The cooling necessary to have a condenser at 25 ° or 16 ° which would be the ideal is too demanding for some equipment I do not have to necessarily work at 34, can work very well at 50 °.
U mean using a different liquid with boiling point 50 °C ?
Topic: Novec 7000 Project [immersive evaporating cooling] - page 5. (Read 26667 times)
U mean using a different liquid with boiling point 50 °C ?
The problem is already discovered, was that the gas pushing the air up an the capacitor is on top of all the gas tank completely emptied the air and the next thing is to escape over the edge of the tank, the solution is down the condenser and let the lid no hermetic so air tight that moves can leave and re-enter if the FPGAs shuts down and gas down.
Just plug and starts to condense and the peltier does his job:
But when the FPGA begins to reach 230Mhz the condenser cooling capacity declines and reaches 30 º where condensation stops and looks like nothing and dries clear, begin to increase the gas level:
The cooling necessary to have a condenser at 25 ° or 16 ° which would be the ideal is too demanding for some equipment I do not have to necessarily work at 34, can work very well at 50 °.
Just plug and starts to condense and the peltier does his job:
But when the FPGA begins to reach 230Mhz the condenser cooling capacity declines and reaches 30 º where condensation stops and looks like nothing and dries clear, begin to increase the gas level:
The cooling necessary to have a condenser at 25 ° or 16 ° which would be the ideal is too demanding for some equipment I do not have to necessarily work at 34, can work very well at 50 °.
A theory that was pressurized to connect all 3 plates was that I had too much air inside the tank, I personally do not share but hey I have been tested:
By connecting the second plate pressure starts to rise, the peltier or heatsink not enough.
We can measure the actual temperature of the FPGA by not having a heatsink above, confirms that the Novec 7000 boils at 34 ° as promised.
Video:
By connecting the second plate pressure starts to rise, the peltier or heatsink not enough.
We can measure the actual temperature of the FPGA by not having a heatsink above, confirms that the Novec 7000 boils at 34 ° as promised.
Video:
Quote
Looks pretty cool... The pressure problem was because of you not able to condense the vapour fast enough?
Yes, it should be a very good design for the condenser, not worth anything like heatsinks are used with air.
Here is the evidence of the liquid, has improved the performance of a single plate 946 to 963 MH/s, putting three plates have begun to have a pressure problem and I had to stop.
And a pretty cool video with the three boards running.
And a pretty cool video with the three boards running.
Quote
Looks pretty cool... The pressure problem was because of you not able to condense the vapour fast enough?
Here is the evidence of the liquid, has improved the performance of a single plate 946 to 963 MH/s, putting three plates have begun to have a pressure problem and I had to stop.
And a pretty cool video with the three boards running.
And a pretty cool video with the three boards running.
Quote
beautiful 
I'd love to see some hashing ASICs submerged into this magical stuff
I'd love to see some hashing ASICs submerged into this magical stuff 
Novec 7000 is just pure nerd porn 
What are you going to submerge? For the ~600Watts of heat of an Avalon the condenser set up looks a little weak. What's the concept?
Is what we are seeing is a peltier with it's hot side liquid cooled? How much power can it take if it's properly cooled? Got a link to a datasheet?
No, the container is not pressure tight. But the first little leakage will cost ya 1k$
What are you going to submerge? For the ~600Watts of heat of an Avalon the condenser set up looks a little weak. What's the concept?
Is what we are seeing is a peltier with it's hot side liquid cooled? How much power can it take if it's properly cooled? Got a link to a datasheet?
what if ambient gets over 34C ? would the whole thing explode due to pressure?
No, the container is not pressure tight. But the first little leakage will cost ya 1k$
what if ambient gets over 34C ? would the whole thing explode due to pressure?
Quite interesting..
Is it just me or does that seam like an awful little heatsink for that big a tank?
How many asic's / fpga's are you planning on putting into the tank?
Are you going to be circulating the fluid via pump / fan?
Is it just me or does that seam like an awful little heatsink for that big a tank?
How many asic's / fpga's are you planning on putting into the tank?
Are you going to be circulating the fluid via pump / fan?
The tank itself is a huge radiator.
If the phase change cooling works as advertised you would need a condenser with similar surface area to the heat sink on the FPGA.
EDIT: Provided that condenser is just going to be air cooled. If I understand correctly OP is trading the expense of the compressor in an air conditioner for this fancy refrigerant. By using a peltier it could be much smaller.
The cooler at the top is just to condense the novec gas back to liquid form. This is a air sealed system. technically, the fan isnt necessary at all.
Quite interesting..
Is it just me or does that seam like an awful little heatsink for that big a tank?
How many asic's / fpga's are you planning on putting into the tank?
Are you going to be circulating the fluid via pump / fan?
Is it just me or does that seam like an awful little heatsink for that big a tank?
How many asic's / fpga's are you planning on putting into the tank?
Are you going to be circulating the fluid via pump / fan?
The tank itself is a huge radiator.
If the phase change cooling works as advertised you would need a condenser with similar surface area to the heat sink on the FPGA.
EDIT: Provided that condenser is just going to be air cooled. If I understand correctly OP is trading the expense of the compressor in an air conditioner for this fancy refrigerant. By using a peltier it could be much smaller.
Quite interesting..
Is it just me or does that seam like an awful little heatsink for that big a tank?
How many asic's / fpga's are you planning on putting into the tank?
Are you going to be circulating the fluid via pump / fan?
Is it just me or does that seam like an awful little heatsink for that big a tank?
How many asic's / fpga's are you planning on putting into the tank?
Are you going to be circulating the fluid via pump / fan?
A running fan in closed area, and where is the hamster? 
Its sounds like a fun experiment. Have you visited these forums? 3m-novec-7000-group They have posted data and some conclusions on using Novec cooling fluids for servers and other electronic devices.
Thanks for the link
The price is 86 € per kilo and has a density of 1.4 kg/m3.
This week I should get the liquid, for now I will track the performance of an FPGA to compare air cooled using liquid after this.
Average 946 MH / s
3M Thermal Management fluids kinematic viscosity charts
I was considering using this to cool Bitfury 400 units and mount them vertical.
http://multimedia.3m.com/mws/mediawebserver?mwsId=tttttvW9lEgUmy7VPZA_qZ0t2XW62EW9iXut2Xut2tttttt--&fn=bro_heattrans.pdf
I was considering using this to cool Bitfury 400 units and mount them vertical.
http://multimedia.3m.com/mws/mediawebserver?mwsId=tttttvW9lEgUmy7VPZA_qZ0t2XW62EW9iXut2Xut2tttttt--&fn=bro_heattrans.pdf
Its sounds like a fun experiment. Have you visited these forums? 3m-novec-7000-group They have posted data and some conclusions on using Novec cooling fluids for servers and other electronic devices.
I am looking into a solution like this to expand my present setup.
Below is a pump and heat exchanger that moves heat outside so it can be dissipated by chillers.
Youtube Video http://www.youtube.com/watch?v=JkuCFA1Vtio
3M Thermal Management fluids kinematic viscosity charts
I was considering using this to cool Bitfury 400 units and mount them vertical.
http://multimedia.3m.com/mws/mediawebserver?mwsId=tttttvW9lEgUmy7VPZA_qZ0t2XW62EW9iXut2Xut2tttttt--&fn=bro_heattrans.pdf
I was considering using this to cool Bitfury 400 units and mount them vertical.
http://multimedia.3m.com/mws/mediawebserver?mwsId=tttttvW9lEgUmy7VPZA_qZ0t2XW62EW9iXut2Xut2tttttt--&fn=bro_heattrans.pdf
Its sounds like a fun experiment. Have you visited these forums? 3m-novec-7000-group They have posted data and some conclusions on using Novec cooling fluids for servers and other electronic devices.
Quote
The end result is the cost and need to keep a sealed hermetic environment does not outweigh the benefits. Ultimately air cooled servers are more efficient and use less space in 1U rackmount configurations without the need for a condenser. Increasingly, for overclockers, it serves less purpose as it is not a good working fluid, and is prone to gelling. So you get water results at many times the price, difficulty, and encumberance.
It's fun and a cool idea. But also, insulation for sub zero methodologies has progressed incredibly in the last five years. Insulation is simple and does not place permanent marks upon motherboards and rarely results in damage with minimal preparation, something far from this configuration.
Sure is the power recoup nice? If you can produce high enough pressures for a regenerator, yes. Is it viable? Not really.
Also the fluid is often used with masks, as the effects of the fluoroether long term on lung tissue is not yet known or tested.
It's fun and a cool idea. But also, insulation for sub zero methodologies has progressed incredibly in the last five years. Insulation is simple and does not place permanent marks upon motherboards and rarely results in damage with minimal preparation, something far from this configuration.
Sure is the power recoup nice? If you can produce high enough pressures for a regenerator, yes. Is it viable? Not really.
Also the fluid is often used with masks, as the effects of the fluoroether long term on lung tissue is not yet known or tested.
3M Thermal Management fluids kinematic viscosity charts
I was considering using this to cool Bitfury 400 units and mount them vertical.
http://multimedia.3m.com/mws/mediawebserver?mwsId=tttttvW9lEgUmy7VPZA_qZ0t2XW62EW9iXut2Xut2tttttt--&fn=bro_heattrans.pdf
I was considering using this to cool Bitfury 400 units and mount them vertical.
http://multimedia.3m.com/mws/mediawebserver?mwsId=tttttvW9lEgUmy7VPZA_qZ0t2XW62EW9iXut2Xut2tttttt--&fn=bro_heattrans.pdf
Gracias
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