sounds good michael
I'm currently playing a little with my autocascade and I can't use the hcfc's since I'm in europe.
goal:
~-70 -75*C @250w load
gases I have in stock:
r134a, r23, r290, r404a, r410, r507, r600, r600a, argon, co2
gases I aim to use:
r600, r290 and r23,
parts:
14k btu rotary, 2kw condenser
one phase sep (10" height and 1"3/4 diameter, filled with steel wool),
hxes:
12plate hx as cascade hx
and for slhx/aux condenser I have 13ft 1/4" in ½" as slhx/aux condenser due to the lack of 3/16" in stock (purged during brazing ofcourse).
what do you think about that configuration?
what I havn't figured out is captubes I have 0,026", 0,028", 0,031" and 0,042" avaiable at the moment but other diameters is no problems to get.
I was thinking of something like 10ft of 0,042" for first stage (r600/r290 liquid) and about 15ft on cold head. i talked to adam and he mentioned 7ft first and 12ft second, but I've tried this 0,042" and it's really hard to keep discharge up with a decent suction pressure on SS with 0,042" captube and 18cc compressor.. kinda worried if the rotary will be, or not be able to keep it down.
what do you think about this? I have ball valves which I intend to install captube between for easy access to change captubes... a temporary use ofcourse.. when finding the final tune a recovery will be done and ballvalves be removed and then charging pack the refrigerant.. a good idea?
regards
Tim
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Originally Posted by tim-
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