Green Buildings in Operation

ISCN 2014 Conference

Colin Reiter Director, Asset Services

The University of Melbourne

sustainablecampus.unimelb.edu.au/

Our philosophy

The University of Melbourne is committed to embedding sustainability in all aspects of its research, teaching and campus operations.

It seeks to enhance the

experience of students and staff through the provision of a

world class sustainable campus environment.

Green Building Certification models across the Globe

LEED - Leadership in Energy & Environmental Design USGBC – U.S. Green Building Council

Green Building Certification models across the Globe

BREEAM - Building Research Establishment Environmental Assessment Methodology •  country-specific (European) and

international Schemes •  best practice in sustainable

building design, construction and operation

•  1 to 5 Stars awarded

Green Building Certification models across the Globe

GBCA – Green Building Council of Australia Building rating tools •  Design & As Built (presently being combined)

•  Sector-specific versions – Education, Healthcare, Industrial, Office …

•  Green Star – Performance •  assesses the operational performance of buildings

Green Star Communities •  Precinct-wide sustainability rating tool •  University of Melbourne is:

•  a Gold Sponsor of tool development •  has a registered project in pilot phase

- main Parkville campus of 159 buildings over 66 hectares (163 acres)

Green Star Scoring

Design & Construction Costs for Green Buildings

http://www.worldgbc.org/activities/business-case/

Green Buildings – the University of Melbourne

Commitment to minimum design ratings through the Green Building Council of Australia

–  5 Star Green Star for all new building developments –  4 Star Green Star for all major building upgrades

Faculty of Business & Economics

The Peter Doherty Institute Melbourne Brain Centre

Faculty of Architecture, Building & Planning

•  Chilled beam technology

•  46% less energy than comparable building

•  blackwater recycling plant treats 30,000 litres per day

•  Mixed-mode ventilation system

•  co-gen plant reduces emissions by 55%

•  50,000-litre rainwater tank

•  Presently undergoing rating, construction due to complete end 2014

•  Extensive LED lighting

•  Laminated timber beams

•  750,000-litre rainwater tank

•  co-generation plant saves 2,475 tonnes CO2 per year

•  100,000-litre rainwater tank

•  Greywater filtration system on roof

Faculty of Architecture, Building & Planning

Faculty of Architecture, Building & Planning

•  $114,750,000 •  17,000m² •  5 Star Green Star •  Aurecon: Building Services, Project Managers & Façade Consultants •  Design Brief

!  Commitment to innovation !  Best available techniques in sustainable design, and for use of materials, energy, air

and water. !  Act as a laboratory for control, adjust and monitor environmental systems !  High level of occupant comfort

•  Built Pedagogy !  Communicate ongoing research

•  Aurecon Building Services !  Mechanically assisted natural ventilation !  Air tight construction (pressure tested) !  Modular services for each space (outside air thru heat recovery and facades) !  Large central atrium with under floor air distribution !  Completed a detailed Co/Tri-generation Study (not enough carbon reduction) !  Thermal Pile Ground source heat pump system serving small area !  Ground source system can operate in multiple modes, provides maximum research

benefit

Building Performance Analysis

Two comparisons of electricity consumption in 5 star Green Star buildings and regular buildings of similar size and business activity

5 Star Melbourne Brain Centre cf. Bio 21

5 Star Business & Economics cf. Law

Building   Internal  GFA  

2013 elec MWh   Variance  

Melb Brain Centre  

229,896  sq  )  (21,358  m2)   4779   -35%  

Bio 21   248,119  sq  )  (23,051  m2)   7321    

Building   Internal  GFA    

2013 elec MWh   Variance  

Bus & Eco   274,426  sq  )  (25,495  m2)   2324   -29%  

Law   267,257  sq  )  (24,829  m2)   3257    

Green Star Buildings Design vs. Performance

Lessons learnt so far – Good Points –  Energy consumption & efficiency

better than older buildings => lower emissions and energy cost

–  Building fabric, façade, glazing and insulation superior compared to older buildings

–  Water consumption efficiency better than older buildings => lower water cost

–  Building technology such as Building Management Systems and lighting control systems provide valuable facilities management tools

Green Star Buildings Design vs. Performance

Lessons learnt so far – Challenges –  Innovative elements like Blackwater

treatment plants, cogeneration, chilled beams and passive ventilation systems can be problematic

–  Higher maintenance costs to manage the technology systems

–  Design energy modelling targets difficult to achieve

–  Analysis of data from sub-metering of electricity and water usage is resource intensive

Faculty of Business & Economics

Opportunities for Collaboration the Group of Eight

•  Go8 – eight leading research-intensive universities in Australia •  Opportunities for collaboration

–  Performance of 11 certified buildings across the Group –  Design rating category for Educational buildings –  Many Laboratory-focussed, energy-intensive buildings

•  11 certified buildings, 2008 – 2014 •  Total 180,000 square metres Gross Floor Area

(1,937,500 sq ft) •  3 other buildings to rating standard (not certified) •  5 star & 6 star ratings

© Copyright The University of Melbourne 2008