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post #241 of 340
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The weather was absolutely perfect today. I've now finished 99% of everything that needs to be done outside. The loop is essentially finalized from a performance perspective. It already seems safe to say the loop temperature won't be affected by my computer unless its doing something 24/7 like folding.

My goals this week are finalizing the indoor plumbing and getting the 1-wire temperature graphing going.



5/8th wall thickness insulation on the return piping. The trench runs downhill so I'm not concerned about moisture collecting inside the insulation.



The money shot. My grossly over-sized radiator, hidden out of sight.



The pvc valves need to be angled towards to the ground pipes for a straight hose connection. This picture doesn't show that well unfortunately. A 45 connector should do it for the left valve. The right one can be cut, rotated, and rejoined with a coupler.



The heat exchanger between my PC loop and the geothermal loop. I bought another one for the 2nd PC, or to test if dumping room heat into radiators can make a measurable difference. The temperature gun isn't cooperative on this shiny metallic surface. An in-line temperature probe on the PC loop would be useful...



After 90 minutes of bleeding:



The ground probe results. For reference, it's 5 feet down at the start of the geothermal trench. It took less than 30 seconds to slide the conduit pipe into the disturbed soil. I didn't end up burying the ($$$) moisture sensor.



I've given up on trying to raise the water temperature with my PC. I'm only managing to throw money away heating the outside ground. The gpu temperatures remained unchanged after 30m with a 950w measured load at the wall.

Clearly the 97% efficient 1500w heat stick is going to be required. Starting Monday I'll do an extended thermal conductivity test of the loop with it. The results can linearly graphed to determine how much heat it takes to raise the temperature in a given period of time. (1 degree Fahrenheit in 1 hour is the standard measurement.)

It could take all week to do the test because the heat load is undersized for 300' of piping. It'll be cheaper to do a longer test at $3.50 in electricity a day than to assemble another heat stick or two and in-line reservoirs for them.
post #242 of 340
WOOOOOOOOOOOOOOOOOOOOOOOOOOT!!1ELEVEN

Quote:
Originally Posted by wumpus View Post
this is impossible

these temps are too epic for any one man.
lol.
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post #243 of 340
the size of ur loop i cant see a problemwith it cooling ur pc and one room threw a car rad with some fans it might actualy bee ur best bet in the summer to have the rad cooling the room makeing ur water almost room temp and the room temp water hiting ur pc that way thier is no chance of ever geting condensation an even after hours and hours of run time in the summer the water comeing out of the rad will still be slightly colder then room temp so u will still get temps on the pc a few c over ambient
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post #244 of 340
Thread Starter 
Quote:
Originally Posted by shurik06_83 View Post
the size of ur loop i cant see a problemwith it cooling ur pc and one room threw a car rad with some fans it might actualy bee ur best bet in the summer to have the rad cooling the room makeing ur water almost room temp and the room temp water hiting ur pc that way thier is no chance of ever geting condensation an even after hours and hours of run time in the summer the water comeing out of the rad will still be slightly colder then room temp so u will still get temps on the pc a few c over ambient
I'll be trying this sooner than later with my radiators. I bought another plated heat exchanger to hook them all up on their own loop for so their power can be controlled by the 1-wire server.

Here are the results of a 6 hour OCCT max psu load test. It was pulling 680w from the wall with the i7 @ 4GHz HT 1.25v and the 5970 @ 5870 clocks (1.162v 850/1200).






There's something like a 1 degree Celsius rise from the start to end. Not heating the ground up was the primary design goal, which is looking good! I'm now almost fully at mercy of the ground temperature.
post #245 of 340
I don't see how that heat exchanger can be any good for your temps but it seems like it's working..
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post #246 of 340
I'm sorry, but I have a question.

A. How much did this cost you, surely phase change would have been cheaper?
B. Why?

Don't get me wrong, this is full of awesomeness, but I just don't know why. Are you a millionaire who doesn't work anymore?
post #247 of 340
Very nicely done thus far!
post #248 of 340
you are jesus himself
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post #249 of 340
Quote:
Originally Posted by o0jayp0o View Post
you are jesus himself
Well, I wasn't going to admit it myself, but thanks.
post #250 of 340
Quote:
Originally Posted by compuman145 View Post
I'm sorry, but I have a question.

A. How much did this cost you, surely phase change would have been cheaper?
B. Why?
Phase is probably more expensive overall when you stretch the energy costs over time, especially considering the quantity of units the system serves. How much 'time stretching' it takes for the initial vs. long term costs to equal out?......I've no clue.
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