If you can’t stand the heat, go net zero
The Insight
Most of the developed world is committing to Net Zero Emissions by 2050, with notable strides being taken from within the private sector. There are four key motivators behind this commitment:
It’s good for business, and in some cases it’s essential
It will save them money
It’s considered essential for the long-term survival of the human species
It’s actually not that hard to achieve
In order to partake in the international market, Australian supply chains must follow suit. In extraordinary cases of proactively, such as with the Australian National University in Canberra, some companies are committing to achieving carbon negative by 2030.
In consideration of building services, HVAC and hot water systems can account for up to 60% of a building’s total emissions – ultimately playing the largest role in reducing building’s emissions to zero.
The Impact
Fortunately, this doesn’t require an upheaval of existing HVAC systems. The technology and expertise required to achieve zero emissions HVAC currently exists, all that’s required is investment.
Existing HVAC systems need to be retrofitted with innovative controls and technologies that bring energy efficiency to the forefront. It is essential to use as much of the existing systems as possible to minimise cost, waste and disruption to operations.
In colder climates, this will require the efficient use of waste heat to supplement or replace existing space heating and hot water heating systems. This includes replacing fossil fuel-based heating systems with energy-efficient electrical systems and maximising the use of renewable energy including from natural heat sources.
In warmer climates, this will require retrofitting additional controls to change the operational characteristics of existing systems to better suit their application. This includes replacing inefficient and uneconomical systems with new technology and maximising the use of renewable energy.
Retrofitting zero-emissions HVAC will still require electrical energy. Sourcing renewable energy will be required, whether it is generated onsite or purchased from an energy retailer. As there is currently a significant amount of investment in renewable energy, this will not be difficult to achieve.