Originally Posted by rodduley
ChuckO, I was looking at your brewery layout and wondered do you do any recirculation/mixing in your HLT to avoid stratification or does just running it through the RIMs keep the temperature precision? Also when filling the BK during sparge does the run off go through the CFC on the way to the to BK? Seems there would be some liquid remaining in the CFC during boil but would then be sterilized during whirlpool so no concerns with infection, is this correct? Is there a actual "tee" below the MT to divert the flow towards each pump and how much liquid would be remaining in this line. One last question, could you please explain a step by step of how you perform your clean up process. This concept looks like a CIP and requires no hose switching...very interesting.
After I fill the HLT with my sparge water I put an air pump hose over the sight gage and let a small amount of air bubble up through the water. That seems to do sufficient circulation to keep down temperature stratification. When the sparge water gets pumped through the RIMS it cycles a bit to raise the temperature if necessary.
The output from the MLT goes through the CFC on the way to the Boil Kettle and a little does remain in the CFC. I start the pump again during the last 15 minutes of the boil, so it gets mixed into the boiling wort while the pump and CFC get sanitized. As long as there is no cooling water flowing the CFC output gets up to 205 by the time the boil ends. I seem to leave about 6-8 oz. in the tee and manifold while pumping to the BK, but it is at SG 1.010 or so, so it doesn't matter. The wort staying in the lines after the 3 way valve gets recirculated through the BK, so that volume eventually gets lost when I pump from the BK to the fermenter, about 20 oz.
Yes, there is a tee on the output of the MLT which can direct the flow to either pump. The RIMS pump can draw through a 3 way valve from either the HLT or the MLT. The CFC pump can draw through another 3 way valve from either the MLT or the BK. The output of each pump only goes to one item.
I don't do a CIP on the MLT or BK, rather I take them off the stand and dump them elsewhere. I do take the hoses from the outlets of the HLT, MLT and BK and drape them into a plastic bucket along with the output hoses from the RIMS and CFC. I fill the bucket with water and oxiclean and run both pumps and the RIMS heater. This recirculates 3-4 gallons of water through everything but the kettles. I redirect the 3 way valves a couple of times to make certain that everything has been flushed while this is happening. I then repeat 2-3 times with clear water and drain.
A benefit of my piping is that I can hook up a hose from the RIMS output directly to my water source and back flow to fill the HLT and the MLT through the RIMS pump and then flow through the CFC pump for priming both pumps. By playing with the valves I can also back fill the hose between the manifold and the BK outlet.