Intercooler water spray - Is too much water bad?

[Mik]

I still dont think the guys question has been answered.  He is asking is TOO MUCH water bad.  

And out of interest how bad would it be to put say metho or something similar in the water mix?  As this would bring temps down even lower correct?

It has been answered. A fine mist is the only way to do it.

The metho/water mix will actually have less of a cooling effect. The reason for this is that the intercooler cools when the water evaporates because the evaporation of water absorbs energy.

The metho/water mix will evaporate with less energy absorbtion.

[dangerous_daveo]

It has been answered. A fine mist is the only way to do it.

The metho/water mix will actually have less of a cooling effect. The reason for this is that the intercooler cools when the water evaporates because the evaporation of water absorbs energy.

The metho/water mix will evaporate with less energy absorbtion.

Ok, not having a go, but I've read on a simliar topic that they metho cools more, like potentally can bring the temps below frezing. Such as you put metho on your hands, it instantly feels cool.

[Mik]

Ok, not having a go, but I've read on a simliar topic that they metho cools more, like potentally can bring the temps below frezing.  Such as you put metho on your hands, it instantly feels cool.

That's because your hand is not a large source of heat energy like the intercooler is.

[dangerous_daveo]

That's because your hand is not a large source of heat energy like the intercooler is.

Can you or someone else please elaborate (sp?) on that a bit more please? I like to understand how things work, not just take it for granted.

[Mik]

Can you or someone else please elaborate (sp?) on that a bit more please?  I like to understand how things work, not just take it for granted.

Your hand can't supply enough heat to evaporate the water off it immediately.

When I had the water spray in my Subaru, if I went for a hard drive with the water spray on, the intercooler would stay bone dry because the water would evaporate before it even touched the cooler.

[Guilt-Toy]

You want the mist to be as fine as possible. On my subaru, I had a water spray set up that used very fine nozzles. The way it was set up, a very fine mist was sprayed in the the bonnet scope in front of the intercooler. The water would vapourise as soon as it touched the coooler or even before, therefore cooling the air.

I have seen a few people do tests on the track. Someone found that garden nozzles which used about 1L/min actually cooled the intercooler much less than misting nozzles which used one twentieth of the water.

When I set mine up, I used three brassnozzles designed for evaporative cooling which I imported from the US. The nozzles are made specifically for cooling sports stadiums and the like.

If anyone is interested, I still have the whole kit inlcuding nozzles, adjustable hobbs pressure switch, relays, switch and a custom made electronic controller which holds the pump on for 5 seconds after boost drops (keeps the pump going between gears). I'm willing to sell this kit as I no longer need it.

Ok This is the answer i was looking for.

I use a 4 litre polished aluminium can that sits infront of the drivers side wheel mounted on the bumber bar where you bolt it on the main support.. I am running a VS conformadore pump (17 from auto pro) with a cheapo stop check valve and garden sprayers.. hooked up to a hobs pressure switch that turns on at 6psi of boost.

My intercooler is getting drenched with water and i was thinking that maybe the intercooler is heating the water and causing the engine to knock when it shouldnt. I was also thinking that only a slight mist would be better.

Now i need to know where i can find some of those Nozzles you talk about. How much they are and where you got them from.

If you used your rear wiper motor washer then you could set this up very easlily and cheaply.. just have fun lookin for nozles cos ive looked for mist ones in oz before... you can only get ones that spray tooo much water.

[Guilt-Toy]

Group buy maybe ????

[wrxhoon]

Group buy maybe ????

When I set mine up, I used three brassnozzles designed for evaporative cooling which I imported from the US. The nozzles are made specifically for cooling sports stadiums and the like.

this may answer your question

[ed]

Would this work?

http://www.mossproducts.com.au/WateringSys...nge/g310-qb.htm

needs 200kpa though...

[Mik]

I have looked for the company that supplied my nozzles, and they don't seem to exist anymore.

I nozzles I bought cost me about $12 each from memory including shipping. So they were preety dear.

I might have a few spares, cos I ordered a fair few of them.

[ed]

Mik, do yours look like these?

http://www.mistymate.com/noz-thd.html

[Guilt-Toy]

I have looked for the company that supplied my nozzles, and they don't seem to exist anymore.

I nozzles I bought cost me about $12 each from memory including shipping. So they were preety dear.

I might have a few spares, cos I ordered a fair few of them.

Would i be able to get 2 or 3 off you ?

[Guilt-Toy]

Would this work?

http://www.mossproducts.com.au/WateringSys...nge/g310-qb.htm

needs 200kpa though...

Yeah well i dont think the VS windscreen washer motor would be able to push that much power.. I mean the V6 running the whole VS couldnt create that much pressure :sly:

[ed]

Autospeed have some brass ones.

You could also go to poultry supply places as some of these nozzles are used to cool hen houses and pig pens. I think they call them fogging nozzles instead of misting nozzles.

[666DAN]

You can hook these up with a peltier cooler too....drops the water temp to around 4 degrees...so a nice cool mist to start with

[b2barker]

wouldn't it minimise heat soak when you are sitting @ the lights?

1) If you have a top mount (WRX) or front mount close to radiator you would get heat soak. In a stock GTST side mount cooler, I wouldn't have thought you would get much as it outside of the engine bay.

2) As others mentioned its the evaporation that does most of the cooling. The evap is aided by air flow. Unless it very windy or you have a fan, it won't cool much when you are stationary, but if you wet it stationary it will cool once you take off.

3) The system talked about here sprays on boost (pressure switch triggered) and for short time after so it wouldn't help a cooler heat soaking at the lights.

4) When you are @ the lights you are off boost (unless your packing some anti-lag). Your cooler would cool from the inside, ie. ambient temp air goes into the cooler, and comes out hotter if you cooler is already hotter than ambient.

The metho/water mix will actually have less of a cooling effect. The reason for this is that the intercooler cools when the water evaporates because the evaporation of water absorbs energy.

Water has a higher latent heat of evaporation than metho, ie. it absorbs more heat when it evaporates. However metho evaps at a lower temp/pressure though so it evaporates more. Metho/water mixes are more effective in water injection systems than straight water. I wouldn't be spraying combustables around my engine bay though.

If you were going to spray your cooler I would look at a temp triggered spray rather than pressure switch triggered, like the one at the Autospeed shop. Water injection is a better option if you ask me.

[Trust33]

Water has a higher latent heat of evaporation than metho, ie. it absorbs more heat when it evaporates. However metho evaps at a lower temp/pressure though so it evaporates more. Metho/water mixes are more effective in water injection systems than straight water. I wouldn't be spraying combustables around my engine bay though.  

If you were going to spray your cooler I would look at a temp triggered spray rather than pressure switch triggered, like the one at the Autospeed shop. Water injection is a better option if you ask me.

That is a better possibility than a pressure activation to me also.Reason being how many other things have you got running from a pressure source going from turbo to plenum.Gauge,Boost controller,aftermarket gauge it all adds up giving a less quick respone time to the vitals of the water spray system.Give the pressure side of things bit of a rest.The autospeed system is way more accurate but on the other hand is also way more expensive than what some are prepared to pay.

You could go like autospeed and use the controll box with numerous sensors one of which being an injector ohms/duty cycle, activation switch with a memory delay built in for compensations which save the life of the pump and make more accurate use of the water....I think it actually memorises the cycles of the engine and from those numerous sensors can give accurate and controlled sprays.

No matter what,You will get heat soak at the lights because you need flowing ambient air to cool with the water.Unless you have a front mount with a fan sucking the cool air in,it would not be a waste of time for those launches at the lights where by the time you are in 3rd - 4th gear it would have a great cooling temp to run on.

Try this!! thermo wrap the bottle and remotely mount it.Have you ever taken your frozen bottle of water to school wrapped in a tee-taal..It stays like a block of ice and does not loose much of its integrity/ice form...Now wrapped in a thermal insulation it would be a killer combo for cold running water.And would also work in the engine bay but not to the degree where it would be as cold as what it would be if it were in the boot.

:type: :type: :type: :type: :type: :type: :type: :love:

[Guilt-Toy]

My bottle is mounted infront of the plastic air vent in the mspec front bar so it gets all the cool air cooling it down. Might try the thermal wrapping but it looks cool in there being polished alloy and all

[dangerous_daveo]

.........

Water has a higher latent heat of evaporation than metho, ie. it absorbs more heat when it evaporates. However metho evaps at a lower temp/pressure though so it evaporates more. Metho/water mixes are more effective in water injection systems than straight water. I wouldn't be spraying combustables around my engine bay though.  

If you were going to spray your cooler I would look at a temp triggered spray rather than pressure switch triggered, like the one at the Autospeed shop. Water injection is a better option if you ask me.

Thats pretty much what I was thinking, as I still have the side mount the metho probably wouldnt be much of a problem, and I dont intend on doing any further major mods for quite sometime, hence the question.

Thanks.

[666DAN]

Thses are only $37 and run off 12V....only 1L capacity...but you could run a larger tank into this...which would still cool down quickly.

Picture of peltier tank

Other peltier stuff

You could even bond a load of peltiers straight to your intercooler and it'd stay nice and cool....but when they are switched off you get heat-sink back into your cooler, so they'd be better if they were constantly switched on