Single vessel brewing system

I’ve been working on a single vessel brewing system, strongly resembling the one sold be speidel, called braumeister.

Some progress has been made already, and I hope to be able to brew using this system soon.

Short version of what happens in this system: The system consists of two vessels, one 33 liter vessel and another 20 liter vessel with a false bottom.

The larger vessel has heating elements controlled by a PID temperature controller. The smaller vessel sits in the larger and holds grains during mashing. Water is circulated through the grains during mashing to keep temperature even and allow for step mashing. After mashing I remove the vessel and drain it into the larger vessel, where the wort is boiled.

This is my mash tun. It’s a 20 liter plastic bucket and I cut the bottom out of it and put in a fine mesh stainless steel net. During mashing it will hold all the grains, with a pump circulating water through the grains and keeping temperature stable.
This is the inside of my boil kettle. Visible are 2x2200w heating elements, pump inlets and outlets and a pt100 temperature probe. The probe and elements will be connected to a syl-2362 PID controller from auber instruments.
That’s all for now.

2 thoughts on “Single vessel brewing system

  1. Hi

    Did you have any luck with this design. I have brewed in plastic for many years, (using cheap kettle elements as you do), and have a friend who has a Braumeister. I’ve also follwed some of the DIY Braumeister builds on the web, but all have used stainless vessels. I’ve been thinking of trying a version using Plastic vessels so was interested when I saw your one. Did you get this to work.

    Any advice appreciated. Thanks – Richard.

    1. The problem I ran into with the design is not really because of the plastic, but a design issue.
      I designed it so I had a vessel inside another vessel. The smaller one has a perforated/mesh bottom and I constantly pump wort on top of the grain bed in the smaller vessel as I’m mashing. The problem starts soon after you start mashing, because the water level rises in the smaller vessel and falls in the small one as the grain bed compacts. Eventually causing the smaller vessel to overflow into the large one.
      Grain bed compaction is probably why braumeister chose to pump the wort from the bottom of the grain bed up. I would have done that, but then the heating element would be in the we and it’s hard getting a seal between the bottom of the two vessels.

      I solved this issue by getting a false bottom in my kettle, that sits above the heating element. On the false bottom sits a BIAB bag and the pump pumps wort from under the false bottom on top of the grains. It works like a charm with the advantages of the other system, but without any grain compaction issues. You can see a description of my system here:
      http://brew.is/blog/2011/10/20-gallon-boil-kettle-electric-biab-kettle/

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