Well i don't see the point of pelts if your getting temps to about -20...
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Well i don't see the point of pelts if your getting temps to about -20...
Does that mean you could build a single stage system but charge it with a high pressue cascade low stage refrigerent and put the condenser in a chiller res?Quote:
It would make more sense to use an aircooled pelt to replace the condenser on a direct die system, thus making it the high stage for a cascade system, but then the problem is surface area. The small surface area on the cold side makes heat exchange extremely difficult. Possibly this could be done with many small pelts covering a large surface area.
Yes, but you better make damned sure the coolant in the res is very cold before the low stage compressor starts, and if that coolant warms up for any reason, the low stage compressor better shut off. This takes safety controls. You might want to take a look at DaBit's cascade. He has it covered every which way.
Also, there better be enough internal volume to hold down the static pressure.
If the pressure builds up too high: Best case scenario, the valves break inside your compressor. Worst case scenario, you find parts of your computer imbedded in the walls of your room, hopefully not soaked in blood.
:lol: Could a cascade 5 feet away from me literaly blow me into bits?
I know its probley not the greatest idea but I was just curious. I wouldent be stupid enough to do it :p:
Okay... I may be stretching it a little. Here is what I have actually seen: Compressor electrical terminal missing, little round hole through a block wall, with daylight peeking through. It sure looked like a bullet hole to me. I would not have wanted to be standing right there when it happened.
Can it actually explode? I have heard stories, but none that I could verify from personal experience. All of the cascade systems I have worked on had safety devices.
Well if you have every safety method in a cascade then it ain't gonna expload unless you do something really stupid.
I'd end up doing just that :stick:Quote:
Originally posted by kommando
Well if you have every safety method in a cascade then it ain't gonna expload unless you do something really stupid.
If you include enough internal volume in your cascade so that you keep the static charge at 250 lbs or less and have a highside mecanical relief device you will never have a problem. If it does not have enough gas add internal volume as you add gas. If the volume is added on th esuctionside the gas when off will fill the expansion tank and will be used when the system is running..
How about an update on how all these water chillers are working???
:D
Like...
What temps are you getting?
How often and how long are you running the chiller?
Has there been any unseen snags that have held you up?
How quiet are they and are there any methods of decreasing the noise?
What kind of mixtures for fluids are working the best?
And all the other questions answered that will help me write this book!!!! :banana: :banana: :banana:
What temps are you getting? -19C liquid -8C CPU idle at stock
How often and how long are you running the chiller? ran it all day before my mobo died
Has there been any unseen snags that have held you up? mobo died and 2 blocks leaked because of loose barbs before I got running :\
How quiet are they and are there any methods of decreasing the noise? there loud and I dont know how to quiet them
What kind of mixtures for fluids are working the best? I used windshield wiper fluid for mine but when I get my own built I'll use a 50/50 water/meth mixture.
Too bad about the Board :(Quote:
Originally posted by afireinside
What temps are you getting? -19C liquid -8C CPU idle at stock
How often and how long are you running the chiller? ran it all day before my mobo died
Has there been any unseen snags that have held you up? mobo died and 2 blocks leaked because of loose barbs before I got running :\
How quiet are they and are there any methods of decreasing the noise? there loud and I dont know how to quiet them
What kind of mixtures for fluids are working the best? I used windshield wiper fluid for mine but when I get my own built I'll use a 50/50 water/meth mixture.
Was their a reason behind the barbs leaking??? Just curious, if I should be concerned. One block is the danger den for the gpu with brass and the other is D'tek with plastic barbs for the cpu (this one I'm concerned about running chilled water).
Get metal barbs for it.
Well I guess they didnt come all to tight and putting the tubes and insulation loosened them... I put alot of tethlon tape on them and tightened them with a pair of pliers :D
Those are quite nice temps indeed, shame it busted before you got to see how hot it would go under load.Quote:
Originally posted by afireinside
What temps are you getting? -19C liquid -8C CPU idle at stock
How often and how long are you running the chiller? ran it all day before my mobo died
Has there been any unseen snags that have held you up? mobo died and 2 blocks leaked because of loose barbs before I got running :\
How quiet are they and are there any methods of decreasing the noise? there loud and I dont know how to quiet them
What kind of mixtures for fluids are working the best? I used windshield wiper fluid for mine but when I get my own built I'll use a 50/50 water/meth mixture.
I've got some car antifreeze here that goes down to -60C but it seems far too viscous to use and meanders pityfully along the tubing. Is there a set minimum speed for liquid flow through a block for efficient cooling ? Also, I would imagine this liquid does not abosrb heat as well as normal water so is less efficient.
Could someone tell me the normal operating temperature of a home freezer , is it -18C ? I am thinking of using an entire freezer as the chiller, rather than dismantling an air con unit. I imagine this will be less cold than a chiller, but more convenient spacewise than air con and cooler box
..and easier as well.
Regards
Andy
Household freezers are set to operate at -18ºC, but I dont know if they have the capacity to run a chiller. As they are so well insulated the heat load on them is quite small so they may only be rated for 150-200Watts, I think this may not be enough for your water chiller. I might be wrong, the worst that can happen is your fluid wont be as cold.
That's my thoughts as well, though the trade off is it is a simple first step into refrigeration, I can't imagine anything much simpler.Quote:
Originally posted by Russell_hq
Household freezers are set to operate at -18ºC, but I dont know if they have the capacity to run a chiller. As they are so well insulated the heat load on them is quite small so they may only be rated for 150-200Watts, I think this may not be enough for your water chiller. I might be wrong, the worst that can happen is your fluid wont be as cold.
I will still be able to use it for quick cooling of beer as well of course before the beer moves to my fridge.
Regards
Andy
Meh there ok. Probley gona give it another go today. Than start building my -30C chiller :D
Still waiting for many temps. :DQuote:
Well i have some stuff to do this afternoon and then i am going to get on the ball and provide MANY tempertures for you...lol
Pinching the cap tube, if done right, has a great deal of potential. It is a way of achieving much lower temps without breaking into the system.
Its going to be tricky, requiring patience. We need to walk someone through it.
Lower temps without buying anything? Sign me up :D
My freezer turned up yesterday and is somewhat bigger than Ithought, not sure if it will fit in the shed very well once my other stuff is in there. Anyhow it's a very cheap freezer and so has very cheap parts but it does get cold ! :) It uses R600a which I think is butane, I assume this is one of the cheaper R gases.
It actually works quite well, at 3 out of 5 on the scale i was at -19C and on fast freeze option the compressor runs all the time ( according to the manual ?! ) and it went down to -23.8C.
Now I have to dremel out some tunnels in the lid for the tubes and purchase the interior reservoir container ( something high tech like a plastic bucket.)
With this seemingly low cooling capacity system I'm going to have to take particular care stopping excess environmental warming on my tubes and blocks, even worse, I have gpu and cpu blocks in series...
Regards
Andy
I actually ended up breaking a line when i was moving everything....ive been to angry to post..lol....but i talked to chilly1 and i am gonna turn this into a direct die when i return from florida...so ill be back here in two months..you guys have a good one!Quote:
Originally posted by Gary Lloyd
Still waiting for many temps. :D
Pinching the cap tube, if done right, has a great deal of potential. It is a way of achieving much lower temps without breaking into the system.
Its going to be tricky, requiring patience. We need to walk someone through it.
The new freezer arrives.
http://www.aocb77.dsl.pipex.com/tempFeb2.jpg
I used the polystyrene foam that it was packed in to raise the lid so I could put channels in for the tubing ( see front left, also front right but hard to see. Foam is tapered front to back.
http://www.aocb77.dsl.pipex.com/tempFeb4.jpg
I know I am doing a good job as there is plenty of Duct tape ;)
Located a nice container for the liquid that will be in the freezer
http://www.aocb77.dsl.pipex.com/tempFeb3.jpg
It's a close fit as you can see below
http://www.aocb77.dsl.pipex.com/tempFeb5.jpg
My easy peasy "Dummies Chiller " is coming on well, the only downside is no room for beer cooling at present :( however I do have a back up fridge.
Regards
Andy
Put the beers in the chiller water, then give them a rinse when you take them out :D
1st beerQuote:
Originally posted by Russell_hq
Put the beers in the chiller water, then give them a rinse when you take them out :D
Wash off coolant and drink
2nd beer
wash off coolant and drink
3rd beer
wash off coolant and drink
4th beer
token effort at washing off coolant and drink
5th beer
drink
6th beer
start licking the can before drink
1st coolant
Put straw in coolant and suck the yummy cold blue liquid
2nd coolant
claim a break through for alcoholic science, go blind.
Regards
Thirsty
hey all with chillers
how long you have to run the chiller to get good temps
before you turn the pc.
iv seen lots of people running over night to get -20.
what are some expected temps to get for running a chiller running say 10mins before turning on, (starting off with room temp h20)
That's a much more difficult question than you might think. The fastest would be a chiller with a small reservoir, a big evaporator, a big condensing unit, and a TXV.Quote:
how long you have to run the chiller to get good temps
before you turn the pc.