I’m using an equilibar valve (https://www.equilibar.com/back-pressure-regulators/supercritical-back-pressure-regulator/) so I’m able to set the PSI pretty easily, I’ll rock out 900 and see what happens.
I have a heat exchange coming off the pump, its a bent stainless tube style, if I put a fan on it I can get it down below 30c by the time it hits the first chamber (currently product tube). Seems ilke I might be ready to rock 
Is this an efficient cooling method vs a standard chiller?
Good call on using the waste heat, I actually have an evaporator system running for the ethanol that I was going to run on a heater so this might be a viable option. I’ve got a few other uses for warming as well. Thx!
What are some standard temperatures this can hit? I guess at least -60 I’m guessing?