Cadillacmak
I'm Awesome
I keep seeing posts on electric fans and there appears to be a lot of mystery behind them. So here are the facts and some comments to help you decide if you really want them or not.
Watch this -
Moving on to electric fans. If the 30hp fan in the video is to be replaced with an electric fan, this is the wattage we need to get the same fan. 22,380watt fan, thats right! hp x 746 / volt x %efficiency.
So now it depends on when you need that cooling and where the fan is getting its air. If your over heating at idle in your big block 70's Vette, the electric fan will make your life better. If you have a very aerodynamic front end (to save HP) an electric pusher fan might help disturb the air that is trying to go around your vehicle because its closer. But if you are overheating pulling your trailer down the highway at 80mph, well I found you a fan https://www.indiamart.com/proddetail/30hp-industrial-axial-fan-2850043568655.html
I am not against electric fans, I have them I my 75 F250 for crawling uphill in 4low.
Watch this -
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30hp to drive a fan isn't 30hp gone, they used 30hp to move air. That is the way fans work, if a fan is designed to be 30hp, that is a rating at a certain RPM, at a certain temp, with a certain humidity. And it will move 30hp of air. But... your truck driving down the road will not use 30hp to move that air unless you blank off the grill. The air is already moving across the fan forced in from the grill via the horse power it takes to move your vehicle through the air. So if you have 25hp of air coming through your grill and you have a 30hp fan, your engine will use 5hp from the front of the motor to power the cooling. But you are still using 30hp because 25hp is deliver to your back tires to smash that air through your grill. No matter what, it takes energy to move everything, including air, and we are moving it with HP.Moving on to electric fans. If the 30hp fan in the video is to be replaced with an electric fan, this is the wattage we need to get the same fan. 22,380watt fan, thats right! hp x 746 / volt x %efficiency.
So now it depends on when you need that cooling and where the fan is getting its air. If your over heating at idle in your big block 70's Vette, the electric fan will make your life better. If you have a very aerodynamic front end (to save HP) an electric pusher fan might help disturb the air that is trying to go around your vehicle because its closer. But if you are overheating pulling your trailer down the highway at 80mph, well I found you a fan https://www.indiamart.com/proddetail/30hp-industrial-axial-fan-2850043568655.html
I am not against electric fans, I have them I my 75 F250 for crawling uphill in 4low.
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