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Well, some major changes to report. Although I haven't done much lately, I have learned that Polypropylene will be a superior choice to Ryton. Therefore, I will be acquiring a Polypropylene Volute...

Well, I was figuring that I might have this thing around for a while and if a little munchkin comes into the picture, I don't want any accidents to turn fatal. PPG is a pretty reliable fluid, though....

I sm going to do alot of folding type stuff though, so that will produce some heat. But thats no worry... I am getting 100 degree condensing temps. So we're talking more capacity than the chips can...

No load, just pull down. The stove was for a known heat load and it served its purpose hehe

I used my temperature probe to get a shot of the outlet temp from the chiller. This is the coldest temp I took, and it was right before I had to close up shop for the day. That is about an 7* Delta...

http://youtu.be/rD3KVpk2ckU

Apparently my favorite phrase of the day is ".....to be expected...." LOL. I should make the videos more time neutral. Doesn't make much sense to make a video and then post it 5 hours later as if I...

Got some results to post later :)

I wonder if I overcharged the system. What is the normal amount of frost that should form on the accumulator? Can I assume that with a return gas temp of 0F (even with superheat) that its pretty...

It shouldn't have. Its a 50/50 Glycol mix. But if it got slushy, that would plug the restrictive coil. I am going to test with a wide open system next week, but when its finally running with a...

Alarmingly little. The pump suction appears adequate, and the outlet is pushing pressure out. However its so low that the reservoir appeared to be still. It screams blockage to me. I am going to...

http://www.enzotechnology.com/vga_ib.htm#

This one was recommended by someone a while ago, and I also like it. Looks like it isn't very restrictive same with their CPU blocks. The problem is, do...

This sort of changes the whole dimension of the project. Restriction is proving to be a problem. Water blocks are, by design, are restrictive.

What type of block,then, do we utilize for this to...

Partly, but it wasnt as big of a problem the first time around. So, there was something I did a bit differently. At 20 degrees viscosity should be around 50 cps... at 8F it would be around 65 to 70....

Well, it might be a flow issue. I ran it through a pretty restrictive coil to test. It took longer than usual. Guess you arent so eager to see it work anymore huh :p: hehe

Still working out the...

7F.... That is the lowest value of the day. :)

There are some spots I need to insulate a bit better. However, flow gets a bit low when it gets down that far. I suspect a bit of slush may have...

Will post temps after dessert. Its taking a while to pull down, but that was because of some issues that I had. A bit of adjustment and it looks good.

The only problem is the pressure at start-up....

http://youtu.be/SDXAt56Qbq4

http://youtu.be/VfpF3W4EATk

In continuing my investigation, I have made an additional discovery. Upon taking apart the pump once more when I changed the impeller I neglected to remove the rubber seal that was in there. Somehow...

Impeller changed. Bushing busted. New seal as well.

http://imageshack.us/a/img842/7224/vaim.jpg

Well, I could.... but the next phase is actually building the enclosure, then getting the parts. So that's a bit off... :p

One thing at a time :)

New Impeller is in hand. Lets see if we can't get down to temp this weekend!

Friday : Replace Impeller and run system checks and build heat exchange coil (minor job).
Saturday : Take system to...

So what do y'all experienced folk think? Should I worry about that high discharge pressure? Or is that just due to the heat of compression due to higher superheat? (Which I can adjust).

I gotta...

It appears that i have somewhere between 3.5 - 4.5 lbs of charge. <--- It could be less, but I just didn't take a beginning cylinder weight. :( The URI website says the shipping weight is 32 pounds,...