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McKenzie Brewing RIMS Brewing
RIMS Tube - the heat source

Many RIMS that I found documented on the web ran a 240V water heater element.  They powered this element with a 110V supply.  This "roughly" quarters its power output.  I also found sites that indicated that this caused problems with maintaining a temperature due to thermal loss, either through the piping or directly through the mash tun.

I wanted to use 240V, this meant using the dryer outlet, but it also meant I still had to reduce the power output of the heater element.  I solved this by running TWO heater elements in series.  I am using two 4500Watt elements, which ends up being about 800Watts a piece once the math is done.  This way, I should have no problem heating the wort to the temperatures I need to mash.  It also means, by using low density water heater elements, I should not be scorching the wort either.

I designed the RIMS unit and had Stainless Design, on Walnut Street in New Albany, Ohio do the work for me again.  Taking a look at the pictures below, you get to see the result!

The unit is powered via Solid State Relays under computer control, the two water heater elements are wired in series.  I can either plug the RIMS Unit directly into a special 240V outlet for heating cleaning solution in circulation, or control it via the SSR's during mashing.

Click on the thumb nails to launch to a large version of the picture.

Picture Description
This is one end of the RIMS Unit.  This shows the 1" coupling piece, welded to 1" tube, with a T piece welded on as well.  The left outlet to the T piece was bored out, to allow insertion of a rubber bung.  This is where the digital thermometer probe is inserted.
Another shot of the RIMS Unit, same end and a bit closer.
The RIMS Unit with the water heater element screwed in place.
The RIMS Unit in place on my shelving, with the Hot Liquour Tank shown on the shelf above it.  By looking closely, you can see that the inlet/outlet ports both have quick disconnects and T pieces to allow insertion of digital thermometers.  I have put rubber "cups" over the ends of the RIMS Unit to protect myself from accidental shock.  I have been bitten by 240V before (a long time ago, not part of this process!), and it really does not feel good!
A close up of the outlet side of the RIMS unit, I had the outlet side down, to allow for better drainage of hot wort and cleaning solutions.  You can clearly see the male quick disconnect and the computer that controls the digital thermometers and Solid State Relays in the back ground.
The pump used to circulate the hot wort and when the mash is done, I use it to transfer the sparged wort into the Boil Kettle.

The pump is a March MDX3, it has all the criteria I need to be used for hot, food grade fluids and I picked it up for $25 on an auction site!

You can see the stainless steel fittings and ball valve, as well as the quick disconnects I attached for making my brewing life easy!

A closeup of the DS1820 on the exit port of the RIMS unit.  I had the T-piece drilled out so that I could insert a #3 drilled stopper, then I insert a stainless tube with one end welded closed.  Then the DS1820 is inserted.
Same as above, just a different angle!
A graph of the performance of the Dual Element RIMS Unit.  This was created by sampling the temperature at the outlet of the RIMS whilst operating.  The MARCH Pump was operating at full capacity and both RIMS Elements were operating.  Performance was 1.7 Degrees increase in temperature per minute of operation.  In 38 minutes the temperature increased by 68 degrees.


McKenzie Brewing is operated by John Fraser, this site should be used as a reference only!  Electricity and water do not mix well and may take your life.  Use at your own risk!

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