Dan's TUFFET picture update

photoglossy · Post by **photoglossy** » Mon Jun 29, 2009 4:07 am

Any idea on intake temps with that thing?

JETETT · Post by **JETETT** » Mon Jun 29, 2009 7:29 pm

nice work... cant wait 2 see this thing hit the track again

Sabri · Post by **Sabri** » Tue Jun 30, 2009 11:29 am

i love this thing..

sleeper_et · Post by **sleeper_et** » Tue Jun 30, 2009 11:24 pm

Thanks for the comments guys.
Air intake wise just having it at idle for a couple of minutes we saw -10 but we expect it to go down a fair bit more.
We didn't pack the cooler properly so with it packed right it should drop the temps a heap more.

Cheers

Kimmo · Post by **Kimmo** » Wed Jul 01, 2009 12:55 am

Hm, given that ice conducts heat almost four times better than water and almost 91 times better than air, have you considered topping up your dry ice with water?

photoglossy · Post by **photoglossy** » Wed Jul 01, 2009 4:14 am

it would just turn solid wouldnt it? haha

TurboZ.Dude · Post by **TurboZ.Dude** » Wed Jul 01, 2009 4:41 am

Wouldn't that in turn cause the intercooler to crack?

photoglossy · Post by **photoglossy** » Wed Jul 01, 2009 11:53 am

Depends if the top is sealed tight or the ice can expand out the top. I'd say it probably would crack...

By all the ice on the piping as is, there probably isnt any need for extra cooling anyway

Kimmo · Post by **Kimmo** » Wed Jul 01, 2009 6:50 pm

Doubt it'd cause anything to crack; you'd just pour it in slowly and it'd freeze as you were pouring it in.

I reckon it'd kick arse. Though you'd need to add more dry ice sooner...

Post by **Ash** » Fri Jul 03, 2009 7:09 am

i think just the dry ice will do the trick just fine.

getting very close now!

Callumgw · Post by **Callumgw** » Fri Jul 03, 2009 7:58 am

I don't think adding water (lowest temp =0degrees) to dry ice (CO2 at -75ish) would do much except raise the temperature and melt the dry ice.

or if you sealed the container, it'd be a bomb.

C

Kimmo · Post by **Kimmo** » Sat Jul 04, 2009 4:19 am

Sif water can't go below 0 degrees when it's frozen!

Sure, you'd lose a bit of the cold, but I don't reckon the dry ice would necessarily melt.

It'd be an interesting experiment, anyway

Callumgw · Post by **Callumgw** » Sat Jul 04, 2009 6:49 pm

Kimmo wrote:Sif water can't go below 0 degrees when it's frozen!

but then it's not water and the increased heat conduction advantage changes.

Kimmo wrote: but I don't reckon the dry ice would necessarily melt.

really? why wouldn't it continue to melt? and with the claimed 4 times greater heat loss why wouldn't it happen faster?

do a search on dry ice and you'll see it seems to give more gas of (ie "melt") when they put it in water. I think this is the key to the dry ice bombs. (but I may be wrong)

C

Kimmo · Post by **Kimmo** » Sat Jul 04, 2009 11:38 pm

Kimmo wrote:ice conducts heat almost four times better than water and almost 91 times better than air

And sure, the dry ice would melt faster, since heat's going to be conducted into it quicker. I meant that if you add the water slowly, that process shouldn't melt your dry ice too much.

The dry ice bomb thing happens when you chuck a chunk of dry ice right into the water; I'm sure you could create a chunk of dry ice surrounded by water ice, though... the water would add a lot of heat to the dry ice and some of it would melt, but the water ice would go below zero down to the temperature of the remaining dry ice.

I guess the question is what would happen to the escaping CO2... could well become a bomb, I spose. Also there's the possibility of the water ice failing to conduct much into the dry ice cause it may be surrounded by a blanket of CO2...

Anyway, I reckon it's gotta be worth a try... though establishing proof of the concept would be the go before risking a nice chunk of aluminium fabrication, obviously

Post by **tassuperkart** » Mon Jul 06, 2009 1:28 pm

I have a feeling that you cannot reduce the temp of water below zero.. (It freezes above that) Same as you cannot boil it any higher than 100 deg.C (depending on pressure)
I think the whole exercise would be a moot point even if you got the water to freeze.

Factoring in the expansion rate of water freezing to ice, id predict that the cooler core would possibly be broken apart anyway.

Theres quite a bit of horsepower in that expansion. Enough to easily break apart a cast iron engine block.
This is why you add ANTI-FREEZE to cooling systems...no?

I think if you want something like this to get real cold then Id be filling it with liquid nitrogen.
Thatll get it cold without getting funky!
L8tr
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