Goliath Triple Cooling System

Quote:

---

Originally Posted by Sweeper

Thanks for the suggestion regarding the spray foam....but TopherTony is correct. I've assembled the double wall cooling chamber with 1" closed cell insulation between the walls. It was a real pain in the a$$ to assemble! The wires for power to the components in the cooling chamber will run through a custom wire loom housing that I made. It can be disassembled to add more wires if needed for future upgrades.

---

Why no vacuum insulation? :p:

the issue with vacuum insulation is that any small tiny little hole will leak air into the chamber. Also, with all the surface area of the chamber, evacuating would probably just make the walls cave in. The only way to prevent that would be to put in some sort of spacer. But the spacer would conduct heat from the outside to the inside. Much less of a hassle to do as sweeper has done.

Quote:

---

Originally Posted by TopherTony

the issue with vacuum insulation is that any small tiny little hole will leak air into the chamber. Also, with all the surface area of the chamber, evacuating would probably just make the walls cave in. The only way to prevent that would be to put in some sort of spacer. But the spacer would conduct heat from the outside to the inside. Much less of a hassle to do as sweeper has done.

---

I know it is hard, but it would be cool though

I would love to see a picture of the wire loom and how it mounts to the metal wall without air gaps.

Also one quick question. I am assuming you are going to use copper pipe because of the pressure (though you could possibly use special braided tubing), what connector types do you plan on using ie:
Flared vs Compression
NPT vs BSP.
Ridged vs Soft copper

Quote:

---

Originally Posted by AllAgainstPaul

I would love to see a picture of the wire loom and how it mounts to the metal wall without air gaps.

Also one quick question. I am assuming you are going to use copper pipe because of the pressure (though you could possibly use special braided tubing), what connector types do you plan on using ie:
Flared vs Compression
NPT vs BSP.
Ridged vs Soft copper

---

I will use stainless line throughout the liquid loop with brass and copper fittings. All joints will be brazed, except the receiving tank will be end of the line and it will have compression fittings.

I've attached a few pictures of the wire loom as request...it may be a little confusing of how it will work, but you will get the idea once you see it installed.;)

Attachment 66750

Attachment 66751

Attachment 66752

Attachment 66753

Damn that's tight (must've missed to thread up until now).

But holy hell, you've got cash on your side for sure, and the tools to get the work done.

Keep us updated please :up:

I think I understand, you have differing size holes for the different diameter wires. 8 small holes, 2 medium size hole, and 1 large hole. You have the block split so you can put the wires through without taking off the male or female plugs.

What are the diameters of the small, medium, and large holes?

Are the two medium size holes for the pipes or are you going to have two separate holes just for them?

How do you plan to insulate the hole with and without wire going through them?

Quote:

---

Originally Posted by AllAgainstPaul

I think I understand, you have differing size holes for the different diameter wires. 8 small holes, 2 medium size hole, and 1 large hole. You have the block split so you can put the wires through without taking off the male or female plugs.

What are the diameters of the small, medium, and large holes?

Are the two medium size holes for the pipes or are you going to have two separate holes just for them?

How do you plan to insulate the hole with and without wire going through them?

---

You got the idea :yepp: The hole sizes are 1/2" to 1/4" and the two 3/8" holes are for the evaporator tubing. The insulating part is a little harder to explain. You have to keep in mind this is a double wall chamber system. The wire loom will be installed inside the inner chamber and the wires will pass through to the outer chamber. Inside the double wall system the wires will be insulated and sealed air tight. On the outer wall, there will be another insulated enclosure added for closing the penetrations on the outside chamber. Basically, there will be two insulated air tight systems for the wires.

Hope that explains it.:D

can't wait to see temps

anything new?

Awesome work, I saw some of the earlier posts and nice to see it coming along quickly. Looking forward to seeing the end result in action.

Sorry I haven't post any pics lately. I've been working on the system....but ran into a few problems. I had to completely rework the fluid distribution block and receiver tank, because they did not fit well in the cooling chamber and the Y-strainer interfered with one of the condenser coils. But, the system is starting to come together....pics will be updated soon!

I'm also thinking of changing the POE oil in the compressors. I read Solest LT-32 POE oil is designed for low temps and will extend the life of the compressor. I have a gallon of Solest 31-HE POE oil, but it is designed for medium temps and I'm not sure if I should take the chance of using the oil.

What do you guys think.....use the Solest 31-HE or buy the Solest LT-32?

Update pics as promoised!:D As stated in previous thread, I had to rework all the liquid flow parts inorder for them to fit as planned in the cooling chamber. I will start on the mobo tray and routing the wires in the chamber this weekend. I'm also working on the compressors and hope to start up the cooling chamber to see what temps it will hold after the holiday.


Attachment 67309

Distribution block and stainless lines brazed

Attachment 67310

Receiver tank installed in the chamber

Attachment 67311

Distribution block, receiver tank and evaporator installed in the chamber

Attachment 67312

Attachment 67313

Later guys ;)

great work :clap:

That block is so sexy with those stainless lines. :up:

Thanks for the compliment! Glad to see people appreciate my work. :D

Yep, WAY out of my league, wish I had those skills. Awesome work and attention to detail, can't wait to see the results!

A few more stupid questions.
Why are there 3 ports on one of your distribution blocks but 4 on another?
Will the orientation of the motherboard be vertical or horizontal?
What are the dimensions of the inside of the chill-box?
How will you seal the seam of the box to cope with sub zero temps?
Will the box have an insulated metal panel like the other sides of the box or will it have a transparent window?

If it is a transparent window:
What type of material will you use for the window?
How do you plan to control the condensation on the outside of the window?


Sorry to take up your time but this is intriguing.

Quote:

---

Originally Posted by AllAgainstPaul

A few more stupid questions.
Why are there 3 ports on one of your distribution blocks but 4 on another?
Will the orientation of the motherboard be vertical or horizontal?
What are the dimensions of the inside of the chill-box?
How will you seal the seam of the box to cope with sub zero temps?
Will the box have an insulated metal panel like the other sides of the box or will it have a transparent window?

If it is a transparent window:
What type of material will you use for the window?
How do you plan to control the condensation on the outside of the window?


Sorry to take up your time but this is intriguing.

---

When the receiver tank was originally made, I added a extra port to access the tank from outside the chamber to fill the liquid loop. Not sure I will use it....if not, I will block it off.

The motherboard will be mounted vertical like most computer cases...I want to show off all the copper blocks and some other "Bling Bling" parts.:D

The inside dimensions of the cooling chamber is 16 1/2" H x 19 1/2" W x 15 1/2" D.

Are you referring to seam outside where the two chambers were assembled? If so, the seam will be caulked with silicone.

There will be a removable 1/2" thick transparent window which is made of laminated polycarbonate ( AKA Lexan ). Laminated polycarbonate is two layers of glass heat treated together with a rubber layer between them. This makes the glass stronger and acts as insulation when exposed two different temperature conditions. The glass is used in high security facilities such as prisons and jails. I should know...I build prisons for a living.:shocked:

Hope this explains ;)

Quote:

---

Originally Posted by Sweeper

When the receiver tank was originally made, I added a extra port to access the tank from outside the chamber to fill the liquid loop. Not sure I will use it....if not, I will block it off.

The motherboard will be mounted vertical like most computer cases...I want to show off all the copper blocks and some other "Bling Bling" parts.:D

The inside dimensions of the cooling chamber is 16 1/2" H x 19 1/2" W x 15 1/2" D.

Are you referring to seam outside where the two chambers were assembled? If so, the seam will be caulked with silicone.

There will be a removable 1/2" thick transparent window which is made of laminated polycarbonate ( AKA Lexan ). Laminated polycarbonate is two layers of glass heat treated together with a rubber layer between them. This makes the glass stronger and acts as insulation when exposed two different temperature conditions. The glass is used in high security facilities such as prisons and jails. I should know...I build prisons for a living.:shocked:

Hope this explains ;)

---

Well you certainly built a nice klink to lock down your mobo :D

What can I say that has not already been said. Awesome concept...great execution...incredible display of skill..brains...coinage.

I can only hope some of that will rub off on me :)

Keep it up!

Thanks CyberDruid for the support! The members of this forum inspired me to build this system....I just put a little imagination and skill of my own into the design.:D

Great project in making.
One thing I am not sure is how much turbulance of corrugated line will add to resistance of loop. Hopefully the pump is big enough to overcome it.

Quote:

---

Originally Posted by jinu117

Great project in making.
One thing I am not sure is how much turbulance of corrugated line will add to resistance of loop. Hopefully the pump is big enough to overcome it.

---

I don't think there will be enough resistance to matter in the liquid loop, because it is design to be a high pressure system. The pump is capable of 300 PSI.....I will be running at 150 PSI. :shocked:

By the way Jinu117...great work you do on this fourm!

Thanks for the advice!

Sweeper, you sick sick sick dude! I can't wait to see this done, it's gonna be mental!

Quote:

---

Originally Posted by Sweeper

The pump is capable of 300 PSI.....I will be running at 150 PSI. :shocked:

---

How do you figure it will be running at 150 psi? and why would you want to do that?

Great work so far sweeper!

Quote:

---

Originally Posted by DetroitAC

How do you figure it will be running at 150 psi? and why would you want to do that?

Great work so far sweeper!

---

When liquids are chilled to very low temps, the liquid becomes thick and velocity is decreased. The use of high pressure increases the linear velocity. In theory....the process should be the liquid will maintain low temps without decreased velocity. :rolleyes:

Hope this explains,;)

Going to be fun trying to figure out the balance between heat dump from the pump (due to the amount of work it must do) vs advantage of speed of flow.
Any particular liquid you had in mind?

Amaxing Work

Quote:

---

Originally Posted by jinu117

Going to be fun trying to figure out the balance between heat dump from the pump (due to the amount of work it must do) vs advantage of speed of flow.
Any particular liquid you had in mind?

---

I have a back up plan if the heat dump from the pump is more than expected or the compressor can't handle the load. I will add a in line coil heat exchanger and 1/4 hp compressor to help with the cooling. :D The liquid I will be using is DowFrost Heat Transfer Fluid.... good for temps to -51C....its used in cooling industrial machinery.

Thanks for the comment. :)

Wow, viscousity of thing is damned huge....
Have you looked at others that might not have as good thermal transfer rate but have less viscousity?

Quote:

---

Originally Posted by jinu117

Wow, viscousity of thing is damned huge....
Have you looked at others that might not have as good thermal transfer rate but have less viscousity?

---

I've looked at a few heat transfer fluids...but they are very expensive and I have two gallons of DowFrost just sitting around....so, I though maybe giving it a try to see how it does. What would you suggest for a good heat transfer fluid with less viscosity?

Quote:

---

Originally Posted by Sweeper

When liquids are chilled to very low temps, the liquid becomes thick and velocity is decreased. The use of high pressure increases the linear velocity. In theory....the process should be the liquid will maintain low temps without decreased velocity. :rolleyes:

Hope this explains,;)

---

Been trying to think of a polite way to respond...thanks for the lecture on fluid mechanics ;) ...umm...I'm a mechanical engineer with 10yrs experience, I'm that guy that blew the curve in engineering fluid mechanics. Can't think of any more polite way to put it than that. It's really hard to tell who you're talking to, perhaps why Mytekcontrols has his resume in his sig? Probably cuts down on the misunderstandings?

I usually try to give someone the benefit of the doubt, and not just haul off lecturing them, sometimes it comes across like I don't know anything, because I ask questions, really I'm just trying to be polite. Like I said, you never know who you're talking to, you could have a PhD in refrigeration and 30yrs experience in low temp liquid cooling for all I know!

OK, that having been said...your pump is a vane type carbonator pump, and that means a very flat pump curve. It will force almost it's rated flow at any head pressure, and the discharge pressure will rise to what is dictated by the resistance curve of your system. Unless you've done some upfront calculations to estimate what your resistance curve will be (correct me if you have), I don't think you could estimate what the pump discharge pressure will be. Plugging in a pump that is rated for high pressure, does mean high pressure will exist, the intersection of the pump curve and the system curve determines what pressure will exist. (you can now impress me by posting these curves)

Carbonator pumps sometimes require a positive pressure at the pump suction port to keep from cavitating. If you have such a pump, unless you are externally pressurizing the system or using an expansion tank and a closed system, you will cavitate the pump.

This is offtopic but as DetroitAc seems to be the pump man ill ask here.

I tried to pump dryice cooled methanole with grundfos ups 25-40 but when methanole got cool enough, (like under -50c or something, dont know exactly) the flowrate got down to zero. I assume this happened due cavitation. I heard some speculation that there is water in methanole which causes this but i dont understand the effect.

In school we have been teached that cavitation possibility happens in high temperatures. Closer the boiling point in current pressure, higher the cavitation possibility (which seems very reasonable).

Any ideas?

http://www.ecopumpen.de/pd-2124594576.htm?categoryId=4

Let's try to keep this short so we don't hijack Sweeper's thread, as it's pretty much his build log.

If your pump was cavitating you would hear the motor speed increase (since it's load is reduced, and it usually gets louder. I don't have any references that list the boiling point of methanol/water solutions as a function of pressure, but you can probably find them by googling. Cavitation is very easy to happen with highly viscous fluids if you have too much pumping capacity compared to suction hose area and suction hose pressure head. You are correct that being close to the boiling point also makes it easy to happen. Other than these very broad statements, I don't know how to help other than say Yes, maybe it was cavitation. :shrug:

Quote:

---

Originally Posted by DetroitAC

Been trying to think of a polite way to respond...thanks for the lecture on fluid mechanics ;) ...umm...I'm a mechanical engineer with 10yrs experience, I'm that guy that blew the curve in engineering fluid mechanics. Can't think of any more polite way to put it than that. It's really hard to tell who you're talking to, perhaps why Mytekcontrols has his resume in his sig? Probably cuts down on the misunderstandings?

I usually try to give someone the benefit of the doubt, and not just haul off lecturing them, sometimes it comes across like I don't know anything, because I ask questions, really I'm just trying to be polite. Like I said, you never know who you're talking to, you could have a PhD in refrigeration and 30yrs experience in low temp liquid cooling for all I know!

OK, that having been said...your pump is a vane type carbonator pump, and that means a very flat pump curve. It will force almost it's rated flow at any head pressure, and the discharge pressure will rise to what is dictated by the resistance curve of your system. Unless you've done some upfront calculations to estimate what your resistance curve will be (correct me if you have), I don't think you could estimate what the pump discharge pressure will be. Plugging in a pump that is rated for high pressure, does mean high pressure will exist, the intersection of the pump curve and the system curve determines what pressure will exist. (you can now impress me by posting these curves)

Carbonator pumps sometimes require a positive pressure at the pump suction port to keep from cavitating. If you have such a pump, unless you are externally pressurizing the system or using an expansion tank and a closed system, you will cavitate the pump.

---

First of all, thanks for being polite with your comments. I'm definitely not a expert in fluid mechanics... but, I have research many sources to find most commercial chillers use Vane type pumps for circulation. Its impossible to determine the resistance curve and fluid pressure without the proper diagnostic equipment. I can only experiment with different pumps and monitoring devices to find which is best for circulating the low temp fluid. I hope to accomplish a high pressure system.... but, the main goal is to circulate the fluid and maintain low temps.

If I start having problems with the system....atleast I know you can possibly give me a few pointers. ;)

Gotta love it when advices are given politely and taken politely... :) I am seriously looking forward to where this is going :)
Kudos to both of you guys :) :up:

truly extreme - i can't wait to see the results

Well, I've completed one compressor and currently working on the other. I've decided to not hook up the compressor to the plate heat exchanger, until the second compressor is installed in the case. As you can see in the pics....I may have to rearrange a few components to make sure everything will fit in the case and I have access to complete both system.

Insulating the lines will be a nightmare!:eek:

Attachment 67928

Attachment 67929

Attachment 67930

Attachment 67931

Very nicely built condensing unit there :)

Everything is very nicely built.

:up: to your planning and execution.

Nice build :up:

But why a desuperheatercoil? Or is it something else?

Thats is a DSHC, adds a bit more cooling range but also take the viberations out from the compresser.

Very very neatly done, im mega impressed dude

Quote:

---

Originally Posted by Pete

Thats is a DSHC, adds a bit more cooling range but also take the viberations out from the compresser.

---

I know what is it ;) . I asked why he uses it. I don't think it is needed with the condensors he is using, and I think it is ugly (but that's just personal)

You use it for antivibration too. Maybe thats why?

Great looking unit there mate, if everything is as clean as it's been so far you'll be up there next to Cold_ice and Bazx in my top cleanest builders :D

Quote:

---

Originally Posted by bassie

I know what is it ;) . I asked why he uses it. I don't think it is needed with the condensors he is using, and I think it is ugly (but that's just personal)

---

It was added for more cooling and vibration. I know a couple of loops would be plenty for vibration and I'm sure the condenser will do just fine....but I got on a roll and ended up with more than a couple loops. :D As far as the appearance....I like the way it looks. :rolleyes: I guess everyone has there own preference when it comes building custom systems.:shrug:

Quote:

---

Originally Posted by Sweeper

I guess everyone has there own preference when it comes building custom systems.:shrug:

---

Your right, it is just a thing i would have done different. Personal matter.

Succes with your build :)

This thread is great. The project is great!

The less you have on length there better it is... but since it will be chiller.... probably won't matter too much :)

Quote:

---

Originally Posted by jinu117

The less you have on length there better it is... but since it will be chiller.... probably won't matter too much :)

---

I'm curious to know why less tubing between the compressor and condenser is better. Correct me if I'm wrong...but I thought better cooling for the hot gas during cycle would result in lower temps.

Quote:

---

Originally Posted by Sweeper

I'm curious to know why less tubing between the compressor and condenser is better. Correct me if I'm wrong...but I thought better cooling for the hot gas during cycle would result in lower temps.

---

More refrigerant so higher pressures i think.

Quote:

---

Originally Posted by bassie

I know what is it ;) . I asked why he uses it. I don't think it is needed with the condensors he is using, and I think it is ugly (but that's just personal)

---

Alright alright, i think it's stunning compaered to some i have seen.

Quote:

---

Originally Posted by bassie

More refrigerant so higher pressures i think.

---

More also allows for more load tuning as well.

WOW....very Nice Clean, quality Workmanship:clap: :clap: You get a Cigar from me:up:

Sure, there might be more refrigerant when there is longer tubing, but more tubing also means higher volume.

Maybe it has something to do with too much tubing on the high side and not just too much tubing in general.

Thanks guys for the information. I was thinking of adding a Suction Accumulator.... would there be any advantages to the system?

Lower static pressure and less chance of floodback.

[QUOTE=n00b 0f l337;2591200]Lower static pressure and less chance of floodback.[/QUOTE

Is this a good thing or not needed in my system?

Can't hurt persay, more bout room. With constant heat loading systems (like chillers where you have a large specific heat of liquids), you wont need it all that much.

What kind of refrigerant flow control are you going to use Sweeper? TXVs? Cap tubes? other?

The load will be changing when the refrigeration loops are running, but you'll likely have a lot of thermal inertia (chiller res). Accumulators used for control of floodback are helpful at catching the liquid from an overfeeding situation, and if designed correctly they can store excess liquid on the low side of the system.

Downside of them is cost, complexity, space, potential to hold up oil and suction side pressure drop.

I will be using TXVs.....so, I'm guessing the accumulators will not be necessary.

it cannot hurt

I have twins!:D It was tight, but they fit nicely in the case.

Attachment 68053

Attachment 68054

Aw how cute ;)

WOW amazing

Update pics of some the work I've been doing on the system. I know progress is slow, but as I stated in the beginning.... I'm making most of the parts myself and it takes time to do everything as planned. Hope you guys hang in there until this thing is finished!:D

Attachment 68212

Attachment 68213

Attachment 68214

Attachment 68215

that is the greatest thing i have ever seen :o keep it up m8!

Just to be sure... that whole compartment on the bottom, thats going to be ambient temp air, right? Just the top, smaller box is going to be chilled?

Thanks Knightwolf! I'll keep you guys posted with the results. Hope to fire this baby up soon!:D

Quote:

---

Originally Posted by Polizei

Just to be sure... that whole compartment on the bottom, thats going to be ambient temp air, right? Just the top, smaller box is going to be chilled?

---

Thats right. The bottom section will only have exhaust fans to move hot air out of the case and the top section will house the cooling chamber, water loop for hard drives and controller.

Alrighty.

Whats the deal with the huge coil of wire in the bottom right in the last picture?

Once Again More Questions:

01. You mentioned cooling the Hard drives in the first post, Will that loop be separate from the high pressure/low temp loop?

02. Have you decided on the parts yet (Motherboard, CPU, GPU, RAM, HDDs, PSU)?

03. Which sides are the front and back of the case?

04. Are you going to mount the PSU directly to the aluminum side or are you going to make a cradle/carrier for it to be supported by?

05. Is the bottom compartment bowing/warping downward due to the weight of the compressors or is it an optical illusion?

06. If it is not an illusion do you trust in the strength of the current case or will you reinforce the bottom with crossbars or some other method?

07. What type of pressure and temperature measuring devices are those and where can I find more details about them?

08. What diameter copper pipe is that?

09. Are you using flared fittings on the copper pipe?

10. If 09 is yes, what is your method of leak testing for flared fittings with odorless gases?

I use a spray bottle of VERY soapy water and look for bubbles around the fittings when I work with propane. It works most of the time but I wonder if your technique is any more reliable.

AllAgainstPaul

I think Sweepers 1st post told us about it all of some of your QU's but here are few point i pulled!

Quote:

---

Originally Posted by Sweeper

1. The custom case is fabricated from aluminum and will be designed to house three cooling systems. This case is very large 48” W x 48” H x 18” D. This will not be something you can put on a computer desk. :shrug:

2. There will be two ½ HP compressors with R507 refrigerant cooling two different systems. I’m hoping to get the temps down to around -40 for each system.

3. The first cooling system will cool down a low temp heat transfer fluid to -40 that will remove heat from the CPU and two video cards. Each component will have separate cooling loop.

4. The second cooling system will cool down a custom air tight chamber, which the motherboard, CPU and video cards will be mounted. The idea is to keep the air inside down to -40 and not have to insulate any of the components. Also, the ram and chipset will be cooled by the circulating -40 air in the chamber.

5. The third cooling system will be a water loop outside the cooling chamber that will cool four hard drives, due to hard drives do not operate well under low temperatures.

---

I just had thought. If the pump does produce the 150+ psi of pressure you could design an ultra restrictive impingement-cup blocks similar to Cather's Storm Blocks but tuned for a more powerful pump like yours.

Quote:

---

Originally Posted by AllAgainstPaul

Once Again More Questions:

01. You mentioned cooling the Hard drives in the first post, Will that loop be separate from the high pressure/low temp loop?

Hard drives will have separate water loop.

02. Have you decided on the parts yet (Motherboard, CPU, GPU, RAM, HDDs, PSU)?

I will be using my current AMD system for testing and will change to Intel system after testing is complete. I want to run SLI setup, so I'll probably wait to see how the 780i board reviews go. CPU will probably be 9650.

03. Which sides are the front and back of the case?

I will be using the side that is in the posted pics. I've decided to use three view windows for the system.

04. Are you going to mount the PSU directly to the aluminum side or are you going to make a cradle/carrier for it to be supported by?

The PSU's will be mounted in there on rack in the top section of the case.

05. Is the bottom compartment bowing/warping downward due to the weight of the compressors or is it an optical illusion?

The bottom section is reinforce with cross tubing and no it is not bowing. The pics for some reason turns out smaller and distorted .

06. If it is not an illusion do you trust in the strength of the current case or will you reinforce the bottom with crossbars or some other method?

07. What type of pressure and temperature measuring devices are those and where can I find more details about them?

The mounting plate I made....the gages are Yellow Jacket and dual pressure switch is made by Johnson Controls.

08. What diameter copper pipe is that?

Not sure which pipe you are referring to?

09. Are you using flared fittings on the copper pipe?

Flare and brazed.

10. If 09 is yes, what is your method of leak testing for flared fittings with odorless gases?

Soap and water to start.....but I will be checking for pressure drop with micron gage.

I use a spray bottle of VERY soapy water and look for bubbles around the fittings when I work with propane. It works most of the time but I wonder if your technique is any more reliable.

---

Hope this answers your questions.;)

Quote:

---

Originally Posted by Polizei

Alrighty.

Whats the deal with the huge coil of wire in the bottom right in the last picture?

---

The wire is for the six fans on the condenser, which will be routed up to the top section of the case.

Ah, I see.

Fantastic work with everything. :clap: :up:

You better hook that thing to an x48 board and a QX9770. Anything less than that...

I finished milling the CrossFlow water blocks and thought I would share a few pics. :D

Attachment 68489

Attachment 68490

Attachment 68491

Attachment 68492

Attachment 68493

I gotta say this... to see you spend this much time, effort, and money to build this amazing cooling system reminds me why I need to build my next rig around a 'cooler' rather than the other way around.

Really nice, we are waiting to see finished product.

Regards

Man you keep topping yourself...I have to wonder :what next???

my eyes have honestly never seen anything even close to that in beauty.:shocked:

GREAT WORK YOUR MY HERO:clap: :clap: :clap: :clap: :clap: :clap:

I just stumbled across this thread and i have to say... :o beautiful!

I just want to see it working well unlike one major cascade endeavour that never worked (it looked beatiful too). Be persistant :)

Thanks guys for the encouragement....I will finish this thing with a little luck. ;) The major problem I see is wiring the controller to cycle the compressors. Does anyone have experience with wiring multi zone controllers? I have a Minco CT124 8-Channel Temperature Monitor and manual, but I'm not that good with wiring HVAC controls.

Any help would be greatly appreciated!

Excellent build sweeper, your fabrication skills are amazing. Just one observation, your insulated chamber, you don't seem to have a thermal break between the inner and outer shell where they are joined together (where the lid will seal on the box). This will allow heat to travel through the metal/alloy and into the inner chamber. Whilst this probably won't have much effect on your temps, it will result in condensation forming around the lid seal. All coldrooms and freezers have a plastic section where the inner skin meets the outer skin to prevent this, commercial freezers even have a heater cable in this plastic section to help prevent condensation better, and they only run at -10 to -25c, you're planning on running -40. I think you also might run into trouble with your polycarbonate lid, I think it will allow too much heat into your inner chamber, and I think you'll have a lot of difficulty reaching the desired temp. By comparison armaflex insulation has a thermal conductivity of 0.036-0.04 W/m.k, whilst polycarbonate is around 0.19-0.22 W/m.k (around 6 times higher). If you use a bigger compressor to achieve the temp, you may then have problems with condensation forming on the outside.
Also, how do you plan on regulating the water pressure to 150psi???
Anyway, best of luck with the build, you've got a seriously hardcaore set up there :hehe: :clap:

Quote:

---

Originally Posted by aussie_guy00000

Excellent build sweeper, your fabrication skills are amazing. Just one observation, your insulated chamber, you don't seem to have a thermal break between the inner and outer shell where they are joined together (where the lid will seal on the box). This will allow heat to travel through the metal/alloy and into the inner chamber. Whilst this probably won't have much effect on your temps, it will result in condensation forming around the lid seal. All coldrooms and freezers have a plastic section where the inner skin meets the outer skin to prevent this, commercial freezers even have a heater cable in this plastic section to help prevent condensation better, and they only run at -10 to -25c, you're planning on running -40. I think you also might run into trouble with your polycarbonate lid, I think it will allow too much heat into your inner chamber, and I think you'll have a lot of difficulty reaching the desired temp. By comparison armaflex insulation has a thermal conductivity of 0.036-0.04 W/m.k, whilst polycarbonate is around 0.19-0.22 W/m.k (around 6 times higher). If you use a bigger compressor to achieve the temp, you may then have problems with condensation forming on the outside.
Also, how do you plan on regulating the water pressure to 150psi???
Anyway, best of luck with the build, you've got a seriously hardcaore set up there :hehe: :clap:

---

Thanks for your observation....you have a point about the inner and outer metals joining at the corners. The inner and outer chambers are separated with 1" Armaflex and don't make contact, except at the corners where they are joined together. I was going to seal the joint with silicone and apply a layer of insulation tape......but, this still would not prevent the cold temps inside the chamber from transferring through the joining metals to the outside. So, now I guess the two metals will need to be separated for a thermal break. I will use 1/8" seal tape between the two metals to break contact. Hopefully, this will do the trick! :D Thanks for pointing it out.;)

As I stated in a previous thread....the lexan that I will be using is multi layer laminated glass, which acts as a thermal break between each layer. So, I shouldn't have a problem with heat transfer to the inner chamber.

As far as regulating the pump pressure....the pump has a built in pressure adjustment.

Thanks again :up:

Quote:

---

Originally Posted by Sweeper

As far as regulating the pump pressure....the pump has a built in pressure adjustment.

Thanks again :up:

---

it does? how does it do that? I would have thought that the pressure the system ran at was dependent soley on how much restriction the system provided, unless you introduce a restriction (Pressure sustaining valve, orifice plate, or a manual valve partially closed.

Keep up the good work

any more updates? i really do like your setup and youve helped me decide on building my own custom case i mean why buy something when you can make it to how oyu want it. any good luck on the rest of the build

Its been a busy month at work, due to the Holiday's and haven't gotten much completed on the system....but I have been working on making some parts in my spare time. I will be working on the motherboard tray and wiring after the Hoilday....so hope this thing will come together soon. I have manage to complete the liquid distribution system for the cooling chamber....

What do you guys think of my design for distributing the liquid? :rolleyes:

Attachment 69122

Attachment 69123

Attachment 69124

Attachment 69125

Attachment 69126

Hope all you guys have a Merry Christmas and Happy New Year! :D

It's looking very industrial--yet sexy ::D

Merry Christmas to you too:up:

Do you plan to cool the sides or the top with your HDD block?
One great side cooling custom block AussieJester Made.

is it wierd I got a chubby looking at that? :/

that is great, you amaze me everytime you post an update

Quote:

---

Originally Posted by AllAgainstPaul

Do you plan to cool the sides or the top with your HDD block?
One great side cooling custom block AussieJester Made.

---

its not recommended that you cool your hds down that low due to errors that can occure etc its best to just put a passive or acting heatsink on them

Quote:

---

Originally Posted by Sweeper

5. The third cooling system will be a water loop outside the cooling chamber that will cool four hard drives, due to hard drives do not operate well under low temperatures.

---

I was referring to this loop when mentioning AussieJester's HDD Block

Quote:

---

Originally Posted by AllAgainstPaul

I was referring to this loop when mentioning AussieJester's HDD Block

---

water cooling it like this would be fine but not what sweeper is building temps are going to be -0c which isnt to good for the hd. if you want to spend the money on a set up like the one you posted that will do fine

Quote:

---

Originally Posted by AllAgainstPaul

Do you plan to cool the sides or the top with your HDD block?
One great side cooling custom block AussieJester Made.

---

The hard drives will be cooled from the top side with a single closed loop water system. The heat will be removed from the water with two fans and radiator outside the low temp cooling chamber. The water block will be between two hard drives assembled together. I have two water blocks, so they will be looped together for cooling four hard drives.

As they say....picture is worth a thousand words.:D

Attachment 69207

Attachment 69208

Attachment 69209

Attachment 69210

Very clever with the HD blocks man.

As far as the distributor... simply amazing. One question though: Why copper? It looks amazing, but won't the copper just let more heat into the loop? On top of being more expensive? Other than face of the blocks, wouldn't you want everything made out of a good insulator?

/subscribed.

Sweeper, your sheet metal fabrication as well as various other skills are just flat out amazing.:clap: :yepp:

MMM! Just saw this and subscribed!

Those old Polarflo HDD blocks are solid, but do not interface with drives well. What do you plan to use as a TIM?

Merry xmas as well!

Quote:

---

Originally Posted by joecop120

MMM! Just saw this and subscribed!

Those old Polarflo HDD blocks are solid, but do not interface with drives well. What do you plan to use as a TIM?

Merry xmas as well!

---

I was planning on using heat conductive thermal pads between the HDD and water block. I've found a few on the web...but I'm open to suggestions.