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why does the electric fan come on when the a/c is on?
- Thread starter outracing
- Start date
WB9YZU
NAXJA Forum User
- Location
- Madison, WI
Yes, it avoids overheating.
It is far more effecient to prevent overheating by providing extra cooling on demand than it is to cool the system after it has overheated.
It is far more effecient to prevent overheating by providing extra cooling on demand than it is to cool the system after it has overheated.
ingenio
NAXJA Forum User
- Location
- Juarez Chih MX
to dissipate the heat generated when compressing the tetrafluoromethane
old_man
NAXJA Forum User
- Location
- Loveland, Colorado
I was born and raised in Texas. I don't remember folks using those $3 words,
sneakyjap96
NAXJA Forum User
- Location
- modesto
It actually come on to blow air across the condensor to aid wit the proper operation of the ac to condens freon. but the air flow cools radiator to
5-90
NAXJA Forum User
- Location
- Hammerspace
Two primary reasons:
- Increased engine loading, from turning the compressor.
- Increased thermal loading, because the condenser is in front of the radiator.
rstarch345
NAXJA Forum User
- Location
- Where ever I can wheel
My wife moves more air than the fan. Too bad I can't stuff her in that little space.
ParadiseXJ
NAXJA Forum User
- Location
- Paradise, CA 95969
:huh:
And guess what, my wife doesn't read myposts.
Good thing. Neither does mine but sometimes I leave my computer "up"...I'd hate to see you get into any trouble :gee:.
...and back to the OP...if, and before you asked...the compressor is on to remove moisture from the inside air. Just sayin'
ihscoutlover
NAXJA Forum User
- Location
- Edwardsville
5-90 hit on it a little but I will hit on it in more generic terms. The A/C system produces heat, just like the engine does while its running. The A/C(tetrafluoromethane) pulls the heat out of the passenger compartment, where it pushes it away out at the condensor. With the condensor being in front of a radiator, and as you drive the cooling air(well while you are moving), pushes the heated air from the condensor into the radiator, which actually adds heat to the water that is trying to release said heat itself. The engine driven fan(for those that still have one), moves some air, but while sitting in traffic, not enough keep the temps low(especially in like AZ where it can hit 115+). All the added heat required the engineers to come up with a neat way to remove heat while driving or idling. The electric fan on the later models(97+) supposedly moves quite a bit of air, however the earlier model one(pre 97) does a pretty good job as well. All I can say is the additional heat from running the A/C caused the engieers to rethink their initial design, and add the electric fan to come on when the A/C is switched on. Does that help a little??
Jeff
Jeff
Al S
NAXJA Member #451
- Location
- North Olmsted, OH
And then the engineers changed their mind and in 00 & 01 models the electric fan doesn't automatically come on when the AC is turned on, but is controlled by the computer.
Brown Dog
NAXJA Forum User
- Location
- SE Phoenix Valley, AZ
With wives you don't need a fan or a motor for that matter. You just aim them out the rear for the jet engine effect. And guess what, my wife doesn't read my
Uh...she will now....
5-90
NAXJA Forum User
- Location
- Hammerspace
I didn't know how far into thermodynamics he wanted to go - so I simplified it immensely. But, the core issues were still covered!
Thermodynamics is not for the ill-prepared...
ktwalker01
NAXJA Forum User
- Location
- Jackson, WY
Makes the too hot stuff cool down quicker, and makes the ac condenser work better. Solved.