What is the Function of a Radiator Fan?
Salvage Parts No Comments »The modern motor vehicle is very efficient at converting the energy held in the petrol into energy that can be used to drive a car. However efficient though it may be only about 75% of the energy in the gasoline is actually converted into motion. The remainder is lost in the form of excess heat. Your vehicle needs a cooling system to remove this heat before it can do damage to the engine. Excess heat also hinders performance and decreases fuel economy.
Some of the heat is vented through the exhaust system as gas. The remainder of the heat has to be removed by the cooling system. The cooling system is a network of holes drilled through the engine through which coolant is pumped. Because calling is a mixture of antifreeze and water it has a high boiling temperature. This means it can get a lot hotter than water normally can without boiling away. Because the coolant is also kept under pressure this to increases the boiling point allowing it to absorb even poor heat.
Once the water has been superheated in the engine it is circulated back to the car radiator. The radiator is there to facilitate heat transfer between cool air flowing in through the front of the car and the superheated water. By spreading the water over a very large number of metal plates in the radiator the surface area is increased exponentially and cooling can take place rapidly because of it.
If the car is moving through a traffic jam or stationery and not much air is entering the engine then there is a problem of overheating. To counter at this a radiator fan in front of the radiator can generate airflow when required. A thermostat is used to turn this feature on and off. The radiator cooling fan is powered by the fan belt and this belt should be checked regularly to make sure you do not overheat.


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