Search found 78 matches

by Mr Sippy
Thu Jan 21, 2021 5:20 pm
Forum: Still Related Hardware
Topic: Raspberry Pi Still Contoller
Replies: 61
Views: 1470

Re: Raspberry Pi Still Contoller

If you are trying to run azeo, atmospheric pressure can cause issues. As a potstill guy, I hadn't considered the effect of pressure in the region of azeo. So I ran two data sets of min/max pressure over the last 12 month period through the calculator. One data set near Galveston (Hobby airport) and...
by Mr Sippy
Thu Jan 14, 2021 3:57 am
Forum: Still Related Hardware
Topic: Raspberry Pi Still Contoller
Replies: 61
Views: 1470

Re: Raspberry Pi Still Contoller

Now the points on pressure fascinate me! Me too. The min/max pressure over the last 12 months in my area was 731/749 (mmHg). Data is from the weather history at local airport. Per equations, 9% wash at 731mmHg boils at 92.3 - 9% wash at 749mmHg boils at 93.0. In absolute terms, these calculation ar...
by Mr Sippy
Sat Jan 09, 2021 10:15 am
Forum: Research and Theory
Topic: Hail The Mighty Thumper
Replies: 78
Views: 2536

Re: Hail The Mighty Thumper

I'd like to offer a few reasons on why I advocate for haggy's pot/thumper model. It gives an instructive view of what's happening. Veterans may yawn at that but a novice can find it enlightening. New members are often directed to the Temp/ABV charts to explain the unsteady state of a still. The mode...
by Mr Sippy
Thu Dec 31, 2020 6:11 pm
Forum: Still Related Hardware
Topic: Raspberry Pi Still Contoller
Replies: 61
Views: 1470

Re: Raspberry Pi Still Contoller

Hi Tim-- keeping an eye on this one. If you don't already have it, and can use C code; I have written a routine that equates mol%, abw, and abv based on atmospheric pressure and boiler temperature. https://homedistiller.org/forum/viewtopic.php?f=97&t=79784 Have a look at the output of the zipfile an...
by Mr Sippy
Sun Dec 27, 2020 10:25 am
Forum: Research and Theory
Topic: Hail The Mighty Thumper
Replies: 78
Views: 2536

Re: Hail The Mighty Thumper

haggy Thank you for your continuing work. It is a generous gift of time and expertise to a perspective of distilling the forum rarely sees these days. I miss the (non working) potstill calculator V2 that is on the parent site. It was a good representation of the physical behavior of a still and your...
by Mr Sippy
Mon Dec 21, 2020 8:54 am
Forum: Still Related Hardware
Topic: Raspberry Pi Still Contoller
Replies: 61
Views: 1470

Re: Raspberry Pi Still Contoller

Ambitious :D My memory on this is very dim but I believe a similar project was undertaken by a fellow who went by the name of 'amanofconstantsorrow. Pretty sure it was on this forum. His difficulty came when, as the still heated up, the performance characteristic of the stepper valve would behave un...
by Mr Sippy
Sat Dec 12, 2020 9:16 am
Forum: Research and Theory
Topic: Hail The Mighty Thumper
Replies: 78
Views: 2536

Re: Hail The Mighty Thumper

Hiya haggy I think your proposition to have a pot/thumper calculator validated by user data is an excellent one. For me, the pot still calculator on the parent site is a handy format. I hope that you are provided additional run data as requested. It is clear you've invested considerable effort. To r...
by Mr Sippy
Thu Nov 05, 2020 5:16 pm
Forum: Related Electric Accessories
Topic: Openstill - thermometer & heater control LCD + Wifi
Replies: 7
Views: 437

Re: Openstill - thermometer & heater control LCD + Wifi

He's using a couple of the polynomes from parent site calculators. No atmospheric correction. Stefunk- your code looks well put together. I have built a similar system but on Microchip family. Still working to implement data export but have in safety cutouts for rising temp and/or loss of coolant fl...
by Mr Sippy
Thu Oct 08, 2020 4:29 pm
Forum: Wiki Editors
Topic: Calculators
Replies: 8
Views: 1116

Re: Calculators

VLE_Calc.zip Here is a boiler temp to ABV calculator for a pot still that I wrote but have not yet tested. The equations involved for these type of thermodynamic problems are based on experimentation/observation under lab conditions. So without additional end-user coefficients/parameters, they all ...
by Mr Sippy
Tue Jul 21, 2020 11:21 am
Forum: Related Electric Accessories
Topic: Who here makes RTD Sensors?
Replies: 13
Views: 700

Re: Who here makes RTD Sensors?

Gotcha. Believe that piece is called resistance thermometer element. Quick search didn't yield much. Absent any other advice you might try calling digikey. Theyr'e very good on customer service. Good luck.
by Mr Sippy
Tue Jul 21, 2020 10:15 am
Forum: Related Electric Accessories
Topic: Who here makes RTD Sensors?
Replies: 13
Views: 700

Re: Who here makes RTD Sensors?

NIN-- regarding terms: I consider the rtd as the sensor. It needs a device to interpret and display the signal. I use a microprocessor programmed for still operation. If I need the wires longer I use regular old phone wire. I believe there are some arduino tutorials around for rtd readout. Not sure ...
by Mr Sippy
Mon Jul 20, 2020 12:09 pm
Forum: Related Electric Accessories
Topic: Who here makes RTD Sensors?
Replies: 13
Views: 700

Re: Who here makes RTD Sensors?

I put them in copper tubing also. They're a bit loose so I squirt a bit of thermal paste in also. Then sleeve the tubing and cable with heatshrink to hold in place.
by Mr Sippy
Mon Jul 20, 2020 9:56 am
Forum: Related Electric Accessories
Topic: Who here makes RTD Sensors?
Replies: 13
Views: 700

Re: Who here makes RTD Sensors?

I use digikey for all my stuff.
https://www.digikey.com/product-detail/ ... ND/6560922.

I have 4 of these on my still. 3 years, no problems.
by Mr Sippy
Fri Feb 28, 2020 12:51 pm
Forum: ** Welcome Center **
Topic: Hello from Cleveland!
Replies: 2
Views: 376

Re: Hello from Cleveland!

Another Buckeye?

The Willoughby Hills contingent says Welcome.

Don
by Mr Sippy
Thu Jan 09, 2020 8:58 am
Forum: Condensers/Cooling Methods
Topic: Basic question about condensers
Replies: 26
Views: 2212

Re: Basic question about condensers

20200109_110913.jpg I built the same condenser following Brutal. I strip at full power (5500W) using a trickle at first to a light stream at end. My water enters the condenser at 55F, drain to waste. In the config the water travels counter flow to vapor in both outer shell and inner tube. It is 20 ...
by Mr Sippy
Sat Sep 21, 2019 12:40 pm
Forum: Resources and Reviews
Topic: Liquid/Vapor phase diagram for ethanol/water solution
Replies: 30
Views: 4641

Re: Liquid/Vapor phase diagram for ethanol/water solution

For implementing the influence of pressure on the boiling temperature, we compared the common formulas like Antoine and Frost-Miller with data we found and decided for Frost-Miller. But we finetuned it, that it matches exactly 100°C at 0%abv and 78.17°C at azeotrope 97.18%abv at normal pressure, wh...
by Mr Sippy
Wed Sep 18, 2019 4:46 am
Forum: Resources and Reviews
Topic: Liquid/Vapor phase diagram for ethanol/water solution
Replies: 30
Views: 4641

Re: Liquid/Vapor phase diagram for ethanol/water solution

Hugelwilli... those are the best calculators I have seen so far. Very nice work and thank you. :thumbup: edit: From your site "The consideration of the air pressure or the altitude can have a significant influence on the result. When specifying the air pressure, the calculation is very accurate, giv...
by Mr Sippy
Tue Sep 17, 2019 6:35 pm
Forum: Resources and Reviews
Topic: Liquid/Vapor phase diagram for ethanol/water solution
Replies: 30
Views: 4641

Re: Liquid/Vapor phase diagram for ethanol/water solution

rubelstrudel wrote:
Tue Sep 17, 2019 2:08 pm
No, I don't. I was looking at that problem now. Going to ABW should be easy enough, but ABV is a different matter. Right?
Have a look at Edwins paper.
On the Conversion of Alcohol r1.pdf
(715.62 KiB) Downloaded 127 times
PM sent.
by Mr Sippy
Tue Sep 17, 2019 12:07 pm
Forum: Resources and Reviews
Topic: Liquid/Vapor phase diagram for ethanol/water solution
Replies: 30
Views: 4641

Re: Liquid/Vapor phase diagram for ethanol/water solution

The problem is, ethanol water mixtures don't behave ideal. That's what the activity coefficient does. I refer to Raoults but if the coefficient is employed its called the modified Raoults Law. I've lost my file but I would refer you to a paper: Simple Batch Distillation of a Binary Mixture, Housam ...
by Mr Sippy
Tue Sep 17, 2019 11:52 am
Forum: Resources and Reviews
Topic: Liquid/Vapor phase diagram for ethanol/water solution
Replies: 30
Views: 4641

Re: Liquid/Vapor phase diagram for ethanol/water solution

Nice work 8) :thumbup:

Remember the x axis depicts molar fractions. Do you have a utility to convert to ABV?
by Mr Sippy
Mon Sep 16, 2019 3:41 pm
Forum: Resources and Reviews
Topic: Liquid/Vapor phase diagram for ethanol/water solution
Replies: 30
Views: 4641

Re: Liquid/Vapor phase diagram for ethanol/water solution

I guess it would depend on your level of desired accuracy. For most, probably not. For instance I am in the Great Lakes region. Elevation ~700 ft. Using the aforementioned spreadsheet at 1 bar and 0.984 bar the difference in boil point is just under .5 degree C. If you are using rtd for measurement,...
by Mr Sippy
Mon Sep 16, 2019 6:23 am
Forum: Resources and Reviews
Topic: Liquid/Vapor phase diagram for ethanol/water solution
Replies: 30
Views: 4641

Re: Liquid/Vapor phase diagram for ethanol/water solution

The vapor liquid equilibria you find online you see are generated from readily accessible equations. At a base level they are simply algebraic. At a refined level it is a little more. I have made a study of this for the last year or so and maybe this will be helpful. This learning is solidly in the ...
by Mr Sippy
Sun Aug 11, 2019 5:32 am
Forum: Research and Theory
Topic: Why You Can't Control Temperature
Replies: 109
Views: 9721

Re: Why You Can't Control Temperature

...the boiling point is constantly changing as the different / lower boiling point alcohols leave the boiler. I'm sure SBB knows it; but for folks learning this, it's helpful to note the the lower boiling components won't leave the still at that boiling point. The alcohols are attached to water by ...
by Mr Sippy
Fri Aug 02, 2019 4:50 pm
Forum: Pot Distillation/Thumper and Design
Topic: Pint's 6 gallon still plans
Replies: 19
Views: 33862

Re: Pint's 6 gallon still plans

pintoshine made some videos on the construction of that still. Search youtube 'pintoshine still'

Its probably a slip fit. Can't remember.
by Mr Sippy
Mon Jul 29, 2019 8:33 am
Forum: Research and Theory
Topic: Cut Points? Foreshots? Heads and Tails? Feints?
Replies: 93
Views: 90117

Re: Cut Points? Foreshots? Heads and Tails? Feints?

There's a sticky at the top of this section on rerunning feints also.
viewtopic.php?f=1&t=18823
by Mr Sippy
Mon Jul 29, 2019 7:04 am
Forum: Condensers/Cooling Methods
Topic: Anyone tried electroplating for increased surface area?
Replies: 13
Views: 1501

Re: Anyone tried electroplating for increased surface area?

I am thinking that increasing surface area, even microscopically, would make a difference. Maybe even measurable. The entire length won't "load up' with liquid. However, increasing surface area by adding mass may be a different story. Interesting idea.
by Mr Sippy
Thu Jul 18, 2019 9:11 am
Forum: The Construction Site
Topic: My Keg Build
Replies: 31
Views: 3081

Re: My Keg Build

Expat wrote:In practice, I use the the source valve to set the total available flow and the output side value to resist and slow it down to where I want it. Works well.
Second that :thumbup:
Gate valve gives tighter flow control than the aforementioned ball valve though.
by Mr Sippy
Wed Jul 17, 2019 12:03 pm
Forum: The Construction Site
Topic: My Keg Build
Replies: 31
Views: 3081

Re: My Keg Build

schu777 wrote:5) Can I put a ball valve on the input of coolant water to the Liebig to control the speed of water coming in?
Better to put it on the output side, I believe.
by Mr Sippy
Thu Jul 11, 2019 10:50 am
Forum: The Construction Site
Topic: My Keg Build
Replies: 31
Views: 3081

Re: My Keg Build

For copper joins the flux will be OK. Many will recommend Harris Stay Clean. It is a superior product but the paste flux is not bad. It will be heavy on the residue so be mindful of cleaning. I try to clean the joints as I go along for easy access. If you have stainless to copper in the mix you'll w...
by Mr Sippy
Wed Jul 10, 2019 8:11 am
Forum: The Construction Site
Topic: My Keg Build
Replies: 31
Views: 3081

Re: My Keg Build

There is also this safety alert on kegs: viewtopic.php?f=33&t=50513