itod
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^ Will code for Bitcoins
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July 04, 2013, 07:48:40 AM |
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There's been some transformer oil leakage in my country from smaller, local, transformers and has been reported in the press as environmental danger, also mentioning cancerous effects, etc. Were these reports FUD or is there really some medical issues from being in contact with it? I plan to keep miner in my home and don't want any medical risk to my family (if there is one at all).
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m5
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July 04, 2013, 08:40:28 AM |
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I have had a mineral oil setup for my FPGAs for over a year. Total wattage is ~65 and the temperature was OK @37-42c ish depending on ambient . Heat syncs are mandatory and so is forced convection (one fan to keep the oil moving) otherwise the hot oil seems to stay around the heat source and does not flow away like you would think because the oil is thick. I planned on reusing the setup for a BFL single but that won't be happening since they came nowhere close to their power goals. I may try building a new one just because I enjoyed building it. For the much higher wattage it would need a complete redesign and much more oil and more metal/glass/acrylic to transfer heat from the oil to outside the case. Unless you are doing it for fun it is not really worth the expenditure. Water blocks is probably the better route... but look nowhere as cool (or as silent).
These guys http://www.pugetsystems.com/mineral-oil-pc.php have been running entire PC for few years in a miral oil and their findings are that the oil can easily transfer the heat from CPU even without any pumps. Although the CPU was quite hot (88 degress C), it was running stable which means the heat transfer from it was fast enough (it won't work reliably at 88deg in air). They also noted that bubble of air help to transfer the heat. But don't forget that oil can only help you to move the heat away from the chips (so you can do more overclocking), but it still heats the room where it is located, so it won't you save anything on A/C for example. |
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Bicknellski (OP)
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July 04, 2013, 08:41:02 AM |
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There's been some transformer oil leakage in my country from smaller, local, transformers and has been reported in the press as environmental danger, also mentioning cancerous effects, etc. Were these reports FUD or is there really some medical issues from being in contact with it? I plan to keep miner in my home and don't want any medical risk to my family (if there is one at all).
No PCBs in the oil we are talking. I personally won't be using anything like that. If any doubt I will go with mineral oil (baby oil) non-toxic. We are also designing the heat exchanger so it will go outside so no worries about that room filling with heat. Like a split air conditioning unit. |
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BenTuras
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July 04, 2013, 09:26:53 AM |
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I just have a brilliant idea... How about an old washing machine, top loader ?  |
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Bicknellski (OP)
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July 04, 2013, 10:16:07 AM |
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FOOKING AWESOME IDEA there BEN.  Capacity? 40 - 60 litres |
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BenTuras
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July 04, 2013, 11:20:17 AM |
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FOOKING AWESOME IDEA there BEN. Capacity? 40 - 60 litres LOL. Yeah, ideas start brilliant, then you really think and question - how to get the old washing powder residu out of the system
- will the hoses cope with the mineral oil
- input of the pump is on the bottom where the 'cold' oil is
On the other hand, - it should be water tight
- there is a pump to circulate the oil
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qiuness
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July 04, 2013, 11:32:01 AM |
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i`m also watching this for my GPU Farm.. although it sounds very expensive for multiple PC rigs
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Bicknellski (OP)
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July 04, 2013, 11:56:13 AM
Last edit: July 04, 2013, 12:23:47 PM by Bicknellski |
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I was thinking something like this but as a fiberglass unit.  Recycling all the rage... what about an old freezer? http://webpages.charter.net/redusc/Freezer.html Don't drill through the walls for piping.  |
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BenTuras
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July 04, 2013, 12:07:38 PM |
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Do you own a refinery ?! That will use a lot of mineral oil, darn! LOL, -18 degrees C mineral oil, better get one that isn't frozen at that temp! (In reality, the Avalon chips will heat the oil more than the freezer can cool it) |
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Bitcoinorama
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July 04, 2013, 12:09:31 PM |
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Someone on another thread added a link to an awesome fish tank project with a pc, ideal size, it worked, and they now make a kit all components included for you for around US $500...
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Make my day! Say thanks if you found me helpful  BTC Address ---> 1487ThaKjezGA6SiE8fvGcxbgJJu6XWtZp |
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BenTuras
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July 04, 2013, 12:14:08 PM |
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Someone on another thread added a link to an awesome fish tank project with a pc, ideal size, it worked, and they now make a kit all components included for you for around US $500...
Do you mean this firm: http://www.pugetsystems.com/ ? |
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Bicknellski (OP)
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July 04, 2013, 12:18:57 PM |
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No you unplug the freezer use it as the holding tank... see the retrofit for taps in the link... Fish tanks? Wow... bit too small for a farm. Just get $100 water block from the other cooling thread if you are doing something that small. Ideal would be these sorts of fiberglass planters I think.  |
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turtle83
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July 04, 2013, 02:02:59 PM |
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How about using metal tank instead of plastic/fiber glass?
I would think thermal conductivity would help in such setup...
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Bicknellski (OP)
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July 04, 2013, 03:45:10 PM
Last edit: July 04, 2013, 06:58:37 PM by Bicknellski |
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How about using metal tank instead of plastic/fiber glass?
I would think thermal conductivity would help in such setup...
Interactivity of metal with oil? Not sure about metal containers. Cost as well might be prohibitive. Heat can get through fiberglass walled tanks... hot tubs are sprayed with insulating foam to save heating costs. So heat will be lost through the tank walls. Found a perfect tank in baby blue going to check pricing next week.  |
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18RATTT
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July 04, 2013, 05:30:22 PM |
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aha! yes baby blue tank... keep on talking boys.. we are getting there, ive been watching since page #1
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Bicknellski (OP)
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July 10, 2013, 07:26:09 AM
Last edit: July 11, 2013, 04:59:39 AM by Bicknellski |
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Going to source the following Friday: OIL (Mineral Oil) HEAT EXCHANGERS (Plate and Finned Rads) http://www.metalindoengineering.com/pdf/Air%20Cooled%20HE/Plate%20Fin%20Coil.pdfI will try and document the shopping trip as well as the build process over the next few weeks. Try to get some pictures up on Friday. Note me and another member of the Big Picture Mining Cooperative are going to build an Oil Cooling Tank for his older GPUs he has been litecoin mining with and I will be testing my 3 - X6500 FPGA in the same tank as an analog for future miners like Klondikes 16s or Klondike K64 Blades or Bitfury boards. The X6500s run hot in my living room so it should be interesting to see the what happens. |
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Bicknellski (OP)
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July 11, 2013, 09:08:43 AM |
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Ya not any easier here in Indonesia Ben... I am interested what PRICE will be coming at me. Pipes... I am thinking: PEX. PEX (cross-linked polyethylene) has several advantages over copper: PEX is cheaper than copper. Half-inch PEX tubing costs about a third the price of copper. Some of the savings will be offset by the need for a special tool to install the fittings, but if you’re doing a medium to large plumbing job, you’ll usually save by using PEX instead of copper. PEX is faster to install than copper. If you use a manifold and “home-run” system (shown below), it’s like running a garden hose to each fixture—super fast and easy. But even if you install PEX in a conventional main line and branch system, the connections are quicker to make than soldering copper. PEX won’t corrode like copper. If you live in an area with acidic water, copper can corrode over time. PEX is unaffected by acidic water and is therefore a better choice in these areas. What about PEX vs. CPVC? PEX and CPVC cost about the same. But there are a few reasons why PEX may be a better choice. First, PEX doesn’t require glue, which means you don’t have to work in well-ventilated spaces or wear a respirator. PEX is less likely than CPVC to burst if it freezes. Also, since PEX is more flexible and is available in long lengths, it can work better for “fishing” through walls in remodeling situations. http://www.familyhandyman.com/plumbing/plumbing-with-pex-tubing/step-by-stepDifferent types of pex pipe; the cost, the tools required and applications of and advantages. http://www.youtube.com/watch?feature=endscreen&v=G7Ya8Nv5g-M&NR=1 |
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