Just Chillin Cascade

[{.bLanK} GoD]

good idea {.bLanK} GoD for the fine tuning idea.
Its also good to see ppl using HPCO on both stages
Will you use a thermostat in this cascade to control second stage?
Question, why have you insulated the Expansion tank?.
Your meant to have a long length of capillary line to the expansion tank and braze it in to the 2nd stage suction line near the compressor

I hope they refunded you your money after making you sit the wrong test to get ethylene

I will use some sort of control to look after the second stage, at the very least I have the old G-froster X here I could use, wont give me an evap readout tho.
I'm thinking of either getting a K-type G-froster or a Carel controller, i'm leaning towards the Carel controller, twice the price tho.

I have insulated the expansion tank as it seconds as an accumulator. An accumulator I realize isn't needed as if any liquid ethylene getting past the evap is going to vaporize well before it gets in the compressor. But I figure by increasing the low side volume I should be able to get a lower low side pressure.

Luckily that course was %100 funded by the government. I wonder if I'm that lucky with the right course this time?

EDIT:I just realized,

Your meant to have a long length of capillary line to the expansion tank and braze it in to the 2nd stage suction line near the compressor

If it's on the low side like that it's still low side volume so would achieve the same thing, except it wouldn't have to be insulated right?
Thinking about it now, the only thing I can think of that would hinder my performance the way it is, is that expansion tank absorbing more heat through the insulation, the insulation is about 25mm thick though.