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An award-winning energy upgrade to its Thornbury brewing facility should enable 3 Ravens to ramp up its production by up to four times current levels without increasing its energy consumption. In addition to upgrading the building fabric and installing 74 kW of solar panels and a 'cool roof', the brewery has installed a highly efficient CO2 chiller heat pump which can capture and use waste heat and cooling from the brewing process to supply other heating and cooling needs in the brewing process and wider facility.
The new system is also driven and managed by Fermecraft Industry 4.0 technology which automates processes to maximise energy efficiency. The planning to expand production utilising best practice technologies and a holistic integration of processes was aided by pre-feasibility and feasibility studies managed by the Australian Alliance for Energy Productivity (A2EP) and funded by the Australian Renewable Energy Agency (ARENA) through its Advancing Renewables Program.
Jon Fettes, director at Regenerate Engineering, the energy consultancy engaged by 3 Ravens, said brewing beer is extremely energy intensive, using a lot of energy for cooling and heating processes.
“Previously at 3 Ravens (and at most other breweries) this heating and cooling was done by separate machines with unused heating and cooling from the processes being wasted - or lowering the comfort in the brewing space," Fettes said. "The fantastic thing about this type of chiller heat pump used in this project is that they can simultaneously create heating and cooling at useful temperatures for various parts of the brewing process from a single refrigerant cycle. In this instance, it is also delivering a further waste heat stream to other rooms to help manage internal temperatures and comfort.”
Jarrod Leak, CEO of the Australian Alliance for Energy Productivity, said this project demonstrates the impact heat pump technologies can have right now on emissions and energy costs in manufacturing, particularly in the food and beverage sector.
“We need to accelerate the transition to heat pump technologies across the economy. As this project shows, not only will it help Australia meet its emission reduction targets, it will also support the viability and growth of local businesses that employ so many Australians,” Leak said.
Nathan Liascos, general manager of 3 Ravens, said sustainability has always been high on the company’s business agenda. “These energy focused upgrades have enabled us to ramp up production, control our costs and significantly reduce the emissions associated with each beer we brew. Something that’s really important to both us and our customers,” Liascos said. “It feels really good to be doing our bit to help fight the climate crisis and to be leading the way in renewable energy innovation in our industry.
“With more than 600 independent brewers in Australia, there is great potential for replication of this project to deliver emission and energy cost savings for small businesses across the country.”
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As other businesses feel the pressure of skyrocketing energy costs, Melbourne's oldest independent brewer, 3 Ravens, is bucking the trend and setting the standard for efficient, electrified processes.