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Insulated buildings - a new gate way to reduction of carbon foot printsTRANSCRIPT
Insulating Buildings: The Magical Wand for Energy
Management
Presented By:Ankur Mahajan
Department of Electrical EngineeringNational Institute of Technical Teacher’s Training &
Research, ChandigarhEmail: [email protected]
Carbon Dioxide Emission in India
19901991
19921993
19941995
19961997
19981999
20002001
20022003
20042005
20062007
20082009
20102011
20120
0.5
1
1.5
2
2.5
Metric tons of Carbon dioxide per capita
Insulating Buildings
Reduces the cooling requirements by 10% as compared to conventional buildings.
Improves the Mean Radiant Temperature by 28% thereby increasing human comfort.
Insulating Material - Characteristics
PerformanceInstallation method & QualityCost per square feetResistance ValueLow MRTEffect on the occupants & environment
Heat Transfer from Conventional Building Wall-
April
1 3 5 7 9 11 13 15 17 19 21 23 1 3 5 7 9 110
10
20
30
40
50
60
70
80
West WallEast WallSouth WallNorth Wal
Time
Watt/m2
Heat Transfer from West Side Wall with Different Insulating Materials
- April
1 3 5 7 9 11 13 15 17 19 20 21 23 1 3 5 7 9 110
10
20
30
40
50
60
70
80
Concrete Wall4 inch Brick Wall4 inch masoury WallExterior Insulated Wall
Watt/m2
Time
Type of the Material Used
Heat Absorbed (watt/m2)
Concrete Wall 76
Brick wall 73
Masoury Wall 38
Exterior Insulated Wall 5
Interior Insulation of Envelope
Interior Insulation absorbs much less than Exterior Insulation
Results – Reduction of Condensation Thermal Bridge
Comparison of Heat Transfer from Conventional & Insulated Building
Wall-April
1 4 8 11 14 17 20 23 2 5 8 110
10
20
30
40
50
60
70
80
4 inch Conventional WallExterior Insuated WallInterior Insulated Wall
Time
Watt/m2
Heat Transfer from Roof with different Materials- April
1 3 5 7 9 11 13 15 17 19 21 230
20
40
60
80
100
120
140
Concrete Roof 4 inchConcrete TilesConcrete Tiles with Air SpaceConcrete Tile with Al FoilConcrete Tile with 9mm Bubble FoilConcrete Tile with 9 inch Glasswool
Time
Watt/m2
Conclusion
Insulated Envelope will absorb approximately 9 times less heat than conventional building envelope.
Reduces the electricity consumption by 50% approximately for cooling applications.
Interior Insulation is better than exterior insulation but has ill- effect on the occupants.
Reduces the requited size of the air conditioning system.
Future Scope
Study of new insulating materials with high R- value.
Combination of different materials to come up with a low cost outcome.
