A simple HERMS - Page 3 - Home Brew Forums
Home Brew Forums > Home Brewing Beer > DIY Projects > Brew Stands > A simple HERMS

Reply
 
Thread Tools
Old 03-03-2010, 06:00 PM   #21
Jud
Recipes 
 
Sep 2009
Tucker, GA
Posts: 356
Liked 3 Times on 3 Posts


Ok so if you have your wort drained into your bucket, and your sparge water transferred over to your mash tun. Then pour your wort into the BK I don't think there would be a great lose of heat. Think I can live with this for now at least. It is a improvement for my system.

Why not just add a 3rd kettle. That is an easy one for me. My brew table was given to me. It is very similar to the Little Giant Stock Picking Truck, just better tires and heavier built. I can only fit 2 kettles on top of it, and all of my brew stuff goes on the bottom shelf.
__________________
Beer is proof God loves us, and wants us to be happy.
-Ben Franklin

 
Reply With Quote
Old 05-08-2010, 05:39 AM   #22
HappyValley
HBT_LIFETIMESUPPORTER.png
Recipes 
 
May 2009
santa cruz
Posts: 16

What you guys are describing is basically my setup: One burner under BK, cooler MLT, and cooler HLT to briefly hold sparge water while collecting first runnings in BK. I'm thinking about adding a HERMS recirculation during mash rest in order to keep my mash temps spot on, but I can't help wondering if it isn't easier just to improve the insulation of the MLT somehow in order to keep the temp super constant? HERMS makes a lot of sense when your MLT isn't perfectly insulated. But an Xtreme cooler? How much temp are you folks losing in your coolers during your mash rests? (I seem to lose about 1-2 degrees but need to conduct more careful tests)

 
Reply With Quote
Old 05-10-2010, 03:05 AM   #23
HappyValley
HBT_LIFETIMESUPPORTER.png
Recipes 
 
May 2009
santa cruz
Posts: 16

Just to follow up on this - I brewed today with my newly installed thermometer in my MLT. Lost 4-5 degrees in the MLT during a 75 minute mash. I'm starting to see the benefit of HERMS!

 
Reply With Quote
Old 05-10-2010, 03:31 PM   #24
Walker
I use secondaries. :p
HBT_LIFETIMESUPPORTER.png
 
Walker's Avatar
Recipes 
 
Sep 2005
Cary, NC
Posts: 10,987
Liked 101 Times on 89 Posts


Quote:
Originally Posted by nickfogler View Post
Just to follow up on this - I brewed today with my newly installed thermometer in my MLT. Lost 4-5 degrees in the MLT during a 75 minute mash. I'm starting to see the benefit of HERMS!

4-5*F seems excessive. If I avoid opening my cooler, I lose just a couple of degrees during a 60-70 minute mash.

Where is your thermometer installed in your TUN? I put a thermowell in mine so that I could monitor temps without opening the thing, but I made the mistake of installing the thing too high up the wall of the MLT. For a 5 gallon batch, my probe is monitoring the liquid above the grain bed rather than the temp if the grain bed directly. This results in my thermometer reading temps that are about 5*F lower than the actual mash temp.

If I shake the cooler up then the temp on the thermometer rises and gives me a better reading, but as the grain settles back down below the probe, the temp on the display starts to fall.

Dumb mistake on my part with the location of the probe. It does read accurately on 10 gallon batches, though.
__________________
Ground Fault Brewing Co.

 
Reply With Quote
Old 05-10-2010, 04:20 PM   #25
DKershner
Recipes 
 
Jul 2009
Bend, OR
Posts: 1,870
Liked 28 Times on 23 Posts


Quote:
Originally Posted by nickfogler View Post
Just to follow up on this - I brewed today with my newly installed thermometer in my MLT. Lost 4-5 degrees in the MLT during a 75 minute mash. I'm starting to see the benefit of HERMS!
You can do a mashout as well, which is very difficult to do in most mash tuns with an infusion, you would need a very large one.

 
Reply With Quote
Old 05-10-2010, 06:49 PM   #26
HappyValley
HBT_LIFETIMESUPPORTER.png
Recipes 
 
May 2009
santa cruz
Posts: 16

I installed my thermowell low in the cooler, and my probe extends about 4" into the mash. Doing 10 gallon batches also. In the past, I had checked the temp of the Mash at the end of the 60 minute rest, and it seemed like 1-2 degrees loss was average. I'm wondering if the steel bulkhead going through the cooler wall is acting as a heat sink and allowing more heat loss?

My beer is generally extremely tasty, but I'm looking for more repeatability and control of the variables. I've read various posts where people have discussed the possibility of overshooting temps using HERMS due to a large thermal mass (HLT water) not responding quickly to temp changes. Is that a common problem? It seems like using low heat on the HLT and insulating the MLT and lines pretty well should prevent the need for large spikes in temperature?

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Herms boss1267 All Grain & Partial Mash Brewing 9 12-13-2009 01:41 AM
My new E-herms. Orangevango Brew Stands 5 06-01-2009 08:08 PM
Cheap & simple HERMS tank skifast1 Brew Stands 8 09-29-2008 10:50 AM
Herms Gabe Equipment/Sanitation 20 01-11-2008 06:23 PM
Herms Biermann General Techniques 6 06-01-2006 01:10 AM


Forum Jump