[Open Source Design Project] - Falling Film Evaporator

Hash and Stuff Solvent Recovery
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Since my HEs are restricted to 1/2 inlet and outlet and my heating closed loop is all piped to 3/4".
i think i can split the left side of this setup, with a manifold and use 3 circ pumps (one for each column).
Ive got plenty of space on that board to mount two more.

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Now ive gotta research fluid mechanics to figure whats the best way to split it.
Or do i just say fuck it and exhange that top left t for an x, add in one more t and a corner for the other 2 pumps?
Its gonna make it complicated to charge the system though🤔
Btw @Juice311 i really really appreciate your help, its making me come of up of different ways to look at it :+1: and i think putting a pump infront of each column is the ticket.
Maybe splitting my column into sections wasnt a bad idea after all :wink:

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vice versa. The tankless has always been one of those things i could never figure out from back in the day. Its always bothered me because how could something simple become an endless headache. Ive watched multiple people and companies rig up wild hot loops and all of them had troubles one way or the other with them. This was just the time to start figuring it out again. I just stumbled across something.

This is a software program to correctly size pumps and heat exchangers. Found it hiding in a plumbing forum.
Also here is some stuff that could help

i found this book that has been highly praised in the plumbing community for PID routes on what we do. This forum is where i would start trying to find the answers or ask for help. These calculations are in-depth and many quirky variables play along. You cant forget about fluid mechanics without thermodynamics :slight_smile:
https://heatinghelp.com/store/detail/pumping-away-and-other-really-cool-piping-options-for-hydronic-systems

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Has anyone used vacuum to pull ethanol mix into FFE? Would that require too much vacuum on the system? been following this thread for some time now and am really thinking about putting one together.

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That’s how my prototype has been running all these years.

She has gear pumps for the outlets, but is fed via the vacuum and a needle valve to throttle

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Use a vacuum regulator to find your sweet spot

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but that takes all the art out of the knob twiddling :wink:

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You know what’s funny is I’ve had a vac regulator in storage for a few years now and I still use a manual ball valve on the roto aka the “oh shit” valve

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Fantastic!

I have my list with Mcmaster, Glacier tanks, and GW Kent. going to get this sucker put together. This thread has been so great.

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Nice CNC, love Haas machines :+1::slightly_smiling_face:

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We have a amada laser and an old ass cnc lathe too!

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I learned to operate a brake press, on an Amada👍 Now the company I’m at has a lot of Cincinnati, Haas

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I worked on a heat exchanger for truck engines that had to have a million fins really close together and I used a kiln and solder. you should be able to find a 8-10 foot kiln in any major city

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If you weld the tubes into the tube sheet first, then weld the tube sheets into the outer wrapper, you will joint access.

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Hoping I am not too late to get into this with you guys.

I am a Metal working professional looking to build a falling film who can offer machining, fabrication, digital design and custom manufacturing.

How can I help. Please feel free to reach out.

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Welcome @JMuirish. Where are you located?

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Dropping this here

US $420.00 | Intelligent Filling Peristaltic Pump For Vial Filling And Liquid Distribution

https://a.aliexpress.com/_mtmY13B

98$ shipping but it looks neat.

https://www.crpump.com/ ayyyyyy I found a new manufacturer for cheap shit.

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It only does 320 ml/m

Your best bet would be a gear pump

I’ll be posting my FFE in the next couple weeks as I assemble it, we built everything ourselves except the actually tube and shell and plate heat exchanger

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You can get way bigger ones than that. Check out Golander for US based reseller.

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A gear pump is cheaper to build even with vfd

The peristaltic pump with head that does 6 liters a minute is 1850

My gear pump was 1500 with vfd, head, coupling and motor

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Good for you, not doubting it. Just wanted to show that there are options for large peristaltics. And they can be better in some cases (like when the stuff you’re pumping has lots of crusties in it).

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