Quote:
Originally Posted by flatheadmurre
First do you plan on running a fan shroud ?
That 3 blade fan is designed and works well without one...so it has an advantage right there compared to a truckfan.
The modern flexblade fans are designed to use with a shroud...most fans that have a straightcut edge are performing best running against a shroud.
Flow in the system isnīt dictating the fan...itīs more about Power/effiency of the engine that sets the need for cooling...and the the core itself how much suction you actually need to pull the air through it.
You can have a fan that pulls a lot of air but if it canīt handle a thick core it wonīt work in the end.
So Flow of air and static pressure is the 2 things you need to calculate.
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You are correct about airflow and static pressure. Although fan cfm and total static pressure cannot be measured in this situation, fan air velocity could.What you want is the highest velocity of airflow through the inlet of radiator. This can be measured with a velometer.