Mother of all Cascades, -100ºc Dual Evap that Cools the Motherboard also!!

Printable View

Show 100 post(s) from this thread on one page

07-30-2005, 11:44 AM
extremecorvette

Quote:

Originally Posted by gokickrocks

:slobber: looks great
except for the tig welding :D

I know all the tig looks good up the last two welds in the 1st Update was done with a MIG and it's welding to a 1/4" aluminum and it's maxed out. I didn't get clean welds like I wanted but when polished up I don't think people will be looking at my welds.
07-30-2005, 11:48 AM
extremecorvette

Quote:

Originally Posted by gclg2000

Hey bud, awesome work!!

But i have a couples questions(concerns) about your design.

I dunno about doing the dual expansion valve thing on the 1st stage. I think one would be better for load balancing. I'm not the expert, but what happens when you have a large load variance on the twn HX's. Let's say you shut one of the stages off and now the heat from the 2nd HX is no longer around. The expansion valve that has no load on it now, should squeeze down as the temperatue drops and it's sensing bulb dropping the temp and causing a variance in pressure difference on the high side and could affect the other metering valve's function.

I think it might be easier and more effecient to just use one expansion valve for the 1st stage...let the 1st stage evap coil over both HX's, and then one sense bulb can adjust the capacity of the system without interferance from the other stage shutting off, or having a smaller video card load.

I just think that it may be more effecient on the 1st stage to have one expansion valve. I think the 2 valves in parallel would mess up each other's capacity functions.

If you were to do the dual expansion valve idea, i think it would prob be better to use a Constant Pressue expansion vavle instead. That way once you get the temp's were you want them with everything going, at the set pressure you assign it, the stage would be able to handle at least some ideal load @ a certain PSI or anyload less than that (even if there is no real load).

I've used a Parker CPEV (AA-A7 i think it was) on the 2nd stage of my 2nd cascade and it boom, all done for.

These are just a couple things that i've though off. And if your gonna run part #23 (the suction line HX) it would prob be best to have the sense(ing) bulbs after that HX so they can account for the load that add's too.

But by far, this is the coolest case/frame for any cascade i've ever seen.

I bow down to you for that!!

Awesome stuff

gclg2000 it's nice to to see you post, I think Chilly1 would be the one to ask many of these questions to. He is the main man when it came to the cascade system design. I'll see if I can get him to post.
07-30-2005, 01:01 PM
-(CH)-

Its getting better an better and better every day! Keep up the good work!

:toast: :toast:
07-30-2005, 04:38 PM
IYP

GJ man so far good luck for the rest of the build
07-31-2005, 04:55 AM
Waus-mod

But how cold do you want the motherboard to be? i see you want to change the caps to -70? can you explain why? becuase the motherboard wont do much with -70, or is this only for not getting condensation when youre using the evap on the cpu?
07-31-2005, 12:13 PM
extremecorvette

Quote:

Originally Posted by Waus-mod

But how cold do you want the motherboard to be? i see you want to change the caps to -70? can you explain why? becuase the motherboard wont do much with -70, or is this only for not getting condensation when youre using the evap on the cpu?

I'm shooting for -40C to -20C on the motherboard, a motherboard that can take -70C would just be safe to use
07-31-2005, 03:04 PM
pythagoras

The two first stage hx's and two expansion valves confuses me too. The head pressure and suction pressures for both txv's will be the same wont they?

Regards

John.
07-31-2005, 04:01 PM
twiggy

Holy friggin crap!!! Dude thats one hell of a setup. Nice work guys.....on everything.
:slobber: :slobber:
07-31-2005, 05:00 PM
mesyn191

Amazing workmanship, can't wait to see those results man!!

/subscribed.

edit:

You wouldn't happen to have pics of the water block and cooling system that you made BTW would you?

Thanks!
07-31-2005, 05:34 PM
Waus-mod

Quote:

Originally Posted by extremecorvette

I'm shooting for -40C to -20C on the motherboard, a motherboard that can take -70C would just be safe to use

Indeed, but still like to know for what use.. just to cool the motherboard or for stopping condensation?
07-31-2005, 06:13 PM
[XC] moddolicous

REALLY, REALLY nice. I hope u put a dothan under that and go for around 4ghz. Nest project for you = triple stage cascade that holds -150.
07-31-2005, 06:21 PM
IYP

circulatory LN2 system
08-01-2005, 08:24 AM
extremecorvette

Quote:

Originally Posted by Waus-mod

Indeed, but still like to know for what use.. just to cool the motherboard or for stopping condensation?

The main reason to to help with the overclock, it has been seen if you can cool the motherboard down you get better oc's out of the system. Most go down to -20C, no one has tried lower than -50C and been able to run it for long before the caps give out. So in one part to help with the oc and to try somthing new. It's can't hurt to try and it it does I will just back it off to the right temp.

stopping condensation is a nice thing to, just put the parts in and not to have to worry about it
08-01-2005, 01:27 PM
gkiing

Very nice work, I'm especially impressed by the quality of the case. Can't wait to see the final results!
08-05-2005, 01:34 PM
Lando95

Any updates on this Corvette?
08-05-2005, 03:19 PM
Waus-mod

Its gonna look HUGE... man still cant realize what a result can come with this cascade!
08-05-2005, 03:55 PM
extremecorvette

2nd Update 8-5-05

I caped one end of each of the expansion tanks

http://www.public.iastate.edu/~nknau...ect%20(92).jpg

http://www.public.iastate.edu/~nknau...ect%20(93).jpg

http://www.public.iastate.edu/~nknau...ect%20(94).jpg

With one end of each of the expansion tanks caped I could then attach the cap tub to make my expansion tanks.

http://www.public.iastate.edu/~nknau...ect%20(95).jpg

http://www.public.iastate.edu/~nknau...ect%20(96).jpg

After that I worked on the leads for the flatplat HX

http://www.public.iastate.edu/~nknau...ect%20(97).jpg

http://www.public.iastate.edu/~nknau...ect%20(98).jpg
08-05-2005, 03:55 PM
extremecorvette

With the leads in place I glued the foam to the HX

http://www.public.iastate.edu/~nknau...ect%20(99).jpg

http://www.public.iastate.edu/~nknau...ct%20(100).jpg

http://www.public.iastate.edu/~nknau...ct%20(101).jpg

http://www.public.iastate.edu/~nknau...ct%20(102).jpg

I bent the 1/4" leads for all the pressure gauges

http://www.public.iastate.edu/~nknau...ct%20(103).jpg

http://www.public.iastate.edu/~nknau...ct%20(104).jpg

http://www.public.iastate.edu/~nknau...ct%20(105).jpg

http://www.public.iastate.edu/~nknau...ct%20(106).jpg

I will be doing some more work on Wednesday
08-05-2005, 04:15 PM
GuGaCoSa

Looking good,looking good,itll be a pain in the butt to pressure test all that,good look hehehe.
PS:Your HX's will need way more insulation than it have now
08-05-2005, 04:56 PM
runmc

You may want to consider using captube for your pressure gauges. Easier to manipulate.
08-05-2005, 05:50 PM
matttheniceguy

Amazing work. I have a question about your degrees though. Do you already have the engineering degrees and this is some sort of masters project, or is this a project involved with one of those degrees?

I have just finnished a mechanical engineering degree at UBC, but the only real project I got to do was making a 1.3L Kubota desiel run on a dyno made for a small block chevy, while burning Biodiesel.
08-07-2005, 07:57 AM
skycrane

hell, im speachless.

and i thought all you college guys did was drink beer and try to get laid...

... wait a min thats all guys, nevermind
08-07-2005, 09:55 AM
Nosfer@tu

This is simply the wildest I have EVER seen.

have to give you credit for breching fronters like that. Way to go mate :D
08-07-2005, 12:10 PM
Cr@sh_D1n3r

Quote:

Originally Posted by runmc

You may want to consider using captube for your pressure gauges. Easier to manipulate.

That, and also acurate reading because of all vibrations, the needle won't be readable.
08-08-2005, 02:28 AM
x3ro

Wow it looks frikkin´ great.. Everything´s so tidy.. Very nice.. Cant wait to see it finished.

Regards

Show 100 post(s) from this thread on one page