In the new Danfoss pack controllers for controlling compressors, it is now possible to use a specific heat recovery function. For CO₂ applications, it can be shown that it is possible to reclaim all heat necessary in the supermarket, and thus save all energy costs on heating.
Heat recovery control and savings:
In the new series of pack controllers, it is now possible to use two new functions and reclaim heat for hot tap water and general heat recovery. This has been tested in two different locations, and the pack controller with heat recovery, is now installed in many places throughout Europe. In both test locations, data has been collected for several months and the conclusion is that it is possible to obtain savings up to 25.000 € pr. Year for a mid-sized supermarket.
System design
The system is a transcritial CO₂ booster system with hot tap water and heat recovery. This is a traditional system where the gas cooler controller is integrated into the pack controller.