After speaking with our technical sales department and after taking into consideration the distillery’s daily water volume and temperature requirements as well as the colder temperatures the distillery would experience in winter, it was agreed that Mitsubishi Heavy Industries’ Q-ton, CO2 air-to-water hot water solution would be perfect for the application.
The Q-ton is an industry leading air to water heat pump that utilises CO2 as a natural refrigerant to deliver a reliable and highly efficient hot water solution in even the coldest environments. The Q-ton heat pump draws air through an evaporator containing CO2 refrigerant, which absorbs the heat in the air. The two-stage compressor then compresses the refrigerant under high pressure to raise its temperature, while an on-board heat exchanger uses heat from the refrigerant to generate hot water, which is then stored in tanks. The Q-ton can deliver great performance at low outdoor temperatures down to -25°C, making it perfect for the colder climates of Tasmania and allowing it to deliver accurate, set point heated water, all year round.
Achieving an industry leading COP (coefficient of performance) of 4.3 by delivering 30kW of output power from only 7 kW input1, the Q-ton is much more efficient than the distillery’s existing water heater which was only achieving a COP of 1, delivering 48 kW output from 48 kW input. As a result of being more energy efficient, the Q-ton is much cheaper to run; delivering huge reductions in running costs, with the distillery anticipated to save 60% per year on their energy bills compared to an instantaneous heater. In addition to this, the Q-ton’s remote-control scheduling functions allows it to produce hot water during off peak electricity periods and store this in tanks for later use, offering even further cost savings.
Consuming 76% less energy than an electric line heater and 46% less energy than a gas boiler, the Q-ton generates 74% less CO2 emissions (47 tonnes) than an electric heater and 48% less emissions (23 tonnes) than a gas boiler, making it much more environmentally friendly2.
The Q-ton can be configured as a stand-alone unit or operate with up to 16 units in modular configuration, providing 3,000 to 100,000 litres of sanitary hot water daily and can be easily controlled from the simple touch screen control panel. This enables programmability and flexible operation not possible with a conventional hot water system such as an electric line heater. By working closely with the owners of the Shene Estate, MHIAA was able to deliver a reliable hot water solution that will significantly reduce the operation’s energy costs and deliver reliable hot water, even throughout Tasmania’s chilly winters.