Sunday, January 26, 2014

The Stand

    
The stand is finally here!  In all honesty... it's been at the house for a couple of weeks now but I just now have had some free time to unveil it.  It's a little raw you'll see but hopefully you get the idea.

The stand can hold 3 pots with up to a 21" base diameter.  The pots for this build have a 17" base so they'll fit comfortably in between.  Along the back is a piece of steel that will help conceal some of the plumbing and aide in the mounting of the burners.  The front has two brackets where I'll mount the pumps and there's enough room from the bottom rack to the top rack to comfortable store the pots when not in use.

The whole thing is getting a fresh paint job using a primer base and a flat black enamel for the color.  There's been a lot of debate on whether or not to paint it.  The deciding factor came down to the fact that after only two weeks of sitting on my back patio, I had to spend about two hours just sanding all of the surface rust off of this thing.  The paint, I'm hoping, will act as a rust repellent and help keep maintenance down a bit.  The top portion, where the heat will be concentrated, will be painted in high temperature engine paint  after being coated with a special primer.


The whole stand sits on 6 inch casters that are bolted to the stand using flat steel plates that were welded to the frame.  I have to give a big thanks to my friend Mark for doing all of this work.  The welds are perfect, the steel is strong, and this thing is going to make some magnificent beer. 

I'm going to have to change gears a little bit going forward in the next couple of months.  It turns out that attempting to build the stand in the middle of winter in South Dakota poses some challenges. Most notably the fact that we seem to have a blizzard every week.  That being said, the next few updates will focus on the conversion of the kettles. 

I'm also going to start doing some brewing.  It's tiring doing all of this work and I think it's time for a home brew.  Spring is on the way and it's almost time to start thinking of lawnmower beers! Until then, maybe we'll brew up one more big winter beer for this harsh winter season.

Wednesday, January 1, 2014

And the winner is.....

HERMS!  After much debate, I have decided that this will be a HERMS set up.  What is HERMS?  Well, HERMS stands for Heat Exchange Recirculating Mash System.  And what does that mean?  The main premise is that during the mash, the wort will be pumped through some sort of heat exchange coil and recirculated back into the mash tun.  The heat exchange coil is submerged in the hot liquor tank where the water is kept at a specific temperature and as the wort flows through the coil, the water in the HLT keeps the mash at a very accurate temperature.

The other option was a RIMS set up.  RIMS stands for Recirculating Infusion Mash System.  In this system, the wort is pumped out of the mash tun and pumped over a heating element of some sort and then recirculated back into the MT.  There's two ways to accomplish this.  One: run a RIMS coil with a heating element inside of it; or two: use a propane burner under the MT and directly heat the wort and then pump it through a coil so as to keep an even temperature throughout the mash as well as avoid scorching in the MT.

The debate as to which system is better is long and I don't believe a clear winner will ever be declared.  Each basically does the same thing.  They both utilize some form of heat system to keep the wort at a constant temperature in the MT so that full conversion of sugars is accomplished.  They just do it in different ways.  I chose the HERMS set up for three reasons.

The HERMS system allows me to purchase less equipment (and save in cost).  I need one less burner as I won't need one under the mash tun.  I'll use two burners in the whole design, one under the hot liquor tank and one under the boil kettle.  Each burner  costs between $75-$100 after fittings and plumbing so this savings is significant.

The second reason is the energy and propane savings that come with the HERMS set up.  Since I'm heating the water in the HLT for use in the sparge step anyway, why not use this water to help keep the mash temperature accurate as well.  By only firing up one burner instead of two for the mash and sparge, the amount of propane I predict I'll save plays a significant role in my decision making. 

Lastly, I love that I don't have to build a RIMS coil.  I'll use the wort chiller that I already own as my heat exchanger which saves time and money in the build.  As I'm lacking in the technical knowledge area for parts of this build, I really like the idea of minimizing the custom parts in the design.  Since my wort chiller will be out of commission now, the system will most likely use a plate chiller (good thing I saved that $100 on the burners) but that is yet to be decided.

Well there you have it!  What I feel is the biggest decision going into this has been made.  From here it's all building the stand and the rest of the equipment.  I can't wait to fire this thing up when it's ready. Now if only my stand was here...