Heat recovery

Tegel Foods has installed a heat exchanger which is expected to save the company more than $100,000 a year.

With just two years payback, Tegel foods is also expected to save 628 tonnes of CO2 a year.

The plant needs considerable refrigeration and uses a lot of hot water, making it an ideal candidate for a heat recovery system. Refrigeration creates waste energy in the form of heat, while heating large quantities of hot water requires a lot of energy.

Southern Lakes Laundries has installed a high-efficiency heat exchange unit for their main industrial washing machine that is delivery savings of up to $45,000 a year.

Southern Lakes Laundries retrofited the heat exchanger into their existing equipment without any disruption to their 364 day a year operation.

The project payback period is approximately 2 years.

This farm installed a heat exchange system - it extracts the heat from the waste water and uses it to pre-warm the incoming water in the dairy shed. It reduces energy use as less energy is needed to heat each new batch of water to the 85 degrees celsius required for the next wash.

Monitoring has shown that the system is on target to achieve an annual energy saving of 30%. That equates to a cut in CO2 emissions of about one tonne a year.