In terfacialren d er

Pro tectiv e mo rtar(+ Fib er g lassmesh wh enn ecessary )

Top fin ish

•

•

•

Ž•

Sys tem Structure

ROAD MAP FOR ENERGY EFFICIENCY IN BUILDINGS

n As is being followed in our neighbouringcountry let us aim at improving the energy efficiency by 50 % with 2000 as the base year

n This is possible by bringing in Mandatory Rules and Standards for Thermal Insulation of Buildings

Thank you for your attentionB J KUPPUSWAMY

For further details please mail [email protected]

thermal insulation for buildings - · pdf filevhigher air conditioning loads and increased ......

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