I’d argue you did: search query was quite literally “Chiller + Math”.
I also wasn’t pointing you in the right direction to be a cunt. you’re welcome to interpret it that way if you prefer.
this is really the key here… two phase changes…one in each direction.
you could also wander out of this wee pond and ask the all knowing one about the thermodynamics of phase change - Google Search
for “chiller math”
Too bad this thread petered out!
How many are rocking a FF setup?
love this clip
Is there a difference in evap calcs between a tube in shell and a tube in tube?
The surface/transfer area of a 6" or 8" x 36" spool(w/ heated jacket) is greater than the op’s bvv 19-3/8" tube’n shell, so the transfer rate should also be greater? If using a 180° hollow cone nozzle to evenly coat the sidewalls thats seems potentially better than trying to evenly fill a tube sheet on a shotgun style.
Also a plate exchanger could be interesting and provide a bit more surface area than both tube n shell or tube n tube. There’s some other cool ideas that I think could work paired with a possible cross flow heater similar to what boomtown was doing.
pressurized pre heating/condensing only. you’ll be sad if you’re boiling in a plate exchanger.
yeah i was curious about pre chilling as well. but one concern i have with pre chilling for injection is that it may clog up due to moisture if there is any present… or even clogs condensing on the recovery side…
ive heard some people have troubles boiling with hydrocarbons on tube n shell… cant imagine what kind of nightmare that would be in a plate exchanger.
Was looking at Chemteks spray head lid;https://www.instagram.com/p/CSIXBiCpiq0/?utm_source=ig_web_copy_link
Anyone have any experience with it? Doesn’t seem to be for sale anymore or atm.
Kinda dont like the recovery through the same lid idea, but it seems designed as a non shell and tube falling film, kinda conversion kit thing, which is a method im still contemplating and cost comparing.
I think Im going to use a full “surge tank” to collect before evaporation so as to get the solvent off the material and will use it to preheat before “injection”. Might split my days work into two parts 1.blasting tubes into surge tanks, then 2. running them through the evaporator.
Been eyeing up the BETE CW series nozzle, Im shooting for 1 to 2 Lbs / min type speeds so kinda have to decide between the CW25 or the CW50. They are $100usd from my local supplier, but with a 6week lead time.
Question about common setups, using the ETS falling film unit as the example. Is the tube above and attached to collection pot/chamber also a shell and tube and is it used heated to evaporate and catch any remaining entrainment?
Ill be using dry ice to condense, so was thinking about the shotgun style condenser, have only seen them available or in stock at BVV.
Ive seen some of the kerfuffle about the design, @FicklePickle where do you recommend one to procure such a designed unit? Do you care or am I copy and pasting some designs to china fabs?
Who’s running smaller units, 3-5lb material, 20 - 30lb solvent, with falling film methods!? Share some thoughts please!
You’re going to hate how much dry ice you eat up. If you’re going to use dry ice at all I’d recommend using multiple stage cooling via multiple tube and shell condensers in sequence and having one tube and shell hooked up to something to bring temp down to around 0c and then the dry ice essentially cools the rest of the way down to below 0 temps. You gotta remember, a lot of energy is used just for the phase change (turning from gas to liquid) so expecting your dry ice to do a phase change and also cool it down significantly is going to be a burden on your dry ice budget. Ultimately I think tube and shells are better off paired with badass chillers.
That being said, this process is extremely dangerous and without knowing how to calculate kw of heating vs cooling needed, surface area efficiencies in your heat exchangers, you’re going to be risking a very dangerous situation creating that much vapor.
There is a BFFE on the Bzb Beest, its 48inches tube in shell, with the chiller at -30 it recovers 20lbs in 9 minutes @ a 33c boil passively with no nozzle
I honestly don’t know why you would want to evaporate and condense butane any faster than that, we have trouble keeping up as by the time you clear a shot and reload the collection is syrup
I’m not sure who has them in stock at this point but feel free to do what you want with it man. I can give you drawings if you want
Definitely going to have some water chilling before the dry ice, Its cold here so I try to utilize the free cooling as much as possible.
Ive been using GrayWolf’s Lair thermodynamic resources and examples to help my size figuring. 7.5sqft’ish surface area to condense 1lb/m with dry ice, or 71.5’ of 1/2" coil.
Good call with the chiller, I will eventually switch to one, but its not in my cards for this season.
@Myrrdin
Is that a 6" diameter shell on you condenser? Any idea of the surface area or number and size of tubes?
I aint looking to go over 2lb/min, Id be okay with 1 but am looking for a bit more.
You do have me wondering about the falling film though, perhaps it isnt necessary.
I dented my 12x12 collections last year so need a new solution, main priority is to not use any large clamps.
@FicklePickle
Cool, not sure Im going to go that route, gotta budget it. I was looking at your drawings in the prior art dump thread.
Yeah Its a 6inch, Dont know the surface area off the top of my head but I can take some pic’s & notes for you tomorrow
If you’re looking for 1-2 lbs a min, there’s a lot of cheaper ways to get there
I was wrong.
According to
How many calories in a big mac?
563 cal
Did you just convert calories into kw of energy?
Yeah…
Today’s my birthday today. I’m 30 today 
Again I think I’m excited and did the math wrong. Not trying to derail the thread.
Well, happy calories… er I mean …. birfday
