THERMAL INSULATION IN THE NEW ERA
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Transcript of THERMAL INSULATION IN THE NEW ERA
THERMAL INSULATION IN THE NEW ERATHERMAL INSULATION IN THE NEW ERA
INSULATION THICKNESS IN EUROPE INSULATION THICKNESS IN EUROPE ROOFS ROOFS
INSULATION THICKNESS IN EUROPE INSULATION THICKNESS IN EUROPE WALLS WALLS
ENERGY LOSSES IN EUROPE ENERGY LOSSES IN EUROPE ROOFS ROOFS
ENERGY LOSSES IN EUROPE ENERGY LOSSES IN EUROPE WALLS WALLS
THE NEW REALITYTHE NEW REALITY
• CO2 emissions increase due to increased energy consumption.CO2 emissions increase due to increased energy consumption.
• Result is climate change. Result is climate change.
• Result is even higher energy consumption. Result is even higher energy consumption.
• Closed loop effect. Closed loop effect.
• On top of that oil prices increased On top of that oil prices increased by 80%.by 80%.
THE ONLY RELIABLE SOLUTION IS PROPER THERMAL INSULATIONTHE ONLY RELIABLE SOLUTION IS PROPER THERMAL INSULATION
• Increased energy consumption in industry due to growth is inevitable.
• Decrease energy consumption in housing by efficient thermal insulation.
CALCULATION OF OPTIMUM INSULATION THICKNESSCALCULATION OF OPTIMUM INSULATION THICKNESS
BUILDING ENERGY LOSSESBUILDING ENERGY LOSSES
10%
THERMAL TRANSPORT MECHANISMSTHERMAL TRANSPORT MECHANISMS
• Conduction through material mass.
• Convention via gas phase movement.
• Radiation.
CONDUCTION THERMAL TRANSPORTCONDUCTION THERMAL TRANSPORT
HOT(lots of vibration)
COLD(not much vibration)
Heat travelsalong the rod
CONVENTION THERMAL TRANSPORT BY GAS PHASE CONVENTION THERMAL TRANSPORT BY GAS PHASE
CONVENTION THERMAL TRANSPORT – HOME RADIATORCONVENTION THERMAL TRANSPORT – HOME RADIATOR
THERMAL TRANSPORT VIA RADIATIONTHERMAL TRANSPORT VIA RADIATION
Increased temperature
THERMAL CONDUCTIVITY λ THERMAL CONDUCTIVITY λ
MATERIAL
COPPER 330MARMOR / GRANITE 3BETON 1.8PLASTER 0.8BRICK 0.5WOOD OAK 0.2WOOD PINE 0.1
POLYURETHANE (Solid) 0.2POLYSTYRENE (Solid) 0.1
WATER 0.5
AIR ((dry / still) 0,023 *HFC 152a/134a 0.013CO2 0.014
? Kcal/m h C
IS AIR A THERMOINSULATING AGENT?IS AIR A THERMOINSULATING AGENT?
λ (dry / still) = 0.023 kcal / m h C
Thickness d (mm) λ
A 10 0.0652
I 50 0.23
R 100 0.5
d
Vertical Air Mass
Thickness d (mm) λ
10 0.0625
A I R d 20 0.12
50 0.26
Vertical Air Mass
THEORY OF THERMAL INSULATING MATERIALSTHEORY OF THERMAL INSULATING MATERIALS
Factors Affecting Factors Affecting λλ Value Of Cellular Plastic Materials Value Of Cellular Plastic Materials
1. Gas λ value (Humidity content )
2. Solid λ value
3. Cell structure
4. Percentage of closed cells
5. Diffusion of gases Chemical nature /permeability Cell size ( Small cells better than big cells) Skin Layer Geometry (Thicker = better) Conditions ( T and RH )
Types of Thermal InsulationTypes of Thermal Insulation
Cork
Glass Wool
EPS
XPS
Types of Thermal InsulationTypes of Thermal Insulation
HUMIDITY - THE WORST ENEMY OF THERMAL INSULATIONHUMIDITY - THE WORST ENEMY OF THERMAL INSULATION
28 days in water 28 days in humidity Product
λ Water λ Absorption λ Absorption (Kcal/hm°C) (Kcal/hm°C) Water (Kcal/hm°C) Water
EPS 12 Kg/m3 0.035 0% 0.048 12% 0.068 41%
EPS 25 Kg/m3 0.032 o% 0.041 6% 0.051 21%pressed
AplaXFoam XPS 32Kg/m3 0.025 0% 0.0255 0.40% 0.0272 2.26%
EFFECT OF HUMIDITY ON THE THERMAL CONDUCTIVITY OF CELLULAR FOAMS
AT START
BASIC INSULATING MATERIALSBASIC INSULATING MATERIALS
BASIC INSULATING MATERIALSBASIC INSULATING MATERIALS
Dry condition / 100mm thick
0
0.5
1
1.5
2
2.5
3
3.5
4
AplaXFoam 32kg/m3 EPS 20kg/m3 Perlite Cement Board200kg/m3
R-V
alu
e (m
2 KW
)
BASIC INSULATING MATERIALSBASIC INSULATING MATERIALS
350
300
100
AplaXFoam AplaXFoam SL EPS 20kg/m3
Str
eng
ht
- k
Pa
AplaXFoam Products and EPS
BASIC INSULATING MATERIALSBASIC INSULATING MATERIALS
The retained thermal resistance after 18 months on the exterior foundation wall.
97%
71%
58%
AplaXFoam EPS Polyurethane
Retained Thermal Resistance
How the insulation acts when exposed to moisture.
BASIC INSULATING MATERIALSBASIC INSULATING MATERIALS
98%
77%85%
AplaXFoam EPS Polyurethane
Retained Thermal Resistance
BASIC INSULATING MATERIALSBASIC INSULATING MATERIALS
How insulations acts when exposed to moisture vapors.
93%
35%
18%
AplaXFoam EPS Polyurethane
Retained Thermal Resistance
BASIC INSULATING MATERIALSBASIC INSULATING MATERIALS
How the insulation acts when exposed to freeze - thaw cycling.
98.5%
30%
5.5%
AplaXFoam EPS Polyurethane
Retained Thermal Resistance
BASIC INSULATING MATERIALSBASIC INSULATING MATERIALS
• EXPANDED POLYSTYRENE
• FIBERS (GLASS - ROCK )
• EXTRUDED POLYSTYRENE
XPS – Extruded PolystyreneXPS – Extruded Polystyrene
• Implementation of up to date technology.• Excellent thermal insulation.• Low retention of water and humidity.• High mechanic resistance.• High compression resistance.• Dimensional stability.• Homogeneous density to mass.• Resistance to the action of acids and bases.• Insensitive to temperature variations.• Compatibility to materials used in constructions (cement, gypsum).• Easy to transport, cut and applied.• Self extinguishing properties.• Clean, odorless, non irritating to skin.
PROPERTIES STABLE THROUGH TIME
SELECTION OF INSULATION SYSTEM AND MATERIALSELECTION OF INSULATION SYSTEM AND MATERIAL
• Study and analysis of the total problem.
• Selection of the best solution.
• Assurance of properties for long time.
• Incorporation of all cost affecting parameters.
THE INSULATION OF FLAT ROOFS –INVERSED ROOF THE INSULATION OF FLAT ROOFS –INVERSED ROOF
• Insulation of flat roof with the traditional method
the insulation is under the waterproofing (EPS-STONEWOOL)
• Insulation of flat roofs with the inversed roof principal
the insulation is above the waterproofing material (XPS)
THE INSULATION OF FLAT ROOFS –TRADITIONAL ROOF THE INSULATION OF FLAT ROOFS –TRADITIONAL ROOF
THE INSULATION OF FLAT ROOFS –INVERSED ROOF THE INSULATION OF FLAT ROOFS –INVERSED ROOF
DAY NIGHT TEMP VARIATION FOR MEMBRANE DAY NIGHT TEMP VARIATION FOR MEMBRANE
Temperature Variation Day Night
-20
0
20
40
60
80
1 2 3 4 5 6 7 8 9 10 11 12
Month
Tem
pera
ture
DAY NIGHT
FAQ FAQ FAQ FAQ FAQ FAQ FAQ FAQ FAQ FAQ FAQ FAQ FAQ FAQ
• For a facade what should I use: XPS or EPS or stone wool ?• Is polyurethane a bad insulating material ?• Is cellular cement a good insulating material ?• Is stone wool better than XPS as a thermal insulating material?• Is XPS a sound insulating material?• Is stone wool a good sound insulating material?• For a flat roof what thermal insulation should I use ?
Thank you!