Gunjang needed to establish consistent cost savings quickly because energy cost were on the rise.
Gunjang’s preference was a long-term solution to lower energy costs – delivered in a short time frame. Alternatives, like a full migration, were more complicated and time-consuming that the company wanted, so the decision was made to upgrade core products to enhance energy efficiency.
Gunjang wanted to achieve a return on investment (ROI) within two years so they could share the positive numbers with other facilities, and encourage energy upgrades in other locations.
As a result of these changes, Gunjang would be aligned with other similar companies with environmentally friendly strategies regarding energy utilization.
Previously, Gunjang used dampers to control airflow. The goal was to create more consistency and efficiency. To maintain the designated temperature and airflow of the boiler, Gunjang installed PowerFlex® 7000 medium voltage drives to three existing ID fans. Selecting the drive with the right capacity would allow for continuous and fast control, an important factor in maximizing energy utilization.
And, for stability, it was important to completely automate a new fan application without stopping activity in the facility. Installing the three PowerFlex 7000 drives simultaneously created more stable installation and commissioning, and lowered risks.