T H E S E - TEL

Potentiel d’économies d’énergie par les services énergétiques – Application au cycle de vie
des équipements de conversion de l’énergie
Without Energy Management System
5
4
3
2
1
Equipments
Input Power (W)
Time
Time
208
5
4
3
2
1
With Energy Management System
Equipments
Input Power (W)
Time
Time
The rise in temperature of the regulation is slower but on the other hand, this device avoids
the power call peaks. During the audit, LM Control must take into account production
parameters (average parts flow to galvanize). Indeed, if this flow is too high, the furnace will
not have the capacity to maintain the temperature of the bath because heating periods will
regularly be cut by the optimizer. The temperature will thus decrease gradually and the zinc
will solidify.
The set up of this energy management device allows to reduce the peak load from 650 kW to
510 kW as showed on the following diagrams. The subscribed power can now be reduced in
order to decrease the electricity bill.
Beginning of the
optimization