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@mengtx, how did it turn out? Framing up a half barrel batch, so would like to incorporate your feedback.

It’s solubility is much lower than CO2, see page 30 of the link below for mole fraction of dissolved N2 at atmospheric pressure (760mmHg) in the first column versus high pressure (2280mmHg) which is the range for nitro serving pressure. You only see mole fraction increase 19e6 to 56e6...

I had a similar choice to make as I have nitro beer and coffee on tap. I considered two options, the first the have put nitro and burst CO2 into the nitro beer periodically (e.g. drop keg pressure and push back up to serving pressure every few days) to keep it approximately right and the second...

Same here - I use Cams hot side and TCs cold side (with exception of cams for cleaning / sanitizing and a TC to cam adapter when pumping cooled wort into the conical). TBH, I do not break any of the NPT hot side and just employ hot PBW recircas mentioned above, so pretty much in line with...

My only thought (specialized for cold crashing) is carb stone in bottom through a T (after trub removal). This would help to reach lower temperatures during carbonation - if you spread out carbonation over a couple days through stepped psi increase every few hours, perhaps it keeps the beer...

The neoprene is not useless (still has a higher R value than 0 of the metal), but somewhat like a wetsuit as opposed to foam, so it’s a little more form than function in terms of looks. If you want to calculate the R value, put a thermometer inside and another one outside In the same location...

Heat capacity indicates the stored energy of the system, but is less useful in equilibrium conditions, since for the ambient air, it is essentially an infinite reservoir for all intents and purposes (you aren’t gonna cool your garage appreciably with your conical). If you insulated in a box...

I don’t think a bigger pump will help significantly, as the system is conduction limited on the beer side of the coil. Convection is already sufficiently high for turbulent heat transfer on glycol side of the coil, so instead is limited by surface area for heat pickup. If I remember right...

Report Report back your results for sure, as I’m stocked, so likely will be a month or so before I have space to brew this. The carapils was not in the Diesel version (75% Pilsner, 25% grits), and he noted color was right on, just didn’t drop clear, so would employ Irish moss or other finings...

I was similarly going to prime up a recipe. My summary from this thread is to start with Deisel88’s 80% close recipe, but employ 25% flaked maize instead of grits and shuffle up the hops schedule a bit based on his notes.

The general difference between maximum working pressure and recommended operating pressure comes down to lifing of pressure vessels. Maximum working pressure is factors of safety from yield strength while operating pressure is factors of safety from creep fatigue. As every cycle fatigues the...

The STC uses a thermistor, which measures temperature based on resistance. A change in wire length will change the calibrated accuracy of the unit, but based on the lengths, will be fractions of a degree, which is within the accuracy of a thermistor anyhow.

I would think it is due to temperature stratification. You can drop the temperature, but this will only help a small amount. Your best solution is to drop a couple fans in there. When I had a keezer, I put in some old 5V computer chip fans that I wired up to an old DC transformer. Depending on...

I suspect this comes from warm lines that cause CO2 to come out of solution and raise to the top of the line and collect at the tap. The gurgle is the liquid pushing out the gas bubble and start of flow through the tap.

A thorough CO2 purge keeps you safe against oxidation, so the only issue with excessive turbulence is driving the CO2 out of solution that can create excessive foaming. When I close transfer, I do so with pressure in the receiving keg moderated with a spunding valve and set my sending pressure...

I recall an episode of BrewDogs (did a few seasons run on Esquire) where they used a gimbal system to brew on a boat in high seas. Now that would be a cool project. Shame you came up with a much more reasonable idea. 😁

It’s also important to get all air pushed out of the tubing. With small to big area changes, the air can stay trapped behind the rearward facing step and not get filled with fluid (sure way to oxygenate!) Foolproof method is to prime the line with sanitizer (if small) and not blow it out before...

If your setup is amenable to it, you may wish to install a whirlpool in your boil kettle. It requires a pump and appropriate weld less pass throughs, but will setup a great majority of your solids in a cone in the middle after whirlpooling and letting settle for 10-15 min. I have all that as...

There are a lot of solutions in between, like a temperature controlled fridge / freezer that can accommodate your buckets. If you want the expansion of a bunch of functionality, all in one, then conical it is, though you will also need some form of temperature control for it as well. This can...

In short, I’m not canning. I use the instant pot to sterilize test tubes, pipettes, mason jars, etc. and non-hopped wort for long term storage after growth. I don’t vacuum seal anything, but flame lip, add yeast, cap, wait (if growing), and store, so it’s in any oxygen environment. My general...