Quote:
Nov 28, 2017 at 2:40 pm
[COLOR=#000000 !important]I did some pretty good tests this morning, ambient temp 26-29°F, no wind.[/COLOR]
[COLOR=#000000 !important]Although I had intended to run both setups at the same time and do a time-lapse video, it turned out that one of my digital kitchen thermometers was about 5°F off, which made for an annoying discrepancy right out of the gate. So I decided to do it the old-fashioned way and do two well-controlled runs and eliminate as many variables as possible.[/COLOR]
[COLOR=#000000 !important]I was not testing for fuel efficiency, but I made sure the burner had the same amount of fuel in it before starting each run, and lit the burner and let it go for 3 minutes to thoroughly warm up because I noted in some earlier tests that the starting condition of the stove (temperature and amount of fuel) can affect heat output somewhat.[/COLOR]
[COLOR=#000000 !important]Ambient for No-Cozy was 29°F, water 40°F start temp. Cozy ambient 26°F, water 37°F.
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[COLOR=#000000 !important]Conclusions: As I had guessed, there was a slight advantage with the cozy in the heating phase and a definite—although not huge—advantage for the cozy during the cooling phase. Despite starting off with a 3° disadvantage, the pot with cozy “caught up” and achieved a lid-knocking boil in 10:20 compared with 10:09 for the non-cozy pot. After the flame was put out, however, the cozy setup remained 10 degrees warmer than the non-cozy some 12 minutes later. I actually expected perhaps a bigger difference, but it am what it am. ;^)[/COLOR]
Test set-up