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

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

Warren OvertonManager, 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 Water Saving Materials and Waste Biodiversity Future Directions

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’

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)

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

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

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

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

What is comfort?

Air temperature Radiant surfaces Air movement Humidity Glare Air quality Views Colour Noise User control

Comfort is different for everybody

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

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Rm 115OutsideReception

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

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’

Lighting

Maximising daylighting Photoelectric control Motion sensors T5 and electronic ballasts Single tube fittings Recycling fluorescent

tubes Contribution to passively

cooled buildings

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

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

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

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’