CHILLED BEAMS & FAN COILS
precinct. This is due to food waste and landfill being a massive generator of greenhouse gases. Black solider fly, in its larval stage, is being used to eat through the waste, which is then transformed into fertiliser that can be used by nearby farms or gardens. The larvae is removed every 12 days, with the well-fed, high protein larvae being used as chicken and fish food.
Insect hotels have also been built among 17,000 plants and flowers on the rooftop, to encourage bees to the area, which therefore improves the air quality and helps to support biodiversity. The overarching aim is to support pollinators because they are extremely important and will help to pollinate the local botanic gardens and parks. The previously mentioned rooftop plants
– growing greens – not only help with the rainwater harvesting, but also function to keep the ambient temperature of the rooftop closer to 25 degrees on hot days, which helps to maximise the efficiency of the on-site installed solar panels. There was a recent study, conducted by the University of Technology Sydney, asking the question “Would surrounding rooftop solar panels with green plants make them more
efficient?”. The study, which was originally reported by ABC News, found that green roofs make solar panels more efficient. The experiment was conducted on two roofs to test the potential hypothesis. One of the rooftops had the conventional photovoltaic solar system with no rooftop growing green (International House Sydney, which is the sister building to Daramu House), and another with the same solar panel system, but this time surrounded by the growing green foliage. They then compared how much energy the two solar system generated over an eight-month period. They found that the solar panel system
surrounded by the growing green 'the green roof' had improved performance by as much as 20% at peak times and by 3.6% over the eight- month length of the experiment. On hot days, surface temperature was up to 20 degrees lower on the green roof compared with the standard solar roof with no growing green. Daramu House rooftop with the growing
green surrounding the solar panel system helped to generate an additional $2,595 (AUD) worth of renewable energy. The study proves that green roofs can have a key role in future- proofing cities against the damaging effects of climate change in partnership with locally
sourced sustainable materials and energy- efficient HVAC solutions such as the ‘X-Wing ‘Radiant Passive Chilled Beams supplied to this project by Frenger. Frengers ‘X-Wing’ Radiant Passive Chilled Beam (40% Radiant quotient) provides both cooling and excellent indoor climate environment given the radiant proportion of cooling creates no air movement, hence lower spatial air velocities than other cooling solutions which is essential for building occupants’ Wellbeing and performance. Our X-Wing copper coils are produced on Frenger’s fully automatic bespoke “state of the art” serpentine bending machine, which produces seamless sinusoidal copper coils (without any joints whatsoever) ensuring leak free and long- term life expectancy. The X-Wing’s aluminium radiant 'wings' are mechanically bonded providing 100% metal to metal encapsulation with the seamless copper waterways for optimum heat transfer; the aluminium wings can also be removed at the end of the products life to enable 100% material recycling of the copper and aluminium at end of life where life expectancy is 30 years plus, dependent upon water quality. X
www.frenger.co.uk
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www.acr-news.com • February 2022 17
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