Regulate kitchen exhaust hood speed according to temperature
“My restaurant’s exhaust hood is always running at full speed, even when my cooking equipment isn’t being used. I’d like to fi nd a way to reduce the amount of energy wasted and lower my utility bills.”
Solution in brief
The solution consists in using variable speed drives (VSD) to adjust exhaust operation to the amount of activity in the kitchen.
Fan speed is controlled according to air temperature. A sensor inside the exhaust hood detects air temperature, and an Altivar 12 variable speed drive adjusts the exhaust fan motor speed.
Benefits for end users
> Energy savings of 20% to 50%, depending on use: maximum exhaust hood operation is usually limited to just a few hours a day
Benefits for professionals