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Old 03-12-2010, 06:04 PM   #1
nealperkins
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I have a B3 27 gallon mashtun that needs better insulation. I currently have the foil bubble wrap that seems to need attention every brew session.

There must be a better way!

I did see that Bobby M had used mineral wool and clad that in some sort of metal wrapping (complete with 3 closures). That looks very sweet. Dunno what kind of metal and closures that is?

I appreciate the ideas!

 
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Old 03-12-2010, 06:11 PM   #2
insaneferret
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Get the mineral wool from McMaster - http://www.mcmaster.com/#9328k41/=66rtdl

Bobby just used a big piece of sheet aluminum - you can get that from ye olde home despot or a metal supply store

Wrap it on there tight with some ratcheting tie-downs and just rivet the aluminum sheets together with cold pull rivets then fill in the edges with caulk

 
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Old 03-12-2010, 06:21 PM   #3
arturo7
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I used this stuff on a 60L HDPE drum. If my estimates are correct, at 1" thick it provides the same or better insulation as the 10 gallon cooler everyone uses.

http://www.mcmaster.com/#catalog/116/3483/=66rzfw
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Old 03-12-2010, 06:54 PM   #4
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polyurethane will melt if it gets too hot, thats the advantage to the mineral wool for direct fired MLTs, but that will work if there isn't too much fire about

 
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Old 03-12-2010, 07:42 PM   #5
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The thread linked in my sig has all kinds of discussion on the materials..
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Old 03-12-2010, 07:58 PM   #6
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Quote:
Originally Posted by insaneferret View Post
polyurethane will melt if it gets too hot, thats the advantage to the mineral wool for direct fired MLTs, but that will work if there isn't too much fire about
These are 100% electrically heated brewing systems only, they rape us with propane prices in my area, propanes a bad word with my friends and fellow wiremen brewers.
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Old 03-12-2010, 10:17 PM   #7
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I just picked up a surplus wool blanket for my sanke MLT for $20. The 62 X 80 inch blanket was large enough for at least 4 layers covering the sides of the keg. I'll report back with pics and temps after I use it this weekend.

 
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Old 03-12-2010, 10:54 PM   #8
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Well, the solution is certain elegant - I wish I could do it. My system has the tippy dump option and the clearance from the kettle to the support arms would not allow such a thick blanket...pity!

 
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Old 03-13-2010, 02:14 AM   #9
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Quote:
Originally Posted by nealperkins View Post
Well, the solution is certain elegant - I wish I could do it. My system has the tippy dump option and the clearance from the kettle to the support arms would not allow such a thick blanket...pity!
Relocate the tippy dump bracing for more clearance but allow for the added strain on the kegs trunnion pins.
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Old 03-13-2010, 03:00 AM   #10
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Quote:
Originally Posted by arturo7 View Post
I used this stuff on a 60L HDPE drum. If my estimates are correct, at 1" thick it provides the same or better insulation as the 10 gallon cooler everyone uses.

http://www.mcmaster.com/#catalog/116/3483/=66rzfw
I have this on my HLT, MT and BK... all electric.
Has worked great through 2 brews so far.
I use nylon straps to hold it in place and remove it for cleaning the vessels.

Ed

 
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