7anshin8r wrote:
That is what I was wondering about the hot Florida summers.
We were running 97 here yesterday ,and we are still in spring..... It held up fine to the temperature,even sitting in traffic for a few min.
I read up on the specs of the fan,and it looks like a 14" straight blade fan flows 1000 CFM.
>> According to heat dynamics ,a radiator only needs postive airflow of 30% of the core size,to cool the water sufficiently. << Now my fan covers 100 % of the radiator in the height ,and more than 60 % in the width.
Hence working fine!
One fact that is more important for airflow ,is how well the radiator is sealed off,and able to utilise the air porvided.Air leaking around the side and top/bottom decreases the capacity of the air cooling the core.
This is one of the reasons that the Rad fan (when not using a factory shroud),should allways be the same size,and not larger than the core.The edge of the fan blades that are not over the core,will pull the air around the core,and not through it
Practical example : If i fitted a 16" fan ,the would have been overhang of 1" per side of the fan.the specs of the fan says that it flows 2000 cfm.Now the 1" of the blade that protudes,is allso the most curved part of the blade,that generates the most flow.The curved part now disrupts the flow (not flowing through the core) ,and flows less than the given CFM.This sometimes knocks of 100s of CFM,not just 5 or 10
Fan placement ,fan shrouds , clean core and correctly working thermostat is much more important than the size of the fan in the end.
Ok,my fingers are going to fall off now...
Karis