Noob here...I've only owned the car for 3 weeks so still learning....
Also forgive my use of SI units - I'll try imperial and SI where I can....

My previous SLK230 had a different system.
With the new SLK32 - I was looking into a similar (but different) AC Killer chiller option myself - by actually piping the LP side gas directly into the Charge air cooler (pending pressure design and many others of course).

In relation to Waldigs original post - I think it has merit, but I would go that step further and include BB's (and others) idea of a seperate reservior as well. More on that....
In relation to the Killer chiller - it in its current form circa 2012 (given this thread is now getting "old") I have a few comments.....

Design and performance - as waldig seems to be an AC tech - I think you'll understand the idea of COP or coefficent of performance. With AC at the very least you will get 3x the energy consumed, modern inverter designs are now around the 4+ mark. That's because its actually pumping heat in the refridgerant ...not because it's breaking the laws of physics.

A note on the quoted figures below - 200Btu/min is very low. Given the AC uses around 7-8hp (4-5kW)
with a COP it should be "chilling" in the order of 3-4 times that = 15-20kW (850-1150 BTU/min)
.....okay - but I'm not an AC tech.

Air intake.....
I've done some calcs and at 750cfm and post supercharger pressure and temp of 180F (82C) and 14.5 psi boost, you've added 30kW of energy (enthalpy) via the charger. To lower this back to 122F (50C), you need to extract 15kW, but because the SC is still pumping aginst this cooler cavity - your boost is retained at 14.5psi.....fantastic - this is double gain...colder and more dense. In the cooler - the corresponding density has gone from 2.44 to 2.68kg/m3 - or in "atmospheric terms" - the equivalent of 16.8lbs of boost even though the upstream charger is oly pumping out 14.5.

Killer chiller design......
I reckon you will see these become standard on high performance cars. The use of reverse cycle AC in homes (warmer climates) etc and the improvements in design is leading to an appreciation of the benefits of the COP and increases to 5 or more maybe possible (I tink 6 something is the theoretical limit). That is - if you stick an AC pump on your crank - you can utilise the waste heat in the air to your advantage - by a factor of 4 or 5! (or3-4 when you take out the original energy consumed in this closed circuit)
It does add complexity - but as mentioned above - this will/is becoming rudimentary.

However I see some improvements - or given my Noob status - some :suggestions:.

I would put the KC after the normal IC, let the IC do 15kW of work at high dT's (using Waldigs figures below) and then clean up the tail with the KC. Set up the way they have it - once you cool the air - you run it through the IC and it could possibly even warm up again (we dream).
As stated in one of their docs the path of the coolant is
".....Reservoir – pump – heat exchanger – KC unit – intercooler – reservoir......"


(X) Waldig your idea of the Cabin air is worth merit, assuming the heater coil is downstream of the AC evaporator, otherwise it's just a simple cooler.




Now to one pentultimate design for SRT6/SLK32

• Stage 1 Split the cooling circuits and have seperate reserviors.
• Stage 2 - Pipe the intercooler water into the cabin heating and utilise the initial coooling capacity of the AC (although the cabin would get hot during racing....in my case = put the top down or open the windows) Pending the answer to (X) above.
• Stage 3 Put the KC on but after the IC and before the cabin heater.
• Utilise the Cabin/KC switch so that if the Missus is complaining - bypass the KC.

Then of course theres my initial idea of utilising the LP side of the AC (or a bigger compressor) directly into the Charge Air cooler.
But, after considering the above - and the (still outstanding) associated design/pressure risks with the direct cool option - maybe utilising the seperate circuit and retaining the IC cooling effect (by utilising the flowing air past the car)....would still have its merits