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Whats best for me? Push or pull? - Page 3

post #21 of 32
Quote:
Originally Posted by Weedvender View Post
Well the thing is.... the car radiator has a crap load of wind going through it @ 60 MPH
Cars doesnt always move @ 60mph.

To push or to pull should be considered by the fin-density and the static pressure of the fans. If you have fans with good static pressure theres nothing wrong with pull only. A fan with less pressure should be placed in push config IMO.
post #22 of 32
Quote:
Originally Posted by BANDIT_COROLLA View Post
its exact same reason why ALL car radiator fan are pulling.
No, some car radiator fans pull because cars generally drive forward and the fan is inbetween the rad and the engine. There are vehicles with fans on the non-engine side that push. For cars it doesn't matter if it push or pull because rads are generally larger than they need to be, in the most precise sense. What matters is that the fan complements the natural air flow created by driving.
post #23 of 32
Push/Pull > Push > Pull.
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post #24 of 32
Quote:
Originally Posted by BANDIT_COROLLA View Post
Pulling is always better, i know its hard to believe but pulling gives much better airflow rate, its hard to explain but its exact same reason why ALL car radiator fan are pulling.
On a sedan or smaller usually they only turn on after certain amount of heat or when the car's shutting off. When the car's in motion it has all the push it needs with incoming air.

I'm very interested in hearing the real outcome of this question. Pulling makes a lot of sense, but so does pushing.
    
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post #25 of 32
Quote:
Originally Posted by xToaDx View Post
Uhh "Fix'd"?
Do you mean FIXED?

Anyway, my rad fans push. So I guess I'll recommend that too.
Been on 4chan to much... I use "Fix'd" since I got that 4chan disease.
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post #26 of 32
I can't imagine pull being better then push. Pull is for venting trapped heat, push is for spot cooling. Remember the whole idea is to MAXIMIZE the number of air molecules that collide with the fins per unit time. it seems to me push would be better because in pull mode, there would be a pressure drop between bottom of the fan and the back of the rad where the air is coming in. this would cause less suction to the surrounding air and hence less air flow in general. this is different when we just want to vent heat from a computer case, in this case, we're not trying to maximize the number of air molecule collisions we're just trying to pump heat out of the case.
Edited by Grandlo - 2/19/09 at 4:47pm
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post #27 of 32
Quote:
Originally Posted by Grandlo View Post
I can't imagine pull being better then push. Pull is for venting trapped heat, push is for spot cooling. Remember the whole idea is to MAXIMIZE the number of air molecules that collide with the fins per unit time. it seems to me push would be better because in pull mode, there would be a pressure drop between bottom of the fan and the back of the rad where the air is coming in. this would cause less suction to the surrounding air and hence less air flow in general. this is different when we just want to vent heat from a computer case, in this case, we're not trying to maximize the number of air molecule collisions we're just trying to pump heat out of the case.
when it comes to wc'ing, it depends on your rad's fpi, how thick your fans are, and how fast they are. depending on each, there is specific scenario that would benefit the user the most.

the only exception to that is push+pull w/ shrouds.

martin's testing has shown that very well.
Edited by nafljhy - 2/19/09 at 5:42pm
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post #28 of 32
Quote:
Originally Posted by Ducky View Post
Push/Pull > Push > Pull.
This.
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post #29 of 32
Is it possible, that push and pull are both equally efficient?
    
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post #30 of 32
Go pull, but also make sure your room temp is like 74F and below 70F preferebly. At the end the deciding factor is the ambient room temp. If your in a 90F room, no matter u have 400 fans pushing and pulling, ur gonna get hot burnin temps. Soo ya, pull , but always have AC on, or you live east coast ur lucky its always cold. Leave window open always. Take off your side case unless the rad is outside...gl
    
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