EN - How the heating pre-control works?

EN - How the heating pre-control works?

Question

The heating control is adapted to the outside measurements.

How this pre-control works?

Answer

Every greenhouse departments can have one or more heating circuits to avoid that the greenhouse temperature becomes too low.
The pipe temperature per department is computed depending on the temperature difference between the greenhouse temperature setpoint and measurement and the outside conditions. Take a look to the example below:



In both situations the temperature difference between the greenhouse temperature setpoint and measurement is 1 °C.
The outside conditions in the right picture are bad, that's why a higher pipe temperature is computed. 
So the heating control is automatically adapted to every season. This is called pre-control.

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