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Recent content by BrainEater

  1. BrainEater

    Tank design....

    Hi Dan Thanks for the response. Over the last couple months I have completed the required research and am in the process of purchasing materials to build my tank. I am using the original glass tank as an 'outer' tank in a two layer , nitrogen insulated ,tank.Inside this tank I am building a...
  2. BrainEater

    Tank design....

    ok... I have a simple question or two. I've boiled this down to making a tank that's glass and silicone.....silicone will do -55c that good enough for now. So , what would be the ideal glass to use ? I will probably go below -55c lets say -70c. Is pyrex a good choice or is there something...
  3. BrainEater

    Tank design....

    The system will basically be running outside. It's being designed to be a zero pressure system.Any and all venting will be straight to atmosphere.
  4. BrainEater

    Tank design....

    Just a quick question about 'silicone' (aka silicone caulk). I've seen this mentioned earlier , but how cold can this stuff go ? I know the best low temp stuff is rated -55 , but I'm curious if anyone has any experience with this at lower temps ?
  5. BrainEater

    Tank design....

    Ok ! Thanks For the procedure ! That's pretty much how I was gonna do it. Yes , the connector issue is something I'm concerned about.Most of them use 'springyness' , and well , we all know about that and cold. ;S ----- I will also fully agree with your 'phase change of LN2' comment.I am...
  6. BrainEater

    Tank design....

    Awesome ! ...great links. Thanks again ! =D ----------- If I had my way , I'd have a stainless dewar made to my specs , but thats a lot of $$ , so it's out. My next choice would be to fabricate the tank from scratch.I do have half of a machine shop in my garage , so that helps , but I...
  7. BrainEater

    Tank design....

    Decreasing temperature doesnt increase clock speed in itself. You manually increase the clockspeed of the system.You may also need to increase the voltages to certain components.This causes the heat output of said components to increase , requiring greater cooling. The current world record...
  8. BrainEater

    Tank design....

    Hehe I understand forced convection just fine , I (and the whole industry) use it on almost all computers...And If I was after efficiency , (best ability to carry away heat) I'd be using watercooling , not air. Actually , Cray computers have used freon,flourinert,liquid...
  9. BrainEater

    Tank design....

    Thanks for the reply ! Lotta good info there. Actually -50 isnt the goal ; lets say colder than -100 c for the sake of design criteria.Ideally it should tolerate liquid nitrogen , but i'm not convinced the window will allow that. I should probably state that this tank isnt for full time use ...
  10. BrainEater

    Tank design....

    Hello , I'm new here.....I must say a resource like this is a great find. Let me start out by saying , I'm pretty much a cryogenics newb , an 'avid hobbiest' lets say ;) -------- I Have some questions about building a small tank to potentially hold/circulate liquid nitrogen . It'll help...
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