CHILLED BEAMS & FAN COILS
Supporting the way to net zero carbon buildings
In this article Michael Ainley, managing director of Frenger looks at how Frenger’s product solutions have and can support the pathway towards Net Zero Carbon Building, whilst looking in-depth at an example of a worldwide sustainable project.
A
ccording to the World Green Building Council and in light of the recent COP 26 event, building and construction is
responsible for 39% of all carbon emissions in the world, with operational emissions – energy used to heat, cool, and light buildings – accounting for 28%. The remaining 11% comes from embodied carbon emissions, or ‘up front’ carbon that is associated with materials and construction processes throughout the whole building lifecycle. 80% of existing buildings will still be in use when net zero targets come into effect, so it is crucial designs look to use renewable energy, more energy-efficient systems, lower carbon construction materials etc. Scientists advise that humanity needs to reduce its carbon emissions by 7.2% per year for the next 10 years.
Daramu House, Barangaroo Located in Barangaroo, Daramu House is the sister building to the International House project and together they complete the first stage of the Barangaroo South Precinct, with the $6 billion (AUD) development in Barangaroo
16 February 2022 •
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now having two timber buildings. Another world leader in sustainability and innovation, Daramu House was also given a 6 Star Green Star as-built rating, as well as using 90% sustainably forested Cross-Laminated Timber (CLT) throughout the building. This use of timber instead of traditional construction materials such as steel and concrete, lead to a 48% reduction in embodied carbon pollution. In addition, 97% of all construction material on the project was recycled. The building, circa 10,000m², helps to
provide a gradual transition between the three international towers and the adjacent Sussex Street. Daramu Houses helps to celebrate the rich industrial history of the Barangaroo area by re-purposing the timber building typology that dominated the area post European settlement, with the use of timber as the structural component connecting the history of the precinct to its present. Supplied with Frenger’s ‘X-Wing ‘radiant passive chilled beams, these ‘X-Wing’ units were installed exposed to compliment the architecture of the building. The building is
designed and detailed to maximise the life of the timber so that it is easily maintained, efficiently replaced, and to be a long-term commercial asset for the project, with the timber structure currently the largest in the world for mid-rise commercial projects. Internally, the office embraces a biophilic design with the Cross-Laminated Timber (CLT) left exposed providing warmth to contribute to a healthier workplace for building occupants, as well as reducing stress and anxiety. Completed in 2020 after being proposed in 2017, the project implemented additional initiatives to drive sustainability of the project further by installing over 700m² of solar photovoltaic cells on the roof top providing an on-site 105-kilowatt array to supply power to the precinct. The roof top also featured a growing green roof, as well as bee sanctuaries and a 5000-ton carbon storage system. Another carbon neutral feature the Daramu House project has implemented is the trial use of on-site insect larvae to process food scraps and the compostable packaging from the retailers and office buildings nearby in the
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