Gas & Intercooling c'mon boys this requires some though

[Anonymous]

Hey Guys just a lil question that i think nobody has asked:

Can you run a water / air intercooler, and cycle water through the converters to the cooler then into a reservoir..

the system would also have a bypass that if water temp goes below "whatever" it will runthe water through a separater pipe that goes though a baffle in the radiator.
i saw a bmw turbo four get a -10c intake on a nine degree night with a very similar system.

i'D run a glycol mix that allows up to -19 without freeezing water.
can this be done?????

what is the temp at which lpg converts to a gas? thus keep two b2 converters from freezing....

Any answers would be great

p.s Is there some kind of secret drag racing circle that keeps this kind of system hush hush?

 

[xctasy]

what is the temp at which lpg converts to a gas? thus keep two b2 converters from freezing....

Minus 27 degrees centigrade.

 

[George]

Sound like an excellent idea..

I think running them at -19c water temp would cause the convertors external components to freeze up due to the moisture in the atmosphere.

Why not make your own cooler using LPG by directly dumping gas onto a cooling element (Air conditioner heat exchanger) and burning it off through an exhaust port. This way you can put on a firworks display whilst cooling your intercooler liquid prior to a race. You can even keep it on during the race so you look like a rocket!! - In reality I think you would loose too much LPG pressure if you did this - but you could use a seperate BBQ gas bottle for the cooling system.

Very dodgie, JUST THE WAY I LIKE IT..

These ideas could be very dangerous in the wrong hands...

Have a nice day!

G

 

[addo]

George,

That sounds like some of those camping refrigerators. Brilliant lateral thinking!

 

[Anonymous]

Good one george, but i'm looking for something economical and drivable every day.

it shouldn't matter if the outside freezes up, so long as the internals don't__they wont be exposed to external atmossphere... and so long as the lpg is fully converted to gas before entering the manifold.

keep em comin

 

[aussie7mains]

George, Ive given some thought to the idea of using the LPG as a refridgerant for an aftercooler, as youve said the bioling point of LPG is around 27c, the latent heat is very high which means that the cooling effect of the change of state is very great.
My thought was to use a Pressure Reduction valve upstream of a A/C evaporator (housed inside and airtight box) thus the LPG goes from the liquid to vapour state here, so a great cooling effect is used to cooling the hot air coming from thye turbo. When the vapour leaves the evaporator it then goes to a normal LPG convertor (second stage) and on to the mixer of choice.
I feel that the cooling effect would possibly be too great when the engine was not being boosted and some form of bypass may be needed. Some thermal calculations would be able to estimate the effect.
More discussion please.
A&M

 

[George]

A&M,

Good idead but I think there is a problem with doing what you sugest.
Even if you place a pressure reduction valve in line, the lpg pressure before and after would almost identcal due to the large restiction in the convertor. The only way to get a large enough pressure drop is to make the valve very restictive, but this will effect the full flow of gas through the convertor thus starving the engine.

Another idea for cooling the water in a Water/Air intercooler would be to fabricate and aluminium box with heatsinks inside. Place a few Peltier devices around it and cool the water electronically. This system still has the disadvantage of heat soak but could be left on between races to maintain low water temperatures.

One day someone is going to combine all these ideas and make the fastes ICE machine in the world...All you need after that is scotch!

G

 

[xctasy]

Just thinking off the top of my head, I've not researched this.

Use 5/16 ID steel tube contact welded to the headers or cast iron exhast. Fill it with oil, and run it to flow off the power steering pump. Forget water. If there is insufficent thermal cooling, hook it into an oil cooler line to the oil sender or remote oil filter, and run it like a race car set-up. This way the converter gets the best option...something that doesn't boil easily, and that is way hotter than water. Dunno how the alloy likes it, but it should be okay. I think the test pressure for the converter is 20 psi, so a pressure relief or blead back valve will be needed. But its nothing a hose fitting company couldn't do.

The performance of a vehicle is related to its oil temperature, not its water temperature. We mistakenly think about cooling the block, when the oil moving a goodness knows how many gallons per minute at 40+ psi is getting heated primarily by items asside from the combustion chamber.

I've done no calculations, but a hot brine is always able to hold its heat for long periods. Once its hot, its hot!

 

[addo]

Thought I dreamed up the Peltier intercooler a few years ago! Pretty sure the current draw for sufficient cooling (to be worthwhile) would be the catch.

The problem with throttling the intercooler gas like a true aircon system is the need for extra pressure and cooling first! You'd have an intercooler coolant cooler cooler.

Adam.