Just jumping into the discussion after going thru this whole thread.
Thought I would share my experience.
Regarding coil in collection pot bath:
I am running a Transforminator setup, switching out 4" x 36" columns. 12" collection spool.
Learned on my own to use a 3/8" x 25' coil after a pair of TR21 pumps. I have a temp controller running a 1000W pail heater ( GFCI protected) to maintain heat. The heater rarely comes on after initial heat up. Controller set for 24C. Temp fluctuates between 23.5C and 25.6C. I use a small submersible fountain pump for circulation.
Pump pressure to coil averages 110PSI during 4 column run. Ambient temp ~50 - 70F.
NW Oregon humidity. After coil temps are solid 24C. TR21's head temps around 150F.
All 3/8 plumbing until 1st 50# Manchester. 1/4" SS/Teflon-lined lines from 1st Manchester to 1/4" x 25' coil in H2O ice bath where my 2nd 100# Manchester resides. I have 3/8" ball valves before and after each coil to safely shut down and/or isolate system.
I have not, as yet messed with pre-chilling injection butane. I start with -20F pre-chilled columns. The surface temp of columns stay below 20F throughout process except for brief periods while injecting.
I was happy to follow all ideas within this thread as my own experimentation appears to fall in line with the finding of others.
I played with a salvaged freezer compressor/condenser/etc. but nuked it due to bad capillary line. I had the hope that i could use it to chill my 100# Manchester tank. Probably will obtain chest freezer and PG for H2O/ice bath retrofit.
Anyhoo....Any comments or critique are welcome. Thanks!
Thought I would share my experience.
Regarding coil in collection pot bath:
I am running a Transforminator setup, switching out 4" x 36" columns. 12" collection spool.
Learned on my own to use a 3/8" x 25' coil after a pair of TR21 pumps. I have a temp controller running a 1000W pail heater ( GFCI protected) to maintain heat. The heater rarely comes on after initial heat up. Controller set for 24C. Temp fluctuates between 23.5C and 25.6C. I use a small submersible fountain pump for circulation.
Pump pressure to coil averages 110PSI during 4 column run. Ambient temp ~50 - 70F.
NW Oregon humidity. After coil temps are solid 24C. TR21's head temps around 150F.
All 3/8 plumbing until 1st 50# Manchester. 1/4" SS/Teflon-lined lines from 1st Manchester to 1/4" x 25' coil in H2O ice bath where my 2nd 100# Manchester resides. I have 3/8" ball valves before and after each coil to safely shut down and/or isolate system.
I have not, as yet messed with pre-chilling injection butane. I start with -20F pre-chilled columns. The surface temp of columns stay below 20F throughout process except for brief periods while injecting.
I was happy to follow all ideas within this thread as my own experimentation appears to fall in line with the finding of others.
I played with a salvaged freezer compressor/condenser/etc. but nuked it due to bad capillary line. I had the hope that i could use it to chill my 100# Manchester tank. Probably will obtain chest freezer and PG for H2O/ice bath retrofit.
Anyhoo....Any comments or critique are welcome. Thanks!