Switched off the miners because of power/bitcoin price... if somebody wants it, just shoot me a pm.
One might even be able to use the cooling blocks for other miners....
Topic: Avalon Water Cooling (Read 13898 times)
And about cooling fluid chemistry :
Most prominent vendors of cooling liquids based on "water" use this :
Demineralised water H20 + isopropyl alchocol (50-50% usually) + you can use some biological agent suppresive, like kalium - hypermangan (permanganate) which wil erradicate algae since as I see your watter gallon bottles are exposed to the sun, and sooner or later biological agents such as algae will start to form.
Another possibly fluid for this could be Lithium-bromide, but not in plastic bottle and is also needs severe pressure protection.
Serious issue is also the electrochemical corrosion but I have too little information to help you with it.
However being put on alcohol evaporative temperature area, such bottles are not a proper storage for cooling liquid since alchocol will start to evaporate on room temperature, and there are liquid pressure issues when they change phase state, from liquid to evaporative.
Most prominent vendors of cooling liquids based on "water" use this :
Demineralised water H20 + isopropyl alchocol (50-50% usually) + you can use some biological agent suppresive, like kalium - hypermangan (permanganate) which wil erradicate algae since as I see your watter gallon bottles are exposed to the sun, and sooner or later biological agents such as algae will start to form.
Another possibly fluid for this could be Lithium-bromide, but not in plastic bottle and is also needs severe pressure protection.
Serious issue is also the electrochemical corrosion but I have too little information to help you with it.
However being put on alcohol evaporative temperature area, such bottles are not a proper storage for cooling liquid since alchocol will start to evaporate on room temperature, and there are liquid pressure issues when they change phase state, from liquid to evaporative.
This is pretty far away from reality. The vast majority of PC watercooling is done with dionised water + small amounts of additives.
wrestling with hoses and leakages 
Build your rig into a office size fride.
Build your rig into a office size fride.
And about cooling fluid chemistry :
Most prominent vendors of cooling liquids based on "water" use this :
Demineralised water H20 + isopropyl alchocol (50-50% usually) + you can use some biological agent suppresive, like kalium - hypermangan (permanganate) which wil erradicate algae since as I see your watter gallon bottles are exposed to the sun, and sooner or later biological agents such as algae will start to form.
Another possibly fluid for this could be Lithium-bromide, but not in plastic bottle and is also needs severe pressure protection.
Serious issue is also the electrochemical corrosion but I have too little information to help you with it.
However being put on alcohol evaporative temperature area, such bottles are not a proper storage for cooling liquid since alchocol will start to evaporate on room temperature, and there are liquid pressure issues when they change phase state, from liquid to evaporative.
Most prominent vendors of cooling liquids based on "water" use this :
Demineralised water H20 + isopropyl alchocol (50-50% usually) + you can use some biological agent suppresive, like kalium - hypermangan (permanganate) which wil erradicate algae since as I see your watter gallon bottles are exposed to the sun, and sooner or later biological agents such as algae will start to form.
Another possibly fluid for this could be Lithium-bromide, but not in plastic bottle and is also needs severe pressure protection.
Serious issue is also the electrochemical corrosion but I have too little information to help you with it.
However being put on alcohol evaporative temperature area, such bottles are not a proper storage for cooling liquid since alchocol will start to evaporate on room temperature, and there are liquid pressure issues when they change phase state, from liquid to evaporative.
This is the water cooled miner running at 325MHz now - can somebody point me on where to see if a still have potential to go higher?
What are the "rejected", what the "discarded" shares? Where do I see the hardware error rate?
That's the air cooled miner next to it:
Here are the pool stats - I don't really understand why the water cooled miner is not faster by the number the frquency is higher (~15%)
What are the "rejected", what the "discarded" shares? Where do I see the hardware error rate?
That's the air cooled miner next to it:
Here are the pool stats - I don't really understand why the water cooled miner is not faster by the number the frquency is higher (~15%)
This might have something to do with the way your miner/controller talks to the boards and how it handles jobs given to chips and cooling is needed but is not that important as firmware and controller kernel design. It's brain and not muscle game.
However nice effort with aluminum blocks milling, but they suffer from same problems solar thermal panels have. Expensive, heavy and not that efficient. This technology is now obsolete with roll-bond technology available. We talk top-solutions, not mainstream which is still low efficiently-dominated on the market.
Yes. I also invite you to have a look at the manufacturing drawing I published 
the reason for asking is because though yr diagram states g1/4
the pictures are too small, i can't see if there are screw threads or not.
just trying to clarify that's all
please feel free to download the pdf by clicking!
Yes. I also invite you to have a look at the manufacturing drawing I published
the reason for asking is because though yr diagram states g1/4
the pictures are too small, i can't see if there are screw threads or not.
just trying to clarify that's all
Yes. I also invite you to have a look at the manufacturing drawing I published
are u making this for manufacturing?
If you tell me a desired volume I can get you quote. For delivery cost I would need a location. Do you need the water blocks only or the whole system?
are those g 1/4" threads on the fittings?
are u making this for manufacturing?
If you tell me a desired volume I can get you quote. For delivery cost I would need a location. Do you need the water blocks only or the whole system?
are u making this for manufacturing?
I did mine with a vendor of my company. They were not too inclined to do it for a low price because of the low quantity.
where are u located?
if i were to design or roughly sketch one, are u able to manufacture it?
I could certainly get you a quote. Shanghai.
What would the volume be?
That would depend on how many avalon owners are interested.
I did mine with a vendor of my company. They were not too inclined to do it for a low price because of the low quantity.
where are u located?
if i were to design or roughly sketch one, are u able to manufacture it?
I could certainly get you a quote. Shanghai.
What would the volume be?
I did mine with a vendor of my company. They were not too inclined to do it for a low price because of the low quantity.
where are u located?
if i were to design or roughly sketch one, are u able to manufacture it?
I did mine with a vendor of my company. They were not too inclined to do it for a low price because of the low quantity.
el_rlee
have u considered using fins inside the cooling loop and reducing the amount of g 1/4 openings?
have u considered using fins inside the cooling loop and reducing the amount of g 1/4 openings?
Yes. To be honest I wanted to do a serpentine like channel first, with a cover and a sealing but I couldn't manage the manufacturing drawing. A work colleague helped with this one and he did it in like one hour or so...
Also the fittings cost a dime a dozen and you almost have certainty that nothing will be leaking.
do u have access to manufacturing of the waterblocks? or do u just design them then pass to some factory to mill it out?
i;m thinking of design some simple waterblocks after my exams end.
el_rlee
have u considered using fins inside the cooling loop and reducing the amount of g 1/4 openings?
have u considered using fins inside the cooling loop and reducing the amount of g 1/4 openings?
Yes. To be honest I wanted to do a serpentine like channel first, with a cover and a sealing but I couldn't manage the manufacturing drawing. A work colleague helped with this one and he did it in like one hour or so...
Also the fittings cost a dime a dozen and you almost have certainty that nothing will be leaking.
el_rlee
have u considered using fins inside the cooling loop and reducing the amount of g 1/4 openings?
have u considered using fins inside the cooling loop and reducing the amount of g 1/4 openings?
Looks great! 
What's your hashrate and clock speed? I'm very interested in those numbers to compare them to my own:
I have tried to cool down my Avalon with an A/C like in this thread: https://bitcointalksearch.org/topic/avalon-stable-98986mhashsec-242423
Temps look fine: 15-19°C in the casing, 33-40°C at the blocks (Chip temp was below 50° all the time).
But the hashrates are exactly the same as without the A/C, at 29° in the case and 45° at the blocks. Even at 50° block temp I have the same maximum hashing speed of ~82-83 GH/s @ 355 MHz. If I cramp up the clock, hardware errors increase so much that the hash rate drops down.
The only difference I noticed when using the A/C is that I could run speeds like 400 MHz (with ~50% HW errors and hashrates <70 GH/s). Without the A/C, the highest clock speed is 385 MHz (also with high HW errors and lower hashing speed).
Has anyone noticed the same increase in HW error rate when cramping up the clock speed above 350-360? This seems to be a barrier, regardless of the cooling. I was thinking of a water or oil cooling myself, but now, the only reason to do this would be to reduce the noise.
What's your hashrate and clock speed? I'm very interested in those numbers to compare them to my own:
I have tried to cool down my Avalon with an A/C like in this thread: https://bitcointalksearch.org/topic/avalon-stable-98986mhashsec-242423
Temps look fine: 15-19°C in the casing, 33-40°C at the blocks (Chip temp was below 50° all the time).
But the hashrates are exactly the same as without the A/C, at 29° in the case and 45° at the blocks. Even at 50° block temp I have the same maximum hashing speed of ~82-83 GH/s @ 355 MHz. If I cramp up the clock, hardware errors increase so much that the hash rate drops down.
The only difference I noticed when using the A/C is that I could run speeds like 400 MHz (with ~50% HW errors and hashrates <70 GH/s). Without the A/C, the highest clock speed is 385 MHz (also with high HW errors and lower hashing speed).
Has anyone noticed the same increase in HW error rate when cramping up the clock speed above 350-360? This seems to be a barrier, regardless of the cooling. I was thinking of a water or oil cooling myself, but now, the only reason to do this would be to reduce the noise.
I've posted this before, together with temperatures - read back on this thread.
Took me from 21st of May until now, almost 8 weeks later!
Is the plumbing to each block in serial or parallel?
3 piece (one Avalon) serial, the individual Avalon's parallel. Gotta say that all parallel would suit the pump better probably, also a bigger diameter hose would be nice. But as said before it wouldn't improve the hashrate any more so I didn't bother to change it.
Please note that the two hoses to the water bottle are short circuited near the pump, so normally there is nothing running up and down.
Looks great!
What's your hashrate and clock speed? I'm very interested in those numbers to compare them to my own:
I have tried to cool down my Avalon with an A/C like in this thread: https://bitcointalksearch.org/topic/avalon-stable-98986mhashsec-242423
Temps look fine: 15-19°C in the casing, 33-40°C at the blocks (Chip temp was below 50° all the time).
But the hashrates are exactly the same as without the A/C, at 29° in the case and 45° at the blocks. Even at 50° block temp I have the same maximum hashing speed of ~82-83 GH/s @ 355 MHz. If I cramp up the clock, hardware errors increase so much that the hash rate drops down.
The only difference I noticed when using the A/C is that I could run speeds like 400 MHz (with ~50% HW errors and hashrates <70 GH/s). Without the A/C, the highest clock speed is 385 MHz (also with high HW errors and lower hashing speed).
Has anyone noticed the same increase in HW error rate when cramping up the clock speed above 350-360? This seems to be a barrier, regardless of the cooling. I was thinking of a water or oil cooling myself, but now, the only reason to do this would be to reduce the noise.
What's your hashrate and clock speed? I'm very interested in those numbers to compare them to my own:
I have tried to cool down my Avalon with an A/C like in this thread: https://bitcointalksearch.org/topic/avalon-stable-98986mhashsec-242423
Temps look fine: 15-19°C in the casing, 33-40°C at the blocks (Chip temp was below 50° all the time).
But the hashrates are exactly the same as without the A/C, at 29° in the case and 45° at the blocks. Even at 50° block temp I have the same maximum hashing speed of ~82-83 GH/s @ 355 MHz. If I cramp up the clock, hardware errors increase so much that the hash rate drops down.
The only difference I noticed when using the A/C is that I could run speeds like 400 MHz (with ~50% HW errors and hashrates <70 GH/s). Without the A/C, the highest clock speed is 385 MHz (also with high HW errors and lower hashing speed).
Has anyone noticed the same increase in HW error rate when cramping up the clock speed above 350-360? This seems to be a barrier, regardless of the cooling. I was thinking of a water or oil cooling myself, but now, the only reason to do this would be to reduce the noise.
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