Download 5B_Building-Life-Cycle-Carbon-Footprint-assessment

CARBON FOOTPRINT
ASSESSMENT OF
BUILDINGS
MANAGEMENT OF LIFE CYCLE OF BUILDINGS
Elmiira Ebrahimimahin, Muneeb Abbassi, M. Umar Riaz, Farid Ullah, Ahsan
Abid Kalim, Kim Ngan Dau, Guillermo Munoz
STUCTURE OF PRESENTATION
1. Intoduction
2. Process and Methods
3. Examples and Results
4. Comparision
Environmental degradation is the biggest threat to future man
kind.
The best way to deal with this is to stop every possible emission
that is harming our shared environment
A carbon footprint defines the total sets of greenhouse gas
emissions caused by organizations, events, products or
individuals.
When it is spoken about carbon footprint it means sum of all
emissions of carbon dioxide, which were induced by all
activities in a given time frame.
CARBON FOOTPRINT CONTRIBUTED BY
BUILDINGS
Buildings account for roughly one third of all greenhouse gas
emissions globally.
It is important to identify the sources of these emissions and
understand their relations to the construction phase and
essential in climate change mitigation.
This presentation explains the methods available for carbon
footprint assessment and relates it to all phases in the life
cycle of buildings .
LIFE-CYCLE CARBON FOOTPRINT INDICATOR
Measures the CO2 emission throughout the life cycle of building.
Uses:
Makes the choice easy for ideal structures.
Helps reduce the emissions of buildings by quantifying it.
Can be used as a design goal or criteria.
Helps to improve the Life-cycle efficiency, design goals and setting the service life
requirement for the structures.
Estimation Process
Production and
Transport Phases
Production and
Transport Phases
Demolition and
Waste
Processing and
Disposal
Phases
Construction
Phase
Use, Maintenace,Repair and Operational Phases
STANDARD MATERIAL EMISSIONS
Estimation Tool
EXAMPLES AND COUNTRIES SPECIFIC VARIATIONS
ENGINEERING
PAVILION
(AKA BUILDING
216)
INNOVATION PARK
DIAVILLA
COUNTRY
Perth, Australia
Ganjingzi District China
Pori, Finland
USAGE
University Building
University Building
Residential building,
senior center
GROSS
AREA
4020 m2
36 500 m2
3 486 m2
PERIOD TO
BE
ASSESSED
50 years
50 years
50 years
AUSTRALIA
Life Cycle Assessment approach for Carbon Footprint
Assessment.
•Mining to contruction
Identification of Hotspots
•Critical Materials
•Critical Stages/Phase
Use of Building Management System (BMS)
CHINA
STUDY RESULTS
Energy: 1369.23 MJ/m2
CO2 Em: 318.64 kg/m2
Most of the data obtained
from literature.
Eco-friendly energy sources
not included in the study
FINLAND
EN 15978 assessment
method
Construction phase:
estimation
Use phase: refrigerants
excluded
Repair and
refurbishment
excluded
Life-cycle phase
CO2 emissions
(Metric tons)
A1-A3
A4-A5
A
B1
Product phase
Construction phase
Total before use phase
B1 Use
741
62
803
-41
B2
B2 Maintenance
23
B3
B4
B5
B6
B3 Repair
B4 Replacement
B5 Refurbishment
B6 Operational energy use
–
50
–
4 610
B7
B
C1-C4
B7 Operational water use
B Total, use phase
C1-C4 Total, end-of-life phase
90
4 730
64
A-C
D
A-C Total, life-cycle
D Benefits and loads beyond
the system boundary
5 600
-243
Comparison between Countries and Approaches
Engineering Pavilion
(aka Building 216)
DiaVilla
PROCEDURE
1.
2.
3.
4.
5.
6.
Product phase
Construction phase
Use
Maintenance
Replacement
Operational energy/
water use
Not applicable
1.
2.
3.
4.
Building material
production
Building construction
Building operation
Building demolition
Collecting data from
•site measurements
•literature
Not applicable


Literature
5 600 tonnes of CO2-e
14 299 tonnes of CO2-e
581 520 tonnes of CO2-e
3 556.97 kg/ m2
15 932.05 kg/ m2
TOOL
EMISSIONS OF 1 1 456.96 kg/ m2
M2
SIMILARITIES
2.
3.
Supply of Construction
materials stage
Construction stage
Usage stage
Investigation and obtain of the
inventory
Steps in the assessment:
(i) calculation of total gases
produced; and
(ii) calculation of CO2-equivalent.
METHOD
TOTAL OUTCOME
1.
Innovation Park
Computer software
Database
Using different parameter
values and sources to
calculate
Operation stage – Concrete materials
CONCLUSION
Carbon footprint Indicator can be quantified in many ways following many
standards.
For better accuracy, calculation of all materials, processes and phases
involved (Whole life cycle) shall be considered.
Quantification can help reduce the overall emissions from construction
industry and is a positive step toward saving the degrading environment.