Sparge Calculator...some things I don't understand about it. Need help

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fat x nub

fat x nub

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I started a thread awhile ago and should have asked there but forgot. Here is the sparge calculator i am using http://www.tastybrew.com/calculators/sparge.html I don't understand the catagory called "Wort lost to dead space" and the "desired kettle volume". I have a 7 gallon boiling kettle and lets just say my OG is 1.034 and i am using 9 gallons for a test run. Thanks guys. recpe volume is 5 gallons
 
Dead space is the amount of wort that will not drain from the mash tun through the bulkhead because the bulkhead may be a little higher off the bottom. You can test this by putting some water in with no grain and opening the drain. Let it drain out, then carefully pour out any water left behind and measure it.

Desired kettle volume should be about 1.5 more than your finished batch size because you'll lose about that much to evaporation. So, enter 6.5 gallons.
 
Bobby_M said:
Dead space is the amount of wort that will not drain from the mash tun through the bulkhead because the bulkhead may be a little higher off the bottom. You can test this by putting some water in with no grain and opening the drain. Let it drain out, then carefully pour out any water left behind and measure it.

Desired kettle volume should be about 1.5 more than your finished batch size because you'll lose about that much to evaporation. So, enter 6.5 gallons.
Click to expand...

aight thanks a lot...the recipe says i need 6.6 gallons of wort to collect
 

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