20 gal boilermaker evap rate

enohcs · 09-29-2011, 03:13 PM

I just got me a new 20 gallon boilermaker today!!!! I'm looking forward to trying it out this weekend.
Can someone who has a 20 gal boilermaker tell me what evaporation rates they are seeing?
I know all the variables that go into evaporation rates, I am just looking for an approximate so I can have some slight idea of what to expect.

BrewThruYou · 09-29-2011, 08:31 PM

One of those big variables is how many BTUs of heat you are putting under it.

**microbusbrewery** · 10-02-2011, 04:04 PM

Quote:

Originally Posted by BrewThruYou

One of those big variables is how many BTUs of heat you are putting under it.

and humidity

**RoadKing** · 10-02-2011, 06:43 PM

A test boil is the only way your going to know for sure. Put in 5 gallons and boil for an hour.

enohcs · 10-02-2011, 06:48 PM

Quote:

Originally Posted by RoadKing

A test boil is the only way your going to know for sure. Put in 5 gallons and boil for an hour.

That's what I was trying to avoid. Oh well. I'm making a Marzen on Tuesday, working with gravity info I should get a solid idea of exactly what to expect on future brews.

I guess a better question would be: For those who have gone from a keggle to a 20 gal boilermaker, what differences in evaporation rates have you seen?

hinke · 10-02-2011, 07:50 PM

I did not notice such a big difference.

**kydan47** · 10-04-2011, 03:10 AM

I have a 25 gal and on a moderate humid day, the promash is close, but I can tell you from experience that the biggest factor is the humidity. I once boiled for hours on a rainy day trying to get down to my volume!! The width of the pot is almost as critical. Cheers, Dan F.