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Re: pump and fan
Posted by oldsaab [Email] (more from oldsaab) on Mon, 13 Jul 2009 23:03:50
In Reply to: pump and fan, mag [Profile/Gallery]
, Mon, 13 Jul 2009 22:30:43
apologizes in advance in case I get this wrong...
the old belt drive fans were, originally, constant drive and actually hindered the cooling that was available at speed. That was the reason fan clutches came into being, a kluge to get around that issue, trying to get the fan out of the way and let the airflow do a better job.
Somewhere along the way electric motors got much more reliable, less expensive, smaller, and all that... and electric fans were introduced. They had the immediate advantage of only running when necessary.
And, in fact, if a car with electrin fans, say a Dodge Neon, has a properly working radiator and otherwise cooling system the fans should not be needed at near highway speed, as the volume of the air from the moving car thru the radiator will equal or exceed the fan volume.
Advantage to avoiding generating waste heat? It would seem so but where is it coming from and how else could it be used?
Posts in this Thread:
- Do cooler operating temps reduce mechanical losses?, mag , Mon, 13 Jul 2009 02:54:45
- Re: Do cooler operating temps reduce mechanical losses?, Ari, Tue, 14 Jul 2009 04:19:15
- Let's leave the politics aside ..., mag , Mon, 13 Jul 2009 21:41:35
- Re: Do cooler operating temps reduce mechanical losses?, mag , Mon, 13 Jul 2009 13:48:16
- I have never used ethanol,, tibbidoh , Mon, 13 Jul 2009 15:46:26
- Re: I have never used ethanol, mag , Mon, 13 Jul 2009 20:13:08
- Re: I have never used ethanol - me either, oldsaab, Mon, 13 Jul 2009 17:09:44
- Re: I have never used ethanol,, Justin VanAbrahams , Mon, 13 Jul 2009 16:35:33
- Re: Do cooler operating temps reduce mechanical losses?, tibbidoh , Mon, 13 Jul 2009 07:00:39
- Re: Do cooler operating temps reduce mechanical losses?, Landjet , Mon, 13 Jul 2009 05:18:29
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