To follow up, formula 1 cars can't cool themselves, they don't use radiators like a road car do, and therefore need a flow of air to cool down.bonjon1979 wrote:It blows air into ducts to cool the brakes down.
When a car comes into the pit the lack of airflow to the car (as they are not driving as speed) can cause parts to rapidly overheat, as such teams use blowers to cool certain parts down, such as the brakes.