Re: Killer Chiller - intercooling option
WATER SIDE,,,,,
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I'm in the throes of setting up a little microcontroller with RTD's on water (1) IN (2) OUT of the main exchanger (Charge Air Cooler) + 3) one for AMBIENT
The ambient one (3) maybe an intake temp or possibly just infront of the IC behind the bumper.
I am planning to also use;
When CAC water dicharge temp (2) is greater > than AMBIENT (3) open up the path valve/s through the IC (behind the bumper). Maybe greater than ambient+3degC or something
On the way back down .....close the path to the IC when (2)<(3)minus3degC (or maybe a timer because it might not get lower than ambient by itself unless you go <30mph).
This should then look after itself.....
My thinking is...
1 ) if I turn off the AC all together from the cabin EC switch,
the HX water temps will rise and go above ambient - this would automatically open the IC path and by default use the IC under the bumper.
2) If I turn on my AC...temps go near or < ambient and IC path valve closes leaving it all up to the KC.
......So water is always flowing through the KC weather the AC is on or not.
(note to self - need to check the inchWG prs drop through the KC to ensure water flow is not significantly effected.....)
I dont see the need for a valve on either side of the IC ....just one will prevent flow through it....KISStupid - others may differ.
GAS SIDE - (The 134a side).
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A new cabin toggle switch to a new 3 way valve to run to
1) cabin+KC or
2) just the KC circuit.
Again here, (looking for advice) I don't see the need for 2x3 ways on either end of the cabin line with the 134a lowP gas side....if the gas cant go into the cabin evap....it wont come out....???? or does it (need a non return valve?)
So wouldn't you only need one 3way?
In winter OR with the top down on the SLK32 OR wanting to Race - when you dont particularly want the AC into the cabin, flick the cabin switch and all the AC goodness goes to the KC.
If you dont want to run the AC at all....switch the EC cabin switch off....the CAC discharge temps will go > ambient and the IC valve path valves open - as per stock setup - although with the added restriction of the fluid going through the KC
Sounds like a plan - comments appreciated.
Gotta get into some detail design around the AC Gas piping....
PS - I was thinking of hacking an OEM cabin heater valve pair for my fluid valve solenoids....