Coldbreak Brewing HERMS Giveaway!

HomeBrewSupply AMCYL Brew Kettle Giveaway!


Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Batch sparging the dead zone
Reply
 
Thread Tools
Old 07-22-2009, 08:35 PM   #1
Judochop
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2008
Location: Libertyville, IL
Posts: 333
Liked 7 Times on 5 Posts

Default Batch sparging the dead zone

Iím considering switching to a batch sparging method for my small to medium sized beers, but as I was thinking through the process, I came upon a concern.

The set-up: Iíve got a 10 gallon stainless steel MLT with a dead space that may be 2 gallons. (I havenít measured it yet, but Iím pretty sure itís well beyond 1 gallon.)

I want to collect 7 gallons pre-boil, thus I plan to collect 3.5 gallons in my first run-off. But even at a humble 9 lbs of grist, Iíve got 3 gallons of mash water mixed in there plus another 2 gallons below in the dead space. Minus roughly a gallon of absorption, Iím still looking at 4 gallons in my first run-off.

Now, if I simply add another 3 gallons to the MLT, I see 2 gallons of that water going straight to the dead space, leaving me with only 1 gallon to stir into the grains and rinse the sugars. Is that enough water? Am I going to have a hell of a time stirring a Ďmashí this thick? I feel like most people doing batch sparge are using igloo coolers with dead spaces much smaller. I donít know why I feel that wayÖ itís just an instinct.

Any batch spargers out there with words of comfort, or better yet, a MLT like mine?


Judochop is offline
 
Reply With Quote
Old 07-22-2009, 08:44 PM   #2
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 4 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 22,752
Liked 1300 Times on 854 Posts
Likes Given: 35

Default

2 gallons of deadspace is unacceptable should be corrected. How about a picture of the setup? What kind of separation medium do you have in there? False bottom?
Why is your deadspace so large? Just to make sure we're talking about the same thing, if you fill your MLT with 4 gallons of plain water and open the valve, are you saying only 2 gallons will drain out? You need a siphon tube to the bottom of the tun.


__________________
Welcome to BrewHardware.com. I love you.
New 100% Stainless Steel Heating Elements are IN! ULWD 5500w Ripple, 2000w, 1500w, etc
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.
Bobby_M is online now
 
Reply With Quote
Old 07-22-2009, 08:50 PM   #3
david_42
Feedback Score: 0 reviews
 
david_42's Avatar
Recipes 
 
Join Date: Oct 2005
Location: Willamina & Oak Grove, Oregon, USA
Posts: 25,674
Liked 141 Times on 134 Posts

Default

By dead space, I assume you mean space below the false bottom and not the volume left after draining. What I would do is drain the first 2 gallons into a separate pot and drain the rest of the first runnings into the kettle. Then pour the first two gallons back into the mash tun and add the sparge water.
__________________
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"

"I would like to die on Mars, just not on impact." Elon Musk
david_42 is offline
 
Reply With Quote
Old 07-22-2009, 08:52 PM   #4
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 4 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 22,752
Liked 1300 Times on 854 Posts
Likes Given: 35

Default

I thought that too but now I'm thinking it's impossible. I have a keg MLT with a FULL 15" diameter false bottom and it only takes 7/8ths of a gallon to hit the FB.
__________________
Welcome to BrewHardware.com. I love you.
New 100% Stainless Steel Heating Elements are IN! ULWD 5500w Ripple, 2000w, 1500w, etc
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.
Bobby_M is online now
 
Reply With Quote
Old 07-22-2009, 09:06 PM   #5
Judochop
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2008
Location: Libertyville, IL
Posts: 333
Liked 7 Times on 5 Posts

Default

Quote:
Originally Posted by david_42 View Post
By dead space, I assume you mean space below the false bottom and not the volume left after draining. What I would do is drain the first 2 gallons into a separate pot and drain the rest of the first runnings into the kettle. Then pour the first two gallons back into the mash tun and add the sparge water.
D'OH!

<sheepish>

(Yes... that is what I meant by dead space; the space under the false bottom.)

Thanks for the idea! I may have been as premature with my estimate as I was wrong about my use of the term 'dead space'. I will do an exact measurement tonight! (But for the record, I do think it's more than a gallon. It's an older-model MLT from Morebeer.com with the stainless false bottom.)
Judochop is offline
 
Reply With Quote
Old 07-23-2009, 12:49 AM   #6
jpc
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2009
Location: Santa Clara, CA
Posts: 1,925
Liked 64 Times on 49 Posts

Default

Quote:
Originally Posted by david_42 View Post
By dead space, I assume you mean space below the false bottom and not the volume left after draining. What I would do is drain the first 2 gallons into a separate pot and drain the rest of the first runnings into the kettle. Then pour the first two gallons back into the mash tun and add the sparge water.
I'm confused... what exactly would this accomplish?
jpc is offline
 
Reply With Quote
Old 07-23-2009, 01:20 AM   #7
ajf
Senior Member
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
ajf's Avatar
Recipes 
 
Join Date: Oct 2005
Location: Long Island
Posts: 4,643
Liked 103 Times on 97 Posts
Likes Given: 39

Default

If you're batch sparging, you could tilt the MLT in the direction of the outlet. Dead space will drop to an insignificant amount.

-a.
__________________
There are only 10 types of people in this world. Those that understand binary, and those that don't.
ajf is offline
 
Reply With Quote
Old 07-23-2009, 03:39 AM   #8
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 4 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 22,752
Liked 1300 Times on 854 Posts
Likes Given: 35

Default

Quote:
Originally Posted by jpc View Post
I'm confused... what exactly would this accomplish?
I'm not quite following either. You'll definitely have to run a slightly thinner mash, but you certainly want to drain off all the wort in first runnings if batch sparging is desired. Tuns with false bottoms like this are better for fly sparging.
__________________
Welcome to BrewHardware.com. I love you.
New 100% Stainless Steel Heating Elements are IN! ULWD 5500w Ripple, 2000w, 1500w, etc
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.
Bobby_M is online now
 
Reply With Quote
Old 07-23-2009, 12:54 PM   #9
Whiskey
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2007
Location: Granville, Ohio
Posts: 735
Liked 10 Times on 10 Posts

Default

Pictures would be fantastic. Depending on your setup it may be just a matter of altering your diptube/false bottom.
__________________
Insert catchy signature here....

Whiskey is offline
 
Reply With Quote
Old 07-23-2009, 01:29 PM   #10
Judochop
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2008
Location: Libertyville, IL
Posts: 333
Liked 7 Times on 5 Posts

Default

Thanks fellas. Tonight I'm going to get some real numbers (like the actual volume under the false bottom) and some pictures for the gang, and will have them back up here in the morning.

I’m starting to get the feeling that my system just ain’t cut out for batch-sparging. I may be a fly-guy by necessity. Presuming my estimate of a 2-gallon space below the false bottom is correct, if I ever wanted to do a double batch-sparge, I’d be having to split a piddly 2-3 gallons of water between the two sparges, and losing almost all of that sparge water to the space below the FB. That doesn't seem practical at all.

A question to those who do batch sparge… how much initial run-off do you typically get in your systems, and how much sparge water are you subsequently using? And what are those systems? I’d like to know just how different my set-up is from others’.



Judochop is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
When batch sparging....... NTOLERANCE All Grain & Partial Mash Brewing 18 07-20-2009 02:03 AM
Batch Sparging casper0074 All Grain & Partial Mash Brewing 8 08-14-2007 09:20 PM
Need Batch Sparging Help New2HomeBrew All Grain & Partial Mash Brewing 2 08-12-2007 08:48 PM
Fly Sparging Vs. Batch Sparging New2HomeBrew All Grain & Partial Mash Brewing 28 08-08-2007 05:25 PM
Batch Sparging brewboy All Grain & Partial Mash Brewing 23 03-31-2005 06:50 AM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS