rkhanso
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- Jan 24, 2017
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Some years ago I made a Counterflow Chiller like the JaDeD Cyclone. Mine worked great, but I made it from used copper pipe, and/or must have left some water in it over the winter. A couple of the short connecting pipes split. It will be too hard to take apart and fix, and considering I made it with used pipe in the first place - should just start over.
Looking at the JaDeD Cyclone, they don't recommend chilling from brew kettle to fermenter due to long chill times. They advertise their chiller as 12' of 1/2" copper pipe and when using it to recirculate 5 gallons, it takes about 8 minutes to chill to 10F above source water temps.
My old chiller had about 20' of 1/2 Copper Pipe wrapped inside 3/4". I also soldered a piece of electrical wire around the outside of the 1/2" pipe thinking (hoping?) that the agitation would increase efficiency. Not sure if that actually helped or not. I had to have very low flow rates to get a 1-pass chilling from around 200F to 70F, so I understand JaDeD's comment about not advising 1-pass chilling.
I brew 10 gallon batches and would really like to do 1-pass chilling if possible. I'm in MN, so our ground water is pretty cool in the summer, and downright cold in the winter. I'm thinking about bumping a new CFC to 30' total, but with the price of copper pipe, want to be as thrifty as possible.
I tried the Microsoft Copilot AI thing and asked it:
I have 10 gallons of wort at 200F. I want to cool it down to 70F within 10 minutes using a counterflow chiller. The counterflow chiller is made of .5" standard type M copper pipe inside .75" standard type M copper pipe for the heat transfer. The wort is pumped through the .5" pipe at 1 gal/min and the 50F cooling water flows at 4 gal/min in the opposite direction through the .75" pipe for the heat transfer. How long does this counterflow chiller need to be to get the 10 gallons of wort from 200F down to 70F in 10 minutes?
It came back with this:
Certainly! Let’s calculate the required length of the counterflow chiller based on the given parameters.
I change the question many times to give me an answer in feet. I also asked to calculate length needed at both 40F and 50F cooling water temp at a flow rate of 3 gal/min and 4 gal/min.
40F at 3GPM = 18.7 long
40F at 4GPM = 17.5' long
50F at 3GPM = 17.5' long
50F at 4GPM = 17.5' long
I certainly may not know the best questions to ask. I know those answers can't be correct (all the same length).
Any thoughts on how many total feet I need to make the chiller?
Looking at the JaDeD Cyclone, they don't recommend chilling from brew kettle to fermenter due to long chill times. They advertise their chiller as 12' of 1/2" copper pipe and when using it to recirculate 5 gallons, it takes about 8 minutes to chill to 10F above source water temps.
My old chiller had about 20' of 1/2 Copper Pipe wrapped inside 3/4". I also soldered a piece of electrical wire around the outside of the 1/2" pipe thinking (hoping?) that the agitation would increase efficiency. Not sure if that actually helped or not. I had to have very low flow rates to get a 1-pass chilling from around 200F to 70F, so I understand JaDeD's comment about not advising 1-pass chilling.
I brew 10 gallon batches and would really like to do 1-pass chilling if possible. I'm in MN, so our ground water is pretty cool in the summer, and downright cold in the winter. I'm thinking about bumping a new CFC to 30' total, but with the price of copper pipe, want to be as thrifty as possible.
I tried the Microsoft Copilot AI thing and asked it:
I have 10 gallons of wort at 200F. I want to cool it down to 70F within 10 minutes using a counterflow chiller. The counterflow chiller is made of .5" standard type M copper pipe inside .75" standard type M copper pipe for the heat transfer. The wort is pumped through the .5" pipe at 1 gal/min and the 50F cooling water flows at 4 gal/min in the opposite direction through the .75" pipe for the heat transfer. How long does this counterflow chiller need to be to get the 10 gallons of wort from 200F down to 70F in 10 minutes?
It came back with this:
Certainly! Let’s calculate the required length of the counterflow chiller based on the given parameters.
- Heat Transfer Rate (Q):We’ll start by calculating the heat transfer rate using the formula:
Q=W⋅C⋅ΔT
Given:- Initial wort temperature = 200°F
- Final wort temperature = 70°F
- Flow rate of wort = 10 gallons per minute
- Specific heat capacity of water (wort) ≈ 1 BTU/lb·°F (approximately)
- Calculate the heat transfer rate (Q):
I change the question many times to give me an answer in feet. I also asked to calculate length needed at both 40F and 50F cooling water temp at a flow rate of 3 gal/min and 4 gal/min.
40F at 3GPM = 18.7 long
40F at 4GPM = 17.5' long
50F at 3GPM = 17.5' long
50F at 4GPM = 17.5' long
I certainly may not know the best questions to ask. I know those answers can't be correct (all the same length).
Any thoughts on how many total feet I need to make the chiller?