My pressure cooker is less than 6 litres (1.5 gals), and it had plenty of steam for both a protein rest and a mash-out. I would guess that you would only need a gallon or so in that pot of yours.
Yes, but just for convenience. If indoors, I use the stovetop with multiple burners. If outside, I have a large propane burner for the boil kettle and a smaller one for the pressure cooker. I suppose you could get by with swapping pots on one burner, but it would be a PITA.
I am by no means an engineer or expert with steam, but wouldn't orienting your steam manifold in a vertical fashion with the vents pointing say at a 45deg angle (instead of straight out) from the side wall of the mash tun introduce a steam pressure induced "stir" of the mash?
I thought of doing this with the pressure cooker setup and my current CPVC drain and sparge manifold. Is there any reasons why I would NOT want to use a combination of steam and CPVC for drain manifold? I envision keeping the outlets for the steam far enough away from the CPVC so that it should not melt. Any suggestions?
Here is my current setup which I recently finished.
I am by no means an engineer or expert with steam, but wouldn't orienting your steam manifold in a vertical fashion with the vents pointing say at a 45deg angle (instead of straight out) from the side wall of the mash tun introduce a steam pressure induced "stir" of the mash?
Steam pressure at the source is only about 10 psi, so no, it isn't enough to stir your mash, unfortunately. The mash is just too thick and heavy for the steam pressure to move it around in the MLT.
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I thought of doing this with the pressure cooker setup and my current CPVC drain and sparge manifold. Is there any reasons why I would NOT want to use a combination of steam and CPVC for drain manifold? I envision keeping the outlets for the steam far enough away from the CPVC so that it should not melt.
I am not sure exactly what you are asking, but I think you are wondering whether you could inject steam through your existing manifold. I suspect the heat might warp it, but even if it didn't, I think the slots on the manifold are too large to maintain any steam pressure, and all the steam would escape through the first few slits it encountered in the mash tun. You need something with smaller holes to restrict the outflow and maintain some pressure so that you get an even release of steam throughout the steam manifold. There are just too many large openings in a CPVC lauter manifold to do this, I would think.
Steam pressure at the source is only about 10 psi, so no, it isn't enough to stir your mash, unfortunately. The mash is just too thick and heavy for the steam pressure to move it around in the MLT.
Yea I thought the thickness of the mash and low pressure would not be enough...wishful thinking. thanks.
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Originally Posted by FlyGuy
I am not sure exactly what you are asking, but I think you are wondering whether you could inject steam through your existing manifold. I suspect the heat might warp it, but even if it didn't, I think the slots on the manifold are too large to maintain any steam pressure, and all the steam would escape through the first few slits it encountered in the mash tun. You need something with smaller holes to restrict the outflow and maintain some pressure so that you get an even release of steam throughout the steam manifold. There are just too many large openings in a CPVC lauter manifold to do this, I would think.
Sorry I wasn't very clear. I was not wanting to use the CPVC to deliver the steam, as I am certain it would not withstand that. I wanted to know if I were able to use a vertically oriented (copper) steam manifold design rather than the circular ring in teh bottom since I already have a CPVC manifold (false bottom). If so, how far should I keep the steam manifold outlets from the CPVC to avoid any potential melting (and certain disaster to my mash).
Edit - another afterthought...how abotu making a ring type steam manifold that you can suspend in the middle (or thereabouts) of the mash with outlets pointing inward in varying directions? That might distribute the steam a little better than a single vertical oriented delivery manifold design.
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The orientation isn't terribly important. The steam condenses as soon as it hits the grist. You have no choice but to stir to distribute the heat. BTW I use about a gallon of water in the pressure cooker to get from mash-in 70F to mash-out 170F
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I was not wanting to use the CPVC to deliver the steam, as I am certain it would not withstand that. I wanted to know if I were able to use a vertically oriented (copper) steam manifold design rather than the circular ring in teh bottom since I already have a CPVC manifold (false bottom). If so, how far should I keep the steam manifold outlets from the CPVC to avoid any potential melting (and certain disaster to my mash).
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