Welp, I'm just minding my business checking out the new posts side bar.
Oh, what's this? Electric brewing, cool... what's this all abou....
Mother of god... *backs away slowly*
Got the pressurizable boil kettle working. Took awhile. Just have some plumbing for the drains and several more RTD to install, then it's basic coding and leak checks.
View attachment 239599
All that stainless and the brass just sticks out like a sore thumb
Looks awesome, incredible workmanship! Did you get a chance to brew? I can't wait to see the brew day pictures!
Cheers & Happy New Years
Max
Back at you.
Yea I may still find a SS relief valve...
Looks awesome - do you have an estimated Maiden Brew Day?
For the love of God, I hope in two weeks! I'm on the boil kettle logic right now....
Ive been thinking about this right now and Im wondering if it would be worth while to put in some logic to ensure the boil off I want. I was thinking about watching the level as the boil progresses and if there is not enough evap the heating element would ramp up a bit. Are you planning on adding anything in your logic similar to this?
I don't have any direct means to measure the level in the BK, I just do a flowmeter batch in and out to get my pre and post boil volumes.
Is there anyway to calculate boil off by wort temp?
Huh, I thought in one of the pics I saw a float in your BK
As to your question, boiling is boiling right? you can have a more or less vigorous boil that alters the evap rate, but wont affect the temp.
I think Im leaning towards a pressure transducer on the BK. While the density will change, the affect on dP will be predictable as only water will be lost. This can easily be calculated during the boil to estimate the volume in the kettle during the boil.
What Im thinking for BK logic is to prior to starting the boil the P sensor readout is recorded when the kettle is full, then the element is set to max until it approaches the boiling point, upon reaching a boiling temp the element drops back to some value (lets say 60%) that will maintain the boil. Then after some time interval (~5min, 10min, .......?) the P sensor is read and the change is related to the volume of water boiled off. If this is an adequate amount for the time then the element level is maintained, if not its ramped up and the cycle repeats.
Im thinking this approach may also let me estimate SG. I know the flow total in, boil off volume, and P due to water column post boil. I can calculate the difference between the current P reading and what water would be to estimate the SG.
I got it on eBay. It's a 4kw heater @ 480v so for us it's like 1900w.
I've been reading your huge thread and haven't got to the end, but I hope you've caught your math mistake in the quote above.
If you half the voltage, you quarter the watts.
For the love of God, I hope in two weeks! I'm on the boil kettle logic right now....
Count down timer has started!
I'm in a similar boat, but just not to the level that you are. I want to brew by this spring (maybe 4/1/15 as an april fools day beer) with my eHERMS system.
Good luck to you - I can't wait to read the play-by-play, I am hoping to learn something from you. I need a PLC-101 class...
When were you on the Cheyenne? My brother was the M Div LCPO from 08-10.
Nice. Reminds me of my days spend on plant floors. Are those 23mm or 30mm switches/pushbuttons? What brand?
Kal
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