Maxi BIAB in 40L urn to make a double batch?

Post #1 made 13 years ago
Beer stocks are low and wife has a bun in the oven so I think that brew days will shortly be few and far between, which got me thinking about trying to do double batches on my current system without spending much/any more money.

Just wondering if anyone has done this before in a 40l urn? Is it possible without more mucking around than doing 2 seperate batches or moving to 2v?

I do have a large rectangular esky which hasn't yet been used for brewing (no manifold etc) and a number of 20l handy pails.

I figure I could probably preheat strike water in urn then transfer to esky or buckets and mash in these with another bag then tranfer back into urn to boil but it may end up being more cleaning/effort than just doing 2 seperate batches?

The advantage is I could be boiling while mashing etc so it may be a bit quicker in the end?

Anyone have any thoughts or suggestions?

Post #2 made 13 years ago
What is the internal diameter and height of your urn? What is your hourly evaporation? How much kettle loss do you expect for a normal 20L batch?

How many CM of headspace do you *need* when you mash, and boil?

What gravity would you like to do ;)

It should be a simple matter of plugging the numbers into the CE Calc to work out the strike and sparge volumes, and that's pretty much all there is to it :)

I have done 55L batches using a 50L pot. Wasn't exactly pleasant tho ;)

Anyway, you basically NEED to do some over-gravityness to get 40L out of a 40L urn, but that's not a problem. Pretty much 32L out of a 40L urn, and then you add 8L of water in the fermenter
Fermenting: -
Cubed: -
Stirplate: -
On Tap: NS Summer Ale III (WY1272), Landlord III (WY1469), Fighter's 70/- II (WY1272), Roast Porter (WY1028), Cider, Soda
Next: Munich Helles III

5/7/12
Post Reply

Return to “Full-Volume Variations - FVV (diluting and/or sparging)”

Brewers Online

Brewers browsing this forum: No members and 11 guests

cron