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I used the last tiny bit of r401a and then r22 and backed the screw way out on the TXV and it is acceptable now. I think I will get a replacement TXV in the future but for the time being the...

Just took another look and the expansion valve is an Alco HF 1/2 FC.

Looks like a 1/2 ton expansion valve and there is a place to adjust it on the bottom. Which way should I turn it and how...

Alright so evidently I don't have any R401a... My boss told me about the 30 lb cylinder but it's empty. =(

Charged with R22 again and I watched as it seemed to be working at first, but then the...

Just out of curiosity... How would I have problems with not enough refrigerant in the evap when the suction line is showing such a high pressure? I guess this should be pretty simple but it's just...

The old compressor was from the 70s (I guess it was older than the 20 years I originally stated), and there is no information I was able to find on it as the nameplate and such was corroded off from...

I usually do phase change but I think I'm going to go with air cooling so I don't have to worry constantly about condensation and crap.

I am looking to buy the best HS I can with a 50 dollar...

As I charged I slowly watched liquid show up in the glass and then eventually instead of liquid slowly spewing through it was mostly liquid and a few bubbles and then all liquid no bubbles.
...

Since this is 230v I'm assuming it's a larger air conditioner. I'd also assume that being a larger air conditioner it's not R134a and since a very large portion of air conditioners are either R134a...

Only had one spare access valve when I first tried charging it, so I don't know high side pressure but since then I've added one. When I charged it the liquid line was fully liquid (no bubbles in...

Hey guys, I'm helping my boss out with a problem with his waitress station/display case cooler (it cools lemonade, milk, iced tea, etc. and has glass sliding doors on it) but have run into some...

Holy thread resurrection Batman!

I've got everything for my autocascade except 20' of 1/2" tubing for the heat exchangers.

I had a poor one a while back but have since upgraded the compressor, just haven't had...

You wouldn't be happy w/ -40 for long (I bet). Idle temps between brass/copper would probably be pretty close but I bet there'd be quite a bit higher load temps.

Did you even read my post? First of all, the condenser and compressor from the a/c unit would make a louder but otherwise fine single stage. Again, IT WOULD WORK FINE for a processor and more than...

I'd wager that the compressor you found is 1/2 h.p. or right around there. Calculations between btu/hp and such online aren't exactly accurate but more of a guideline.

The compressor you have...

Gotcha. I forgot about the controller.

VapoLS - Compressor - Condenser = Evaporator + Case :D

Add an accumulator, a desuperheater and a new tune that's a pretty expensive evaporator and case compared to a fresh (custom) build isn't it?

That should work, but why not just drop in a silent fan for the second one?

I just placed an order myself. Been waiting a couple of days for it. =)

BINGO!

Evaporated refrigerant is still very, very cold and will cause frost.

I love charts! Give me more!

I couldn't agree more. Obviously this isn't a forum specifically for general phase change stuff but knowledge is knowledge -- it certainly doesn't hurt.

Anyways, I've noticed the same thing as...

Wouldn't the stainless steel braiding just capture more moisture/air under the insulation? What exactly is the benefit of having that costly stuff over regular suction line?

This is what I use... Excellent condenser even though they're steel btw -...

I didn't see R290 on there but here's a link to a website with P/T on it: http://www.glacierbay.com/ptchartpropane.asp

Good find though, just downloaded.