Kegconnection Complete Starter Kit and More Giveaway!


Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Direct Fired MLT?

Reply
 
LinkBack Thread Tools
Old 08-02-2007, 07:52 AM   #1
AGBrewer
Feedback Score: 0 reviews
 
AGBrewer's Avatar
Recipes 
 
Join Date: Feb 2007
Posts: 421
Liked 4 Times on 1 Posts

Default Direct Fired MLT?

Is it worth it. I aquired another keg today(legal). So I am thinking about doing away with the 10 gal rubbermaid. I would like some input from people who use this method. Obviously stirring while heating is a must. I would rather build a mash stirrer than a pump. Chime in with opinions please

__________________
AGBrewer is offline
 
Reply With Quote Quick reply to this message
Old 08-02-2007, 09:42 AM   #2
ScubaSteve
Feedback Score: 0 reviews
 
ScubaSteve's Avatar
Recipes 
 
Join Date: May 2007
Location: New Bern, NC
Posts: 3,674
Liked 61 Times on 46 Posts
Likes Given: 11

Default

I don't use this method, but am in the process of building a HERMS. I considered direct-fire but decided against it when I though about the unreachable space below the false bottom. Even if you stir religiously, you will still probably burn the wort/mash. You probably oughta stick with a pump. Pumps may be costly, but can be used for many different things in the process....from vorlaufing to whirlpooling cold break, to handling finished wort and sending it to a fermentor.

ScubaSteve is offline
 
Reply With Quote Quick reply to this message
Old 08-02-2007, 03:49 PM   #3
Lil' Sparky
Cowboys EAC
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Lil' Sparky's Avatar
Recipes 
 
Join Date: Feb 2006
Location: Honolulu, HI
Posts: 4,013
Liked 48 Times on 32 Posts

Default

I've got a direct-fired keg MLT with a false bottom (very little dead space). I've used it for step mashes with no problem. I just keep the burner turned down low and stir constantly so that the temp changes gradually at ~ 2 deg / min. There's no burning or scorching. I'll add a pump soon to recirculate during the steps. This should eliminate the need for stirring.

FYI - Brutus 10 uses a direct-fired MLT. http://www.alenuts.com/brutus.htm

__________________
Lil' Sparky is offline
 
Reply With Quote Quick reply to this message
Old 08-02-2007, 03:59 PM   #4
ScubaSteve
Feedback Score: 0 reviews
 
ScubaSteve's Avatar
Recipes 
 
Join Date: May 2007
Location: New Bern, NC
Posts: 3,674
Liked 61 Times on 46 Posts
Likes Given: 11

Default

Good input, Brutha. I may have to take this into account. A direct fired MLT makes for a MUCH more simple plumbing setup.

ScubaSteve is offline
 
Reply With Quote Quick reply to this message
Old 08-02-2007, 04:00 PM   #5
ebeer
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2007
Location: Concord, CA
Posts: 198
Liked 1 Times on 1 Posts

Default

I have a direct fired MT and love it. I do step mashing and mashouts with no scorching at all. I would recommend low heat and constant recirculation to assure no burning or hot spots. I use a march pump and recirculate through my sparge arm.

I will say that direct heat requires some attention, it's certainly not a set it and forget method unless you have mad skills ala Alenut of Brutus10 fame. I keep the heat down low, recirculate, and watch the temperature rise. When I get 1-2 degrees shy of my target temp I turn the gas off and allow the mash to creep to where I want it. This method suits my style, and keeps me hands on, I like it.

HERMS is a great alternative too, especially if you have an electric heating element in your HLT with a digi controller. No scorching, no babysitting, and assured consistent mash temps. Personally, I just like being more involved - but there a many ways to skin a cat.

__________________
My homebrew site
ebeer is offline
 
Reply With Quote Quick reply to this message
Old 08-02-2007, 04:13 PM   #6
Lil' Sparky
Cowboys EAC
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Lil' Sparky's Avatar
Recipes 
 
Join Date: Feb 2006
Location: Honolulu, HI
Posts: 4,013
Liked 48 Times on 32 Posts

Default

One thing I forgot to mention is that I also really like being able to heat the strike water in the MLT. No preheating of cooler and lifting/pouring/transferring hot water from another pot.

It took me a while to dial in the strike temps as the keg holds a lot of heat, but now that I have it works great.

__________________
Lil' Sparky is offline
 
Reply With Quote Quick reply to this message
Old 08-02-2007, 05:25 PM   #7
AGBrewer
Feedback Score: 0 reviews
 
AGBrewer's Avatar
Recipes 
 
Join Date: Feb 2007
Posts: 421
Liked 4 Times on 1 Posts

Default

Ok, so just recirculating wort through the mlt keeps scorching away, right? Does it not make any difference to move the grains as well? Maybe I'll break down and buy a pump

__________________

Last edited by AGBrewer; 08-02-2007 at 07:43 PM.
AGBrewer is offline
 
Reply With Quote Quick reply to this message
Old 08-03-2007, 06:14 PM   #8
Shockerengr
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2007
Posts: 438
Liked 20 Times on 17 Posts
Likes Given: 1

Default

I'm in the process of building my rig, and intend to go the direct fired route with a march pump, largely because i want to go all gas without electrical elements (ironic considering i'm an electrical engineer )

It'll be an custom electronic control system with a 25,000btu burner salvaged from an old old furnace

__________________
Shockerengr is offline
 
Reply With Quote Quick reply to this message
Old 08-04-2007, 05:51 AM   #9
ScubaSteve
Feedback Score: 0 reviews
 
ScubaSteve's Avatar
Recipes 
 
Join Date: May 2007
Location: New Bern, NC
Posts: 3,674
Liked 61 Times on 46 Posts
Likes Given: 11

Default

Good info on the direct fire. I recently got a good score on someone selling their gear, and have a spare 50' of 1/2" copper with 2 march pumps. My kegs are pretty much coupled already. I do like the mash arm though! I'm trying to come up with an acceptable method to return the wort to the top of the grainbed gently and without losing too much heat.

__________________
UNIBREW 5500 SINGLE VESSEL BREWERY
WOODEN SINGLE TIER
ScubaSteve is offline
 
Reply With Quote Quick reply to this message
Old 08-09-2007, 02:31 PM   #10
Hopfan
Nice Beaver....
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Hopfan's Avatar
Recipes 
 
Join Date: Sep 2006
Location: Lincoln University, PA
Posts: 664
Default

Quote:
Originally Posted by ScubaSteve
Good info on the direct fire. I recently got a good score on someone selling their gear, and have a spare 50' of 1/2" copper with 2 march pumps. My kegs are pretty much coupled already. I do like the mash arm though! I'm trying to come up with an acceptable method to return the wort to the top of the grainbed gently and without losing too much heat.
The UPS Gods just delivered these from McMaster:

Material Polypropylene
Polypropylene Material Polypropylene
Backing Plain Back
Shape Balls
Ball Type Hollow
Diameter .787"
Translucent Translucent with White Tint
Highest Temperature +100° to +200° F
Operating Temperature Range Up to +190° F
Tolerance Standard
Specifications Met Not Rated

Quantity
150 | 2000

Quantity
150 3748K31 $15.71 per Pack of 150

2000 3748K21 182.18 per Pack of 2000

Sorry, McMaster's website makes it difficult to post a direct link that works. I plan on floating these on top of the mash to both insulate and provide a gentle path for the sparge water to return to the grain bed. Haven't tried them yet, hopefully next week, but I've got a LOT of balls.

edit: BTW, 300 of the 20mm balls provide a good cover in a 10 gallon round cooler.
__________________
When we find out how many bodies you buried in the basement, will we be more shocked or disappointed at the number?

Zip ties are the duct tape of the 21st century

Bad Dog Brewing
Sit...Stay
Hopfan is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
false bottom for direct-fired recirculation mash? billtzk All Grain & Partial Mash Brewing 24 10-15-2010 04:30 PM
Electric direct fired mash tun? Gussymo DIY Projects 16 03-23-2009 10:22 PM
direct fired recirculating mash question - mashing now sleepystevenson All Grain & Partial Mash Brewing 9 03-02-2009 05:36 PM
Step mashes with a direct fired recirculating MLT? sleepystevenson Equipment/Sanitation 6 10-29-2008 05:30 PM
Let's talk direct fired MLTs.... Dude Equipment/Sanitation 33 04-13-2007 12:09 AM