Natural convection allows the warm air from the components rise unobstructed then the recess allows for the cooler air to fall back behind the components.

Harmonisation of temperature within the control cabinet is then achieved, reducing the differences between the different thermal layers inside.

Greater efficiency can be achieved by coupling this with any active cooling technology such as a heat exchanger or air conditioning unit. AirSTREAM even has its own fan system which can be used to direct cooled air to where it’s needed the most.
More information on how AirSTREAM can be of benefit in these goals, take a look at the infoBANK...