Originally Posted by Dr Morbius
It would super cool it for a short period of time..best to add salt to wet ice.
Been a while since I posted in this thread, but I'm still tinkering with the "modified vortex design" and super cooling of fog. I did Try rock salt in the ice last year, and it DID have a noticeable effect on the temp in the cooler. I dont have photos, but we ended up with visibally thichker denser fog, and the temperatures we shot with an IR thermometer were lower in the cooler than just plain ice. The only problem we had was with the melting, which needs to happen to super cool the cooler. It ended up melting a bit more than I had hoped and we ended up with a little overflow out the output tube. Which leads me to my "Important Safety Tip for the Day"
If you want to try rock salt to super cool your fog this year, BE CAREFUL NEAR PLANTS. The salty runoff from the cooler as well as some of the salty condensation from the output hose WILL do bad things to plants. If you aren't near plants or grass you should be Ok, but if you want to shoot over a lawn, I'd just stay with plain ice. We beat up a small tree last year and it took the better part of an entire year to get back to normal.
On a more directly related note, as I have more time this year to play, I will be doing some side by site tests of the modified vortex design in a 60Q cooler with a 400w "Wal-Mart" fogger, a 1200W MBT fogger and a 1700W Chauvet fogger. I will also take IR temp readings of the cooler interior temp and the fog temp at output. I'm also planning on doing some testing with a single fogger with and without the ice shelf. All tests will be done side by side and I'll take as many photos as I can. If there is anything that you all would like tested, I'd be more than happy to throw it into the test plan. I'm pretty sure that there is a little more efficiency that can be squeezed out of this design. The biggest help last year for volume for me was adding a garbage bag to the output. I'm interested in testing to see if there is an optimal size for that as well.