Hex
Well-Known Member
+1 for the 22 gal. version.
The boil off rate doesn't have anything to do with the diameter of the opening.
Care to share what you took away from it?I just read a lengthy thread on the boil topic.
I beg to differ. Do me a favor. Fill a 20"x20" pan with a gallon of water. Then fill a 2" cylinder with 1 gallon of water. Then check back here and tell us which one is dry first.
Boil-off rate is absolutely a function of the surface area of the kettle opening.
Boil-off rate is absolutely a function of the surface area of the kettle opening. In fact, at sea level, one can approximate the gallons boil-off per hour = pi * r squared * 0.007289791872. [Note the absurd precision on the constant, lol].
Look at an example. Keep it easy at say we have an immersion element. Find how much power you need to maintain the wort at a little under boiling. This is equal to the heat lost around the perimeter of the vessel. I don't know what it is, say 1000w. Any and all power put into the system, above and beyond this value, goes into vaporizing the water. Add another 1000w (J/s), and you are vaporizing 1000/2260 = 0.44g/s. Add another 1000w and you will vaporize 0.88g/s.
That's roughly 3.5L/hour.
Seems clear as rain to me.
Thanks for the info. I, too just bought one of these kettles and was just figuring it would take me a batch or two to get my new boil-off rate. This equation really helps my initial estimate. Just to be sure, though: I'm assuming this equation is using inches, correct?
In that thread, crusty and RDWHAHB have it right.
Back to the Penrose Kettle...
I have one on order with a buddy and will update with our boil-off rate once we get a couple of batches under our belt.
Will this diptube attach to the inside of a Penrose kettle?
Looks like I'll be brewing with my penrose on Friday if UPS does in fact drop it at my house as scheduled for thursday. Due to its height I'll have to change my setup a bit. Right now my grill is perfect to use as a brewing stand but that won't be the case when this kettle arrives. I'll take pics of anything more detailed for you guys that isn't already pictured on the brewhemoth site.
what's the wall thickness?
what's the bottom thickness?
thanks.
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