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Green building at ANU – A ‘warts and all’ assessment Warren Overton

Green building at ANU – A ‘warts and all’ assessment Warren Overton Manager, Energy and Sustainability Office Facilities and Services. Content of Presentation. Construction at the ANU ESD Policy Development ESD Policy Implementation Building Fabric and Interior Comfort (HVAC) Lighting

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Green building at ANU – A ‘warts and all’ assessment Warren Overton

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  1. Green building at ANU – A ‘warts and all’ assessment Warren Overton Manager, Energy and Sustainability Office Facilities and Services

  2. Content of Presentation • Construction at the ANU • ESD Policy Development • ESD Policy Implementation • Building Fabric and Interior Comfort (HVAC) • Lighting • Water Saving • Materials and Waste • Biodiversity • Future Directions

  3. Construction at the ANU • Current period of increased construction activity • External design teams • External project managers • Internal stakeholder comment on design • Fixed budgets • ‘Value Management’

  4. Recent ‘Green’ Buildings • Ian Ross Building – Natural ventilation (1999) • NCEPH/CMHR Extensions – Natural ventilation (2003) • Medical School – Hybrid (2003) • Coombs Extension – Natural Ventilation (2004) • JCSMR – ‘Adaptive’ Airconditioning (Construction) • AITC – Hybrid (Design) • Copland Extension – Hybrid (Design)

  5. ESD Policy development • Review of other standards – LEED, BREEAM, etc. • Simple • Defensible – 10 yr payback • Measurable • Proven • Stakeholder input • High level endorsement • Potential move to a national rating system

  6. ESD Policy • Short & simple – 4 pages • Specific requirements rather than a rating • Uses adapted PCA energy guidelines • Design teams are required to submit responses against each criteria – submissions vary greatly in detail and quality

  7. ESD Policy implementation • Get involved early in the project • Become part of the design team • Agree on methods of assessment (payback, other lifecycle issues) • Follow up on project after completion - POE

  8. Building Fabric • Designed to provide a comfortable and productive workplace • Majority of energy use in ANU buildings is space conditioning • Space conditioning requirements are dictated by the building fabric • Policy to discourage air conditioning wherever possible whilst still maintaining comfort

  9. What is comfort? • Air temperature • Radiant surfaces • Air movement • Humidity • Glare • Air quality • Views • Colour • Noise • User control Comfort is different for everybody

  10. Designing for comfort • What metrics should we use? • ASHRAE and OH&S standards • Psychometric charts • Predicted mean vote (PMV) • Explaining to the clients • Measuring comfort • Productivity benefits

  11. Natural Ventilation Systems • Perfect for the ACT climate • Mass, mass, mass • Demonstrated to work – most of the time • Require user interaction and or BMS control • A different kind of comfort • No immediate, direct control • Have yet to get one 100% • Hybrid options

  12. User Reactions • Variable • You only ever hear from those who are unhappy • ‘First class citizens get air-conditioning’ • ‘It is not my job to control the temperature’ • ‘Why do we have to be the guinea pigs?’ • ‘This is the best building I have ever worked in’

  13. Lighting • Maximising daylighting • Photoelectric control • Motion sensors • T5 and electronic ballasts • Single tube fittings • Recycling fluorescent tubes • Contribution to passively cooled buildings

  14. Water Saving • Drought & pricing has caught people’s attention • Waterless Urinals (UTS) • 6 l/min showerheads • Rainwater capture • Process cooling • Grey and Blackwater capture- Living Machines • Recycled effluent use on ovals

  15. Materials and Waste • Demolition waste – 80% recycling target • Construction waste – much harder (training & policing) • Low VOC materials • Recycled content materials • How to specify • Finding suppliers • Lifecycle assessment • Waste facilities in buildings

  16. Biodiversity • Biodiversity Survey to define ‘BMA’s • Explaining what biodiversity is and what value it has • Preservation of existing habitat • Using new landscape to create habitat • Encouraging aquatic habitats

  17. Future Directions • Revision of current guidelines – adoption of another standard such as Green Star • Assessment of projects undertaken to learn from our experiences – write case studies, POE • Improvement of internal processes to ensure involvement – design teams • Constant ongoing learning to improve our designs • Shift the culture of users to embrace ‘green buildings’

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