Viegand Maagøe has been helping Green Isle Foods since 2009 to maximize the energy efficiency of the company’s manufacturing plants in Ireland. Big savings have been achieved by using waste heat – nearly €54,000 at its Portumna plant. Optimized operation has also increased the plant’s freezing capacity by almost 20 %.

Client: Green Isle Foods (Northern Foods)

The task
Much of the heat required by the food industry goes on heating water and buildings. As this involves rather low temperatures there is considerable potential to use waste heat.

How we carried out the task
Viegand Maagøe was involved in all phases of the original project in Portumna and since then has expanded the concept to Green Isle Foods other manufacturing plants in Ireland.

Our work included:

  • mapping the heating demand, temperature requirements and applications areas;
  • running several workshops on solution concepts for key members of staff at Green Isle Foods;
  • mapping available quantities of waste heat in future and new utility systems;
  • analysing the plant’s spiral freezer capacity and operating routine;
  • developing an overall waste heat concept including 24-hour storage of hot water;
  • getting price quotations for equipment and solutions; and
  • providing ad hoc assistance during the installation and testing of the plant.

The result
Apart from the big savings achieved by using waste heat in Portumna, the experience laid the foundations for optimizing the production processes and the utility systems at four other manufacturing plants belonging to Green Isle Foods. The heat recovery project at Portumna was awarded a 1st place as the best demonstration project at the Sustainable Energy Authority of Ireland’s Energy Show 2010.

For more information, contact:
Peter Maagøe Petersen, pmp@viegandmaagoe.dk and +45 21 70 03 08