Question on AC condensors, can they be run in series? Options

[boxsterfan]

Suppose a crazy person was thinking of A/C in their 914. Could such a crazy person run condensors in series behind the fog light grills?

Basically, the refrigerant (R134) would come from the compressor all the way up to the right front under the headlight, go through a condensor, come out of that condensor across the front of trunk, into a second condensor under the left head light area, and then back out to a receiver/dryer and through the rest of the system.

Obviously, there are some cuts you need to make in the front area behind the fog light grills, the condensors have to be small enough to fit under the headlights when close and for good enough air flow you have to have cut holes in the front wheel well behind the condensors.

I know someone on this board mounted some oil coolers in these locations (can't find the thread).

914 A/C reference from http://www.914world.com/bbs2/index.php?sho...=192917&hl= (thanks dlee6204).

[stugray]

I chose to put my oil coolers in series because I figured the peace of mind that it will never become "unbalanced" outweighs the relatively small difference in cooling efficiency.

I think the concept behind the series coolers being less efficient is the following:
As hot oil enters cooler 1 the cooling efficiency is proportional to the temperature difference between the oil and the air moving through the cooler.
As the hot oil is cooled by cooler #1, it enters cooler #2 at a lower temperature than when it entered cooler #1 so the 2nd cooler is less efficient.

But to me it seems like a long skinny cooler would have the same effect. The cooling efficiency goes down as the fluid travels from one end to the other anyway.

[boxsterfan]

I chose to put my oil coolers in series because I figured the peace of mind that it will never become "unbalanced" outweighs the relatively small difference in cooling efficiency.

I think the concept behind the series coolers being less efficient is the following:
As hot oil enters cooler 1 the cooling efficiency is proportional to the temperature difference between the oil and the air moving through the cooler.
As the hot oil is cooled by cooler #1, it enters cooler #2 at a lower temperature than when it entered cooler #1 so the 2nd cooler is less efficient.

But to me it seems like a long skinny cooler would have the same effect. The cooling efficiency goes down as the fluid travels from one end to the other anyway.

Stugray, how did the oil coolers end up working for you up front in this configuration? I think the results you saw will have a similar result for putting AC condensors in this area.

[stugray]

Stugray, how did the oil coolers end up working for you up front in this configuration? I think the results you saw will have a similar result for putting AC condensors in this area.

They almost work too good.
The first weekend out I used just the stock cooler and saw 260 once.
Hooked up the coolers and now never see above 220.

Full blown racing, and I havent been able to get my oil temp above 220 so far since I installed them.
But I havent had the balls (yet) to keep the RPMs in the 5-6k range for the entire 20 min race like some of the others.