Should electric fans push or pull?

Electrical fans can either push air through the radiator or pull air through it. A pusher fan sits in front of the radiator. When a vehicle is moving, a pusher fan can obstruct airflow due to its positioning in front of the radiator. … Always choose a puller fan but if space is an issue then use a pusher fan.

Do fans push or pull air?

In simple terms, a computer case can either have: Positive pressure – The case fans push more air into the case than then pull out, so there is more air pressure inside of the case. … Negative pressure – More air is being pulled out of the case than being pushed in, creating a vacuum.

Can you use a pusher and a puller fan together?

Yes, you can technically run a pusher and puller fan in conjunction. … Because of that, the mechanical fan can only pull so much air through the radiator at idle and low speeds, making an additional pusher fan a useful addition.

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Are electric fans reversible?

Reversing Direction

Switching the plus and minus leads on most electric fans will reverse the rotation and in fact some fans are designed to be reversible, but many are not (always check with the manufacturer).

Is an electric fan better than a clutch fan?

When compared to an electric fan, fan clutches are quite inefficient. … The benefits of a Thermatic Fan lay in its ability to provide constant air flow, improved fuel economy, better air-conditioning performance, cooler engine running and increased engine power.

Is it better to pull cool air in or push hot air out?

4 Answers. From a purely temperature point of view, not human perceived level of hotness, it is better to point the fan outward. This is because the fan motor will dissipate some heat, and when the air is blown outwards, this heat goes outside.

Is push pull necessary?

Yes, a push pull will help. However using suboptimal fans in the first place (high airflow) will result in more noise than necessary as they will have to ramp higher to get the same airflow mass. But this all depends on the model fans and what their fan curves look like.

Do electric fans need a shroud?

To get the flow from electric fans, you either need a shroud with the fans pulled away from the radiator and some mechanism for a TON of bypass for free-flow, or you mount properly-sized fans tight up against the radiator with no shroud so you have free space beside them for free flow.

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How do you make a fan suck air?

Turns out, according The Simple Dollar, having your ceiling fan set to high with air blowing directly down, as it does with most fans when set to counterclockwise, is what creates the magical breeze effect. (In the winter, fans should be turning clockwise on a low setting, to suck air upward and distribute heat.)

Does a pusher fan need a shroud?

Flapper Valves / Shrouds

If a pusher fan is the only fan used, cover as much of the radiator core as possible. Remember, shrouds cannot be used on pushers. Fan shrouds need a way to mount to the radiator.

Can you run a clutch fan and electric fan?

You can run both but 2 won’t cool it any better.

How close does the fan need to be to the radiator?

The fan is designed to create negative pressure behind the radiator to pull air through. But the farther away the fan is from the radiator, the less effective it becomes. Flex-A-lite recommends that the fan blades be within 1 inch of the radiator and no more than 2 inches away.

Do electric fans make a difference?

Electric Fans

It places an additional draw on the electrical system, but this is a more efficient means of spinning a fan, and it has a smaller impact on engine drag. Between the two types of fans, an electric fan offers an improvement in power delivered to the wheels.

What is the main advantage of having an electric cooling fan compared to a directly driven fan?

A key advantage of electric fans is increased engine cooling and improved air conditioning cooling at idle, when it is most needed. In addition, replacing an engine-driven fan can increase horsepower and improve fuel economy as the engine drag from turning the fan is eliminated.

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Is a fan clutch necessary?

The fan clutch is one of the most essential components in the operation of cooling fans and greatly contributes to the overall operation of the engine. While many new vehicles use electric cooling fans, many older vehicles utilize a mechanical fan clutch to help control the fans.