Progress on LC CO2 assessment

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Progress on LC CO2 assessment

• Chiel Boonstra
• April 2005

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Situation
Original building
Original building
REVIVAL - building
Abandoned orginal
New low energy building
1970
2020
2004
2050
Starting point environmental performance
existing building is debited in 2004 gtgtgt No
environmental load calculated for reused parts of
the building
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Overview of progress

• consensus within the work package on the starting
  points for evaluating the CO2-assessment
• method and preconditions on how the
  CO2-assessments will be made
• questionnaire for a structured data collection
  from all sites
• use of benchmarks of newly built reference
  buildings as standard building-typology in the
  different countries
• test-model has been made to translate data
  collected in the questionnaire to the actual
  assessment

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Original building demolition new low E
building
1970
2020
2004
2050
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Original building REVIVAL building
1970
2020
2004
2050
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Comparison
REVIVAL building material use Revival
building annual energy use annual water
use extended lifetime is 25 years
Old building material use existing
building annual energy use annual water use
NEW building material use new building annual
energy use annual water use expected
lifetime is 25 years
Starting point compare annual environmental
performance expected lifetime is 25 years
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Questionnaire
REVIVAL building material use Revival building
new added materials material use for
maintenance annual energy use expected energy
use annual water use expected water
use extended lifetime is 25 years
Old building material use existing building
material use for maintenance annual energy
use average of meter readings annual water
use average of meter readings
NEW building material use new building new
added materials material use for
maintenance annual energy use derived from
national benchmarks annual water use as
Revival building expected lifetime is 25 years
Starting point compare annual environmental
performance expected lifetime is 25 years
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Summary of questionnaire

• CO2-performance is determined by the following
  aspects
• A)Material input for construction and
  maintenance
• B)Energy use
• C)Water use
• D)Installations used (material component will
  be integrated in A)

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Material section
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Maintenance
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Energy section
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Water section
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Installation section
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From data collection to analysis
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What do we add

• CO2 figures Eco-indicator 99 figures from
  SIMAPRO database
• Benchmarks on typical new building
• Conclusions on REVIVAL low E approach versus new
  low E building

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Expected results
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Next steps

• Each REVIVAL site returs in questionnaire
• Data collection in questionnaire is input for the
  impact model
• Common Task leader shall analyse the CO2
  emissions using both average European and
  national figures
• Comparisons will be made between the REVIVAL and
  new buildings
• Conclusions will be drawn from results.