I like plots too
I found this one that I though I already deleted. It shows better how the CFC with the outer PVC hose performed:
The in going water was about 78C. 1st I ran it with with free flow 2.5L/min. Without any cooling water the temperature (blue line) drops a couple of degrees.
Next I opened the cooling water tap (12C). The output drop fast to about 16C.
Then I used pump to force the to be cooled water trough the CFC. The flow was about 11.5L/min and out coming water 34C.
I'm looking forward to see how fast I can cool my next patch as I'm using the new whirlpool kettle and this cooler. It should be pretty darn fast cooling for my 5 gal patch. 5 minutes?!!?
The blue line is output. The red one is the input. Others are just there to make the plot harder to read.