This fan is designed for a car's radiator, to be placed right behind it, so that it sucks air from the radiator. (it spins counter-clockwise, as viewed in the above photo) The person who send me this photo has a interesting question. He bought the fan as pictured above. However, some car guys told him that the blade-rim is installed backwards.
So, he reversed the rim, resulting in the following photo. The rim still spins counter-clockwise, but now the blades are scythe-like.
radiator fan
The question is, which way is the right way? (i.e. more efficient for sucking air)
I have no idea, but i'm guessing the car guys are right. If you know, please post result here:
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xah_lee) wrote,
