Re <VV> A/C Condensers & Fans (long)

[Bill Hubbell]

Hmm.  If it is true that the limiting factor is the amount of air that can
flow through the top of the engine, then I wonder what would be the effect
of puller fans PLUS an additional air outlet, say through the spare tire
well or maybe creating a vent between the rear edge of the deck lid and the
rear of the car.  Assuming that the puller fans really are pressurizing the
engine compartment, opening a vent elsewhere should allow some of the excess
air to be exhausted.  If true, now we only need to figure out how to exhaust
the hot air from the compressor and bring in fresh cool air for the engine.
Maybe some sort of "ram" effect from the front of the wheel wells?

Bill Hubbell

----- Original Message ----- 
From: "Rusty Rose" <vairboy2001@yahoo.com>
<SMIT>

> Bottom line, the fans made no difference (other than
> the electrical load on the system)!  The head pressure
> test done at idle showed no difference with and
> without the fans on (2, 9" pullers on the condenser).
>
> Then we did a temperature/laod test under 3
> conditions... idle, 35 MPH with gentle stop and go,
> and at constant 65 MPH at 94 degree outside temps and
> sun load.  We gathered over 3,000 data points over 5
> locations on the car in 3 35 minute test with 2 cars.
> Even with all of that, there were no measurable
> differences because of fan use.
>
> Why?  Not sure!  I'd guess that the hole in the top
> shroud that all the air moves through is only going to
> move X amount of air, and that's it.  Adding fans will
> change the pressure in the engine compartment, but in
> our case, it didn't move "more" air overall across the
> condenser.