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I'm just in the process of setting up and establishing the equipment profile for a 3 vessel system I got off eBay that consists of a 20 gallon mash tun, 20 gallon kettle and 30 gallon HLT (could interchange the HLT and kettle to suit batch size but initially starting out with a 20 gallon kettle). I did a boil off test last night for an hour and found I lost 6 litres - I guess it could be a bit less than 6 litres as I ran the whirlpool as I was bringing the water to a boil to circulate it so will have lost a few hundred ml in the pump and pipework. I did this by bringing 40 litres (kettle about 60% full) upto the boil, boiling for 1 hr and allowing to cool overnight and looking on the sight glass to see water loss, which was 6 litres.
As an aside, I noted that once I had brought the water to a boil and noted the level, then again at the end of the 1hr boil and read off the loss it was closer to 5 litres, so not sure to assume the boil off loss as observed with cold water or hot?
This sounds a bit high, certainly higher than I was expecting. Does it sound right compared to others experience?
My only datum is my 35ltr Brewzilla that had 3 litres/hr in the default equipment profile in Brewfather which seemed to be about right in my experience. I'm assuming if I were to swap the 20 gallon vessel for the 30 gallon vessel then I'd be looking at another couple of litres of boil off due to the larger diameter of the vessel.
Thanks
As an aside, I noted that once I had brought the water to a boil and noted the level, then again at the end of the 1hr boil and read off the loss it was closer to 5 litres, so not sure to assume the boil off loss as observed with cold water or hot?
This sounds a bit high, certainly higher than I was expecting. Does it sound right compared to others experience?
My only datum is my 35ltr Brewzilla that had 3 litres/hr in the default equipment profile in Brewfather which seemed to be about right in my experience. I'm assuming if I were to swap the 20 gallon vessel for the 30 gallon vessel then I'd be looking at another couple of litres of boil off due to the larger diameter of the vessel.
Thanks