What's the general consensus on using a Glycol Jacketed Cold liquor tank versus directly circulating glycol through the second stage of a two stage heat exchanger?
Assuming you use city water first through stage one, to crack down the bulk of the heat, reclaiming that water for your HLT for the next day. But then you have two options for stage two?
It seems like using the CLT allows you to chill the water over 12 hours or so between brew days, so as not to tax your chiller as hard, but what to do with that water? It won't be that hot and I guess you could re capture it in another vessel, pump it back into the CLT and chill it, but it would likely be 80 degrees plus still so require energy to drop it back to 40 degrees or whatever, plus you need another vessel which takes valuable space.
If you use the glycol loop do you run all stop on your other processes? I don't like the sound of that. Or else you need a much larger glycol unit.
Or do people run from the CLT in the first stage set to 55-60 degrees, reclaim that to the HLT and then use the Glycol unit in the second stage? In this scenario maybe the second change in temp isn't as drastic, plus you reclaim all your water. As a bonus you could filter the water into your CLT prior to use so it's both hot and filtered already in your HLT. It would be hard to filter the city water fast enough to knock down the temperature to not stress the Glycol unit, and still get filtered water pre heated into your HLT.
Thoughts, want to get it right the first time, this time.
Assuming you use city water first through stage one, to crack down the bulk of the heat, reclaiming that water for your HLT for the next day. But then you have two options for stage two?
It seems like using the CLT allows you to chill the water over 12 hours or so between brew days, so as not to tax your chiller as hard, but what to do with that water? It won't be that hot and I guess you could re capture it in another vessel, pump it back into the CLT and chill it, but it would likely be 80 degrees plus still so require energy to drop it back to 40 degrees or whatever, plus you need another vessel which takes valuable space.
If you use the glycol loop do you run all stop on your other processes? I don't like the sound of that. Or else you need a much larger glycol unit.
Or do people run from the CLT in the first stage set to 55-60 degrees, reclaim that to the HLT and then use the Glycol unit in the second stage? In this scenario maybe the second change in temp isn't as drastic, plus you reclaim all your water. As a bonus you could filter the water into your CLT prior to use so it's both hot and filtered already in your HLT. It would be hard to filter the city water fast enough to knock down the temperature to not stress the Glycol unit, and still get filtered water pre heated into your HLT.
Thoughts, want to get it right the first time, this time.
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