As part of Dawn Meats commitment to low carbon production, they set a target of achieving fossil fuel free status at the McDonalds Plant in Carroll’s Cross. A multi-pronged approach was developed:
The Heat Recovery Process at Carroll’s Cross is as follows. Cold water from the onsite well is used to cool the refrigerator compressors, taking the water to approximately 45⁰C. Next the water is sent through Heat Pump 1, taking the temperature to 55⁰C. The water is then moved through Heat Pump 2, in the Condensers, where the temperature of the water goes to 60⁰C. The final 10⁰C is achieved by directing the water through the main plant air compressor and boasting with heat exchanger. All of this process is controlled by the on-site SCADA system.
A notable element of this project was the need to install a second water line through the site
The heat recovery system at Carroll’s Cross has been a huge success with verified annual savings made through the installation outlined in the table below.
|Fossil Fuel||Litres||KWH Savings (Equivalent)||Savings (€)||CO2 Savings (T)|