National Homebrew Club Ireland

Brewing Discussions => All Grain Brewing => Topic started by: Eccipoo on October 03, 2016, 05:32:12 PM

Title: Dead space calc
Post by: Eccipoo on October 03, 2016, 05:32:12 PM
Just wondering is there an easy method to calcutlating dead space in your tun?

Is it as simple as having a Pyrex jug and adding water until it's 'just' at the point before coming out of the valve?

If so my dead space is coming in around 2.9litres. It's an igloo 37 litre cooler. Is this sounding right?


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Title: Re: Dead space calc
Post by: dcalnan on October 03, 2016, 05:38:01 PM
Other way around, drain the mash tun as much as you can the siphon effect will draw out more water due to the suction, then pour what ever is left in the tun into the Pyrex jug and that's your dead space. Mine is something like .5L
Title: Re: Dead space calc
Post by: molc on October 03, 2016, 05:39:00 PM
Sounds pretty much spot on to me
Title: Re: Dead space calc
Post by: Eccipoo on October 03, 2016, 07:10:45 PM
Grand so, thanks for that lads


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Title: Re: Dead space calc
Post by: neoanto on October 05, 2016, 10:36:18 AM
I think the value you got at the start was a bit more realistic.
i have a dead space of 3l in my 40ltr igloo cooler.
when you have the grain in and your draining the last few bits, are you really gona wait forever to get that last 3ltr?
the grain holds most of that in.
so to be honest a real way to test it would be do your mash and collect your wort.

when thats all done drain the remaining liquid out, could take a half hour just for that last bit.
thats what i have classified as my dead space.