Eci 33+ - Page 4 - Overclock.net

FSF-Foxhound · 07-02-09

Getting along there, looks great!

Going to look nice in my new computer.

NoL · 07-05-09

Let me explain this picture a bit.
It's fairly hard to shove one tube inside another tube. It's especially hard as the lengths required get long and longer. When making a heat exchanger using 3/16 and 3/8" tube, it becomes an exercise in insanity.

Both tubes must be nearly perfectly straight.
That means, even the tinyiest imperfections become a problem. As you begin to push one through, friction becomes a huge problem. Even a degree or two at a tiny spot pushes parts of the tube against the inside of the other tube.
This isn't a problem with performance, simply that it becomes impossible to push one tube in any farther. You must then withdraw it, figure out what's stopping you, touch it a tiny little bit, and try again.

My method involves 5 ft long steel beams and clamps.

Clamp the tubes straight as possible.

And try.

When your looking down a 20ft long barrel though, things get interesting.
This took 3 days.

NoL · 07-06-09

And bent on up.
20" by 12". 4 loops or so tall.
Should be adequate heat exchange. And nice and easy to insulate, I hope.

Maytridy · 07-06-09

so cool

NoL · 07-06-09

Second heat exchanger rolled, CPEV's tested played. Nice and up front. They will be "separately" insulated in their own little sealed box.

Now thats sexy. And under 3 inches tall.

Maytridy · 07-07-09

wow.

what kind of torch do you use for brazing?

NoL · 07-07-09

That MAPP in post 33.
Tuned in it works fine for evaps too.

NoL · 07-08-09

Pink time!
Those CPEV's are looking beastley aren't they?

NoL · 07-08-09

I think I went a bit overboard height wise. Don't need that much! (Yay the cascade just got shorter!) I think I'll shave 2 inches off of her. Having the "low" HX in the center helps with the insulation of it. Normally -80 to -90C would require 3" of foam.

Need to get cracking on getting that condenser for the first stage, I have a back up, but it's not as pretty or dense. Then I can worry the evaporator.

NoL · 07-08-09

5 of 6 gauge kits.
2 ft of 1/8" tube on each, after brazing in an inch and a half of 1/4" tube to a tube adapator.
Will find that last bit or just pickup another while I'm at homedepot getting JB Weld for these joints. I don't like teflon tape, it's just not robust enough for me.

07-05-09	#32 (permalink)
NoL Extreme Cooler Join Date: Jul 2007 Posts: 782 Rep: 128 Unique Rep: 89 Trader Rating: 0	Let me explain this picture a bit. It's fairly hard to shove one tube inside another tube. It's especially hard as the lengths required get long and longer. When making a heat exchanger using 3/16 and 3/8" tube, it becomes an exercise in insanity. Both tubes must be nearly perfectly straight. That means, even the tinyiest imperfections become a problem. As you begin to push one through, friction becomes a huge problem. Even a degree or two at a tiny spot pushes parts of the tube against the inside of the other tube. This isn't a problem with performance, simply that it becomes impossible to push one tube in any farther. You must then withdraw it, figure out what's stopping you, touch it a tiny little bit, and try again. My method involves 5 ft long steel beams and clamps. Clamp the tubes straight as possible. And try. When your looking down a 20ft long barrel though, things get interesting. This took 3 days. __________________ I freeze things.

07-06-09	#33 (permalink)
NoL Extreme Cooler Join Date: Jul 2007 Posts: 782 Rep: 128 Unique Rep: 89 Trader Rating: 0	And bent on up. 20" by 12". 4 loops or so tall. Should be adequate heat exchange. And nice and easy to insulate, I hope. __________________ I freeze things.

07-06-09	#35 (permalink)
NoL Extreme Cooler Join Date: Jul 2007 Posts: 782 Rep: 128 Unique Rep: 89 Trader Rating: 0	Second heat exchanger rolled, CPEV's tested played. Nice and up front. They will be "separately" insulated in their own little sealed box. Now thats sexy. And under 3 inches tall. __________________ I freeze things.

07-07-09	#37 (permalink)
NoL Extreme Cooler Join Date: Jul 2007 Posts: 782 Rep: 128 Unique Rep: 89 Trader Rating: 0	That MAPP in post 33. Tuned in it works fine for evaps too. __________________ I freeze things.

07-08-09	#38 (permalink)
NoL Extreme Cooler Join Date: Jul 2007 Posts: 782 Rep: 128 Unique Rep: 89 Trader Rating: 0	Pink time! Those CPEV's are looking beastley aren't they? __________________ I freeze things.

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Eci 33+

07-08-09	#39 (permalink)
NoL Extreme Cooler Join Date: Jul 2007 Posts: 782 Rep: 128 Unique Rep: 89 Trader Rating: 0	I think I went a bit overboard height wise. Don't need that much! (Yay the cascade just got shorter!) I think I'll shave 2 inches off of her. Having the "low" HX in the center helps with the insulation of it. Normally -80 to -90C would require 3" of foam. Need to get cracking on getting that condenser for the first stage, I have a back up, but it's not as pretty or dense. Then I can worry the evaporator. __________________ I freeze things.

07-08-09	#40 (permalink)
NoL Extreme Cooler Join Date: Jul 2007 Posts: 782 Rep: 128 Unique Rep: 89 Trader Rating: 0	5 of 6 gauge kits. 2 ft of 1/8" tube on each, after brazing in an inch and a half of 1/4" tube to a tube adapator. Will find that last bit or just pickup another while I'm at homedepot getting JB Weld for these joints. I don't like teflon tape, it's just not robust enough for me. __________________ I freeze things.

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