As I understand it, the quicker you cool the syrup the less degrading it has. Packing in 55 gal barrels poses problems cooling them fast, but a cool mist sprayed on the barrel will help some.
This is why some packers use cold water in a trough to help cool the syrup, but even then the water needs to be kept cold.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.