Case study: 11 November 2010 – HASSELL has won the prestigious World Architecture Festival’s Interiors and Fitout of the Year award for the ANZ Centre in Melbourne’s Docklands.

The ANZ Centre, recently won the Emil Sodersten Award for Interior Architecture, also by HASSELL, from the Australian Institute of Architects

Presenting the award in Barcelona on Friday 5 November, the international jury described ANZ Centre as: “conceptually ambitious, and rich in plan and section in its diversity of workplaces. The result is a distinctive personality appropriate to an institution with a modern perspective. It accommodates the most contemporary ideas of workplace planning and has excellent green credentials. The building is superbly crafted and carries the spirit of a respected institution forward into a modern open and accessible one.”

The building

The ANZ Centre designed by Hassell in collaboration with Lend Lease Design and interior design by Hassell, is the largest single-tenanted commercial building in the Southern Hemisphere, with 6500 employees, that can be accommodated in workspace of  85,450 square metres over 13 floors.

ANZ invested an additional $35 million to lift ANZ Centre’s environmental credentials.

The building has achieved a six star Green Star rating from the Green Building Council of Australia for Office Design and is registered for two additional Green Star categories – Office Interiors and Office as Built.

The tri-generation system
A tri-generation system located on the roof of the building has been installed to provide electricity, heating and cooling to the building. The tri-generation system consists of four natural gas fired reciprocating engines that provide a total of about 2.1MVA or 1,900kW of electrical generation two units at 400kVA and two units at 650kVA. This represents about 36 per cent of the peak electricity demand for the base building.

The engines are predicted to generate over 3,000,000kW/h of clean electricity per annum. This equates to approximately 75 per cent of the electricity consumed by the base building or 23 per cent of the whole building including the tenancy. In Victoria, this electricity produced by natural gas has carbon intensity approximately 50 per cent lower than grid supplied, brown coal based electricity.

Approximately 50 per cent of the heat generated by the engines in the combustion process is recovered and used to contribute to the building’s heat and cooling requirements.

This heat energy is considered to be “free” or “waste” as it is a by-product of generating clean electricity. An absorption chiller with a cooling capacity of 700kW is used to convert waste heat into useful cooling for the building. Any residual heat is either used for space heating, to heat the domestic hot water or is finally rejected to atmosphere via the cooling towers.

Wind Turbines:
Six wind turbines were installed at ANZ Centre, ANZ’s new global headquarters in Melbourne’s Docklands.  This is the first time these “quietrevolution” vertical axis wind turbines have been installed in Australia. The turbines form part of a suite of environmental features, including a gas-fired trigeneration plant, black water recycling, solar panels and in-floor airconditioning.

The turbines:

  • Are about five metres tall and have a diameter of 3.1 metres
  • Are expected to generate about 10,000 to 11,000 kw hours each annually – enough to power about three houses over a year
  • Each costs about $100,000, plus installation
  • will reduce the amount of electricity sourced from the grid
  • known as “quietrevolution” were sourced by Bovis Lend Lease, and supplied by Maxim Renewable.

Key environmental features include:

  • River cooling: an air conditioning system that uses cool water from the Yarra River to reduce demand on the cooling towers.
  • Green roof: The lower roof of the building on the Yarra River side will be planted with low-growing, drought tolerant plants.
  • Tri-generation: Electricity will be generated on-site using natural gas instead of brown coal. The heat from the process will feed the air conditioning absorption chillers in the summer and the boilers in the winter .
  • Solar power: 1000 square metres of solar cells to supply renewable energy.
  • Wind turbines: Roof mounted wind turbines will supplement electricity generated on-site.
  • Underfloor air-conditioning: The building’s energy efficient air-conditioning system maximises the use of fresh air.
  • Blackwater recycling: All waste water will be recycled for uses such as flushing toilets. The building will use about 50 per cent less water than the average Australian office building.
  • Storm water re-use: Rainwater harvested from the building’s upper roof area will be collected and used to irrigate the green roof, internal plants, terraced gardening and other landscaped areas.
  • Fixed and wireless connectivity throughout the building, VOIP telephony systems, Cisco TelePresence suites, and staff are using smart card, photographic ID security access cards that include Visa payWave technology.

The Fifth Estate – sustainable property news and forum, with contributions from Hassell