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Turbocharging With Air Conditioner Assisted Intercooler

emmott

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Just read some interesting papers from India on air-air intercooling, water-air intercooling, and refrigerant-air intercooling.
Under high engine RPM and moderate load, increase in air density across the heat exchangers was ~43%, ~75%, and ~160% respectively. The effectiveness of the air and the water heat exchangers reduced as RPMs increased while the effectiveness of the refrigerant heat exchanger had the same effectiveness across all RPM ranges. Running the AC compressor taxed ~2% tax in horsepower.
Apparently Ford patented a hybrid system where the cab AC refrigerant is redirected to an evaporator inside the air-water intercooler system reservoir. The system provided short bursts with IAT's below ambient and had a recharge time.

https://www.iosrjournals.org/iosr-jmce/papers/vol2-issue3/F0233844.pdf?id=2616
https://www.sciencedirect.com/science/article/pii/S1876610217337323/pdfft?isDTMRedir=true&download=true
https://jurnalteknologi.utm.my/index.php/jurnalteknologi/article/download/4832/3347
https://www.fordforums.com/threads/svts-supercooler-technology-explained.33176/

Now if one could fit a second AC compressor in with their belt drive...
 

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Will L.

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I am convinced a tiny one from a Honda, Toyota or something would do great.
Someone good at doing research on line could look up the top 5 most reliable small car a/c systems that run 134a so it’s the same as the truck. Then a trip to the junkyard because if they are reliable that wont be the parts getting removed. Get the compressor, 2 coils, snd sensors. Take the lines & control also not a bad idea. You have to have 3 or 4 Custom hoses made, diy the evap into your own box.

Now, keep in mind the evap is meant to have a low volume no pressure squirrel cage fan blowing through it. So you could put a LOT bigger coil (or multiple coils) and have no issue. But if you do that you can’t use the exact refrigerant measurement for the car.

Imagine having a cylindrical coil built to fit in a 4” pipe like a honeycomb then insulating it fully on the outside. Ok, back to reality.

It’s been a while since getting a/c parts from a junkyard, but it should be pretty cheap.
 

emmott

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An AC evaporator looks like it has the same fin design as an water-air intercooler, in cutaway photos both cores look similar to a car radiator but with heavier wall thickness for the liquid. I doubt they would be different metals.

An of air-water intercooler could be pressure tested to the specifications for AC condensers and if they pass they may be safe for use with AC. I found some test numbers here http://www.ivsna.com/products_show-552.html still searching for a more official spec
 
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