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-   -   Keggle Mash Tun Questions (http://www.homebrewtalk.com/f36/keggle-mash-tun-questions-367702/)

lhd7osc 11-14-2012 02:25 PM

Keggle Mash Tun Questions
 
So Iíve stepped up my game and I have an insulated Keggle Mash Tun utilizing a March 809 pump to recalculate the liquid.
In the past Iíve used a cooler and Batch Sparged. So with this new keggle/pump/burner set-up I have a few questions:

1. Since the MT is being recirculated continuously do I still need to do a Batch Sparge?
(The reason Iím asking this, couldnít I just put ALL the water needed into my MT keep it at 152ish THEN just raise the heat to 170 for the last 10 minutesÖ.done?)

2. Because Iím continuously recirculating the liquid, do I still need to do a Vorlauf?

3. Do I use a paddle to stir the Mash since I now have heat under it to keep it at a constant temperature?

My upgrade will be the Blichmann Tower of Power in a few weeks to control the burner. But for now, it's eyes on with manual adjustments.

lhd7osc 11-14-2012 06:08 PM

Should this question perhaps been in the Equipment and Sanitation section?

November 11-14-2012 09:28 PM

1. Sure you could, though the mash would be very thin, more along the lines of BIAB then a regular mash.
2. Since the grain bed would be set you could skip the vorlauf, but if you stirred or disturbed the bed in any way towards the end, you would need to vorlauf again.
3. You should stir at first in order to make sure all the grain is introduced to the strike water and to break up grain balls, after that stirring shouldn't be needed since the recirc will be regulating the temperature (hopefully).

lhd7osc 11-15-2012 12:02 AM

Awesome...thank-you.

SteelString_Will 11-15-2012 01:17 AM

Agree with answers 2 and 3 above.

For 1, even with recirculating and controlling for heat, your efficiency will be off if you don't sparge, Even if you put all the water in at once. That is partly because you are messing up the pH by altering the water to grist ratio and decreasing enzyme activity. The action of the water filtering down through the grainbed in fly sparging is really the only way to get the most out of your grain, keeps your grist ratio optimal, and dissolves more sugars as it goes. Highly recommend taking the extra time to fly sparge.

lhd7osc 11-15-2012 11:30 AM

Quote:

Originally Posted by SteelString_Will (Post 4590769)
Agree with answers 2 and 3 above.

For 1, even with recirculating and controlling for heat, your efficiency will be off if you don't sparge, Even if you put all the water in at once. That is partly because you are messing up the pH by altering the water to grist ratio and decreasing enzyme activity. The action of the water filtering down through the grainbed in fly sparging is really the only way to get the most out of your grain, keeps your grist ratio optimal, and dissolves more sugars as it goes. Highly recommend taking the extra time to fly sparge.

Okay....NOW it makes sense. I'm going to give it a shot this weekend....

Bobby_M 11-15-2012 06:55 PM

If you use the full volume then it's technically a no-sparge. The only problem with that is reduced efficiency.

Jbt 11-15-2012 07:10 PM

Quote:

Originally Posted by Bobby_M
If you use the full volume then it's technically a no-sparge. The only problem with that is reduced efficiency.

And ph could be high depending on you grain bill

Nosnum08 11-15-2012 09:15 PM

I will be doing a similar thing with my all grain setup. Should you still use a 2 quart water to 1 pound grain (I believe this is somewhat standard) and then sparge to get your liquid volume to what you need?

lhd7osc 11-16-2012 11:28 AM

Quote:

Originally Posted by Nosnum08 (Post 4593286)
I will be doing a similar thing with my all grain setup. Should you still use a 2 quart water to 1 pound grain (I believe this is somewhat standard) and then sparge to get your liquid volume to what you need?

For me, I'm using Beersmith to calculate the water to grain ratio. As I said above the question I was curious about dealt with; why not just put ALL the water in there. But as wonderfully pointed out....it will lower my efficiency. Also the Ph is an issue...which I'm already dealing with. My water out here in the desert is Ph 8! So I'm usually purchasing Reverse Osmosis water and tweak that.

There are just so many things to adjust, think about....it makes my head almost explode :drunk:


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